Jobs at Djinni

Overview
We are looking for a Machine Learning Engineer to design and implement intelligent systems that power personalized digital experiences across connected devices and mobile applications.

This is a hands-on role focused on applied machine learning and data engineering, ideal for someone who thrives at the intersection of ML models, data pipelines, and product integration. You will collaborate closely with backend engineers, data scientists, and product managers to bring ML-driven features into production and continuously optimize them based on real-world usage.

Responsibilities:

• Design, train, and deploy machine learning models for use cases such as personalization, recommendations, and visual analysis;
• Build and maintain scalable, production-grade data pipelines (batch and real-time);
• Collaborate with product and engineering teams to translate product ideas into ML-powered features;
• Implement model observability, monitoring, and retraining workflows;
• Optimize inference performance and model serving in resource-constrained environments (e.g., edge or mobile);
• Contribute to the architecture of a modern ML platform within a cloud-native microservices environment;
• Work with backend teams to expose model outputs via APIs and integrate them into customer-facing experiences;
• Stay up to date with recent ML/AI advancements and evaluate promising methods for future implementation.

Requirements:

• 3+ years of experience in applied machine learning or data science;
• Strong knowledge of:
  • Supervised learning, recommendation systems, or computer vision;
  • Python and ML libraries such as TensorFlow, PyTorch, scikit-learn;
  • Building, deploying, and maintaining ML models in production.
• Familiarity with:
  • MLOps tools (e.g., MLflow, TFX, Airflow, Vertex AI);
  • Data pipelines and messaging systems (e.g., Kafka, BigQuery, dbt);
  • Model serving frameworks (e.g., FastAPI, TensorFlow Serving, TorchServe, ONNX);
• Comfortable collaborating with product, engineering, and analytics teams;
• Experience with cloud platforms (GCP, AWS, or Azure) and container-based deployments;
• Bonus: Experience with edge AI, mobile ML, or video/image processing pipelines.

We power people’s progress.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Meet the team!

This is a high-impact individual contributor role with broad scope. You will operate at the intersection of product, engineering, and business, driving strategy, architecture, and execution for some of the most critical areas of Preply.

At Preply, being a Staff Engineer is about multiplying impact beyond a single team. You don’t just execute, you help define what problems matter, align teams around them, and drive solutions across the organization. You’ll partner closely with engineering and product leadership, shape technical direction, and raise the bar for how we build and scale.

You’ll be joining one of our Product Tribes — Learning or Monetization:

• In Learning, you’ll help build the next generation of AI-powered, personalized learning experiences for millions of users.

• In Monetization, you’ll work on high-impact systems like payments, subscriptions, and bookings — directly influencing revenue, conversion, and the future of how tutors earn on the platform.

   

What you’ll be doing

• Shape technical strategy & drive execution. Partner with Engineering and Product leadership to define and co-own the tribe’s engineering strategy and technical roadmap. Lead end-to-end strategic initiatives, from ideation to delivery, translating product vision into clear technical execution, aligning scope, milestones, and delivering measurable outcomes iteratively.
• Lead architecture & platform evolution. Act as a key architect for the future state of our systems. Evolve core services into a scalable, reliable platform by defining target architectures, driving migrations and deprecations, and ensuring technical excellence across performance, availability, and cost efficiency, always balancing long-term vision with pragmatism.
• Raise engineering excellence & developer experience. Continuously improve how we build. Identify bottlenecks, reduce friction, and drive initiatives that increase team productivity. Champion high engineering standards through RFCs, post-mortems, and quality frameworks (instrumentation, evaluations), ensuring we build the right things in the right way.
• Operate as a multiplier. Extend your impact beyond your own work. Mentor and influence Senior Engineers, Tech Leads, and Engineering Managers, contribute to hiring, and elevate the overall technical bar. Stay hands-on for the most complex and high-impact challenges, leading by example where it matters most.

• Drive technical decision-making. Own critical technical and strategic decisions, including build-vs-buy trade-offs. Lead tooling and vendor evaluations with a clear understanding of total cost of ownership, ensuring decisions align with both technical needs and business goals.

   

What you’ll bring

• Strong Python expertise. Python is a core part of our stack, so we’re looking for someone who is very comfortable designing, building, and reviewing production systems in Python.
• Strong engineering foundations & system thinking. You have a solid background in software engineering and architecture, with experience designing and evolving large-scale systems. You’re able to derive technical strategy from business goals and understand how APIs, services, and data flows translate into real user impact.
• Hands-on, strategic mindset. You connect high-level strategy with execution. You’re comfortable diving into code, building proofs of concept, and iterating quickly with teams to validate ideas.
• End-to-end ownership. You take ownership from ambiguous problem definition through to delivery, launch, and operational stability, with a clear focus on measurable outcomes.
• Ability to influence and align. You’re an excellent communicator, able to articulate technical vision, trade-offs, and business value to engineering, product, and leadership stakeholders. You influence without relying on formal authority and help align multiple teams toward shared goals.
• Product-minded engineering. You approach engineering with a strong product lens - making thoughtful trade-offs and connecting technical decisions to user experience and business impact.
• Comfort operating across domains. You’re able to move fluidly between different types of work - new feature development, system design, architecture evolution, migrations, and process improvements.
• Strong problem-solving and decision-making skills. You’re analytical and creative in your approach, able to explore multiple solutions, evaluate trade-offs, and make pragmatic decisions under uncertainty.
• Driving engineering excellence. You have experience raising the bar across teams — mentoring senior engineers, influencing tech leads, contributing to hiring, and shaping engineering culture through practices like RFCs, post-mortems, and quality frameworks.

• Comfort in evolving environments. You thrive in environments that are changing and growing, and are able to adapt as priorities and context evolve.

   

Why you’ll love it at Preply:

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budget, and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;
• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)
   

Our Principles

• Care to change the world - We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.
• One Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's progress.

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

We power people’s progress.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Meet the team!

Join Preply’s Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired. The Preply Engineering Team provides the tools to help unlock human potential through learning.

Our team builds scalable, resilient applications using the powerful combination of Python/Django on the backend and ReactJS on the frontend — all to deliver an exceptional, seamless experience to our users.

We’re proudly tech-agnostic, meaning we’re open to candidates with a variety of technical backgrounds, whether that’s Java/Spring, Node.js/Express, Ruby on Rails, Scala/Play, PHP, or Golang. While Python is our main language, prior experience with it isn’t required. What matters most is your willingness to learn, your ability to adapt quickly, and your enthusiasm for using Python in product-focused development.

We implement A/B tests to prove the value of our initiatives and improve our product based on data and students' and tutors' feedback. As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best. 

At Preply, we release our product 50-60 times per day by leveraging top-notch CI/CD processes. As a fast-growing company we have diverse technical challenges (sometimes we even write about them on our Engineering Blog) that will allow you to develop your skills at scale. 

What you’ll be doing:

You will work in a cross-functional team alongside the Product Manager, Product Designer, UX Writers, Data Analytics, Technical Leads, Engineers and other cross-functional team members to deliver engaging features through A/B tests and build top-notch products, including, but not limited to:

• Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third-party vendors.
• Think beyond the code and about our customers, understand their needs, and define solutions with the team;
• Balance short-term speed of development with the long-term technical quality of our systems;

• As a Senior Engineer, you will leverage your experience to guide the team in making informed technical decisions, such as continuous improvement of best practices (test culture, code reviews, monitoring and scalability of our tools). 

   

What you need to succeed:

• Exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high-volume data pipelines, efficient algorithms);
• Familiar and willing to support small JS/TS tasks when needed;
• Expertise in troubleshooting issues, identifying the root cause, mitigating it, and setting up safeguards to prevent future issues;
• High level of self-organization, ownership, and responsibility;
• A great collaborator with excellent verbal and written communication skills. Minimum B2 English level;

• Willingness to be on-call for your squad (1 week every 5 weeks).

   

Why you’ll love it at Preply: 

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budget, and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;
• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)

Our Principles

• Care to change the world - We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.

• One Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's progress.

   

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

Project Description

Development of a portable, high-fidelity audio device integrated with AI assistant capabilities. The project focuses on creating a high-performance consumer electronics product with a focus on quality sound and battery efficiency.

What will you do

• Developing circuitry solutions and PCBs for battery-powered wearable device;
• Developing schematic diagrams according to technical specifications and routing 4+ layer boards accordingly;
• Writing technical documentation for the developed devices (documentation for manufacturing, assembly, testing, manuals, etc.);
• Providing technical consultation during the testing phase and introduction to production;
• Providing technical support during the mass production phase (in case issues are identified);
• Designing PCBs to fit within ready-made enclosures;
• Selecting optimal components during PCB development;
• Adhering to standards and regulations during the design process;
• English Proficiency: Upper-Intermediate (B2). Ability to conduct technical discussions, participate in meetings, and write professional documentation/emails for international clients.

We Expect You Are

• Self-Driven & Autonomous: A proactive problem-solver who can navigate hardware documentation and drive tasks to completion independently.
• Result-Oriented: Focused on delivering high-quality end products that align with business goals and reach the "Done" state.
• A Strong Communicator: Able to articulate complex technical concepts clearly to both technical and non-technical stakeholders.
• Flexible: Ready to quickly adjust to changing requirements, new technology stacks, or shifting project priorities.
• Value-Driven: A contributor who looks beyond "just coding" to propose architectural improvements and process optimizations.
• A Collaborative Team Player: Committed to knowledge sharing, active participation in code reviews, and supporting colleagues.

What You Need For This Position

• Degree in a relevant technical field;
• Experience with and confident proficiency in Altium;
• Understanding of and experience with electronics - calculating and simulating circuits (analog and digital);
• Experience in routing 4-6 layer printed circuit boards (PCBs) and bringing them to mass production;
• Experience with "dense/miniature" designs (e.g., smartwatches, wearables, SoM carriers);
• Experience designing and routing rigid-flex printed circuit boards (PCBs);
• Experience working with RF (radio frequency) circuits and high-frequency signals;
• Experience designing devices with consideration for certification requirements (LVD, EMC);
• Experience in preparing documentation for PCB manufacturing and assembly;
  English Proficiency: Upper-Intermediate (B2). Ability to conduct technical discussions, participate in meetings, and write professional documentation/emails for international clients.
  
  What We Offer For Your Success
• Zero bureaucracy and no time tracking;
• 20 working days paid vacation and 15 days of sick leave;
• Additional days of leave for important events of life;
• Flexible working hours (start your day between 8:00 and 11:00);
• Professional English courses in small groups by level;
• Education and anniversary bonuses;
• Providing all the necessary equipment;
• Full accounting support for the employees;
• The opportunity to rotate on projects to learn new technologies;
• Work from a modern office in the historical part of Kyiv (Podil) with convenient transport links;
• Office with autonomous power systems, uninterrupted Internet connection, coffee, tea, and snacks.
   

Hiring Process

• Stage 1: Prescreen Interview (20 min);
• Stage 2: Interview with HR (40-60 min.);
• Stage 3: Technical Interview (60-80 min).

We power people’s progress.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Meet the team!

Join Preply’s Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired. The Preply Engineering Team provides the tools to help unlock human potential through learning.

Our team builds scalable, resilient applications using the powerful combination of Python/Django on the backend and ReactJS on the frontend — all to deliver an exceptional, seamless experience to our users.

We’re proudly tech-agnostic, meaning we’re open to candidates with a variety of technical backgrounds, whether that’s Java/Spring, Node.js/Express, Ruby on Rails, Scala/Play, PHP, or Golang. While Python is our main language, prior experience with it isn’t required. What matters most is your willingness to learn, your ability to adapt quickly, and your enthusiasm for using Python in product-focused development.

We implement A/B tests to prove the value of our initiatives and improve our product based on data and students' and tutors' feedback. As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best. 

At Preply, we release our product 50-60 times per day by leveraging top-notch CI/CD processes. As a fast-growing company we have diverse technical challenges (sometimes we even write about them on our Engineering Blog) that will allow you to develop your skills at scale. 

What you’ll be doing:

You will work in a cross-functional team alongside the Product Manager, Product Designer, UX Writers, Data Analytics, Technical Leads, Engineers and other cross-functional team members to deliver engaging features through A/B tests and build top-notch products, including, but not limited to:

• Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third-party vendors.
• Think beyond the code and about our customers, understand their needs, and define solutions with the team;
• Balance short-term speed of development with the long-term technical quality of our systems;

• As a Senior Engineer, you will leverage your experience to guide the team in making informed technical decisions, such as continuous improvement of best practices (test culture, code reviews, monitoring and scalability of our tools). 

   

What you need to succeed:

• Exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high-volume data pipelines, efficient algorithms);
• Familiar and willing to support small JS/TS tasks when needed;
• Expertise in troubleshooting issues, identifying the root cause, mitigating it, and setting up safeguards to prevent future issues;
• High level of self-organization, ownership, and responsibility;
• A great collaborator with excellent verbal and written communication skills. Minimum B2 English level;

• Willingness to be on-call for your squad (1 week every 5 weeks).

   

Why you’ll love it at Preply: 

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budget, and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;
• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)

Our Principles

• Care to change the world - We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.

• One Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's progress.

   

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

We power people’s progress.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Meet the team!

Join Preply’s Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired. The Preply Engineering Team provides the tools to help unlock human potential through learning.

Our team builds scalable, resilient applications using the powerful combination of Python/Django on the backend and ReactJS on the frontend — all to deliver an exceptional, seamless experience to our users.

We’re proudly tech-agnostic, meaning we’re open to candidates with a variety of technical backgrounds, whether that’s Java/Spring, Node.js/Express, Ruby on Rails, Scala/Play, PHP, or Golang. While Python is our main language, prior experience with it isn’t required. What matters most is your willingness to learn, your ability to adapt quickly, and your enthusiasm for using Python in product-focused development.

We implement A/B tests to prove the value of our initiatives and improve our product based on data and students' and tutors' feedback. As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best. 

At Preply, we release our product 50-60 times per day by leveraging top-notch CI/CD processes. As a fast-growing company we have diverse technical challenges (sometimes we even write about them on our Engineering Blog) that will allow you to develop your skills at scale. 

What you’ll be doing:

You will work in a cross-functional team alongside the Product Manager, Product Designer, UX Writers, Data Analytics, Technical Leads, Engineers and other cross-functional team members to deliver engaging features through A/B tests and build top-notch products, including, but not limited to:

• Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third-party vendors.
• Think beyond the code and about our customers, understand their needs, and define solutions with the team;
• Balance short-term speed of development with the long-term technical quality of our systems;

• As a Senior Engineer, you will leverage your experience to guide the team in making informed technical decisions, such as continuous improvement of best practices (test culture, code reviews, monitoring and scalability of our tools). 

   

What you need to succeed:

• Exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high-volume data pipelines, efficient algorithms);
• Familiar and willing to support small JS/TS tasks when needed;
• Expertise in troubleshooting issues, identifying the root cause, mitigating it, and setting up safeguards to prevent future issues;
• High level of self-organization, ownership, and responsibility;
• A great collaborator with excellent verbal and written communication skills. Minimum B2 English level;

• Willingness to be on-call for your squad (1 week every 5 weeks).

   

Why you’ll love it at Preply: 

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budget, and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;
• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)

Our Principles

• Care to change the world - We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.

• One Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's progress.

   

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

We power people’s progress.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Meet the team!

Join Preply’s Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired. The Preply Engineering Team provides the tools to help unlock human potential through learning.

Our team builds scalable, resilient applications using the powerful combination of Python/Django on the backend and ReactJS on the frontend — all to deliver an exceptional, seamless experience to our users.

We’re proudly tech-agnostic, meaning we’re open to candidates with a variety of technical backgrounds, whether that’s Java/Spring, Node.js/Express, Ruby on Rails, Scala/Play, PHP, or Golang. While Python is our main language, prior experience with it isn’t required. What matters most is your willingness to learn, your ability to adapt quickly, and your enthusiasm for using Python in product-focused development.

We implement A/B tests to prove the value of our initiatives and improve our product based on data and students' and tutors' feedback. As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best. 

At Preply, we release our product 50-60 times per day by leveraging top-notch CI/CD processes. As a fast-growing company we have diverse technical challenges (sometimes we even write about them on our Engineering Blog) that will allow you to develop your skills at scale. 

What you’ll be doing:

You will work in a cross-functional team alongside the Product Manager, Product Designer, UX Writers, Data Analytics, Technical Leads, Engineers and other cross-functional team members to deliver engaging features through A/B tests and build top-notch products, including, but not limited to:

• Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third-party vendors.
• Think beyond the code and about our customers, understand their needs, and define solutions with the team;
• Balance short-term speed of development with the long-term technical quality of our systems;

• As a Senior Engineer, you will leverage your experience to guide the team in making informed technical decisions, such as continuous improvement of best practices (test culture, code reviews, monitoring and scalability of our tools). 

   

What you need to succeed:

• Exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high-volume data pipelines, efficient algorithms);
• Familiar and willing to support small JS/TS tasks when needed;
• Expertise in troubleshooting issues, identifying the root cause, mitigating it, and setting up safeguards to prevent future issues;
• High level of self-organization, ownership, and responsibility;
• A great collaborator with excellent verbal and written communication skills. Minimum B2 English level;

• Willingness to be on-call for your squad (1 week every 5 weeks).

   

Why you’ll love it at Preply: 

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budget, and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;
• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)

Our Principles

• Care to change the world - We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.

• One Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's progress.

   

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

🚀 Join RiskSeal as a TechOps for our platform!

We are looking for a Middle+ TechOps Engineer to oversee the smooth operation of our data collection and processing pipelines. The ideal candidate will have experience managing large-scale automated data gathering systems, ensuring seamless deployments, and maintaining system efficiency across a complex microservices environment.This is a remote position.

Responsibilities

• RiskSeal data collection platform support & maintenance
• Configuration of new environment s, clients, data sources
• Troubleshoot data harvesting issues
• Optimize system performance & minimize downtime of data collection algorithms
• Monitoring the state of integrations of data collection
• Take part in production deployments ensuring continuous operation and no customer impact.

Requirements

• 2+ years of experience in a technical support or engineering role in a data-intensive environment.
• Experience working with automation tools, web data collection workflows.
• Experience working with databases such as MySQL, ClickHouse, etc.
• Experience with monitoring and logging tools such as Grafana, LogChef, or similar.
• Strong problem-solving skills and ability to troubleshoot operational bottlenecks.
• Ability to collaborate with cross-functional teams, including developers and DevOps engineers.

What We Offer

• A high-impact role in a fast-growing fintech startup.
• The opportunity to optimize and scale an advanced data collection system.
• A flexible remote work environment with a focus on results.
• Competitive salary and benefits package.

• A chance to work with a team of passionate professionals in a rapidly evolving space.

   

📩 Ready to Join?
Send your resume, and let’s achieve great results together! 

Hi! We are Liven. We develop a global ecosystem of products that help people gain self-observability and steer away from negative thoughts, patterns, and behaviors on their personal journey.

Inside our ecosystem:

— Self-discovery companion — an app that helps 2.5M users build a deeper relationship with themselves. It’s a space for self-exploration through AI coaching, mood trackers, sound practices, and bite-sized learning.
— Online Coaching — sessions with certified experts to navigate complex life situations.
— Supplements — for physical recovery and bodily support.

Liven is a company for the curious. We are driven by curiosity — an inner need to ask questions, dig deeper, and never stop in the face of the unknown. We are passionate about creating products and solutions that truly help. Our entire culture of experimentation exists to find better ways to support and guide people on their self-discovery journey.
 

We are looking for a People Partner. In the role of People Partner at Liven, you’ll be shaping our culture, supporting team growth, and contributing to building a product that truly transforms people’s lives.
 

🎯 How Will You Make An Impact?

— Close collaboration and coaching of team leaders: supporting the development of people management skills, guiding them through complex people situations, fostering a continuous feedback culture;
— Building a system for employee development, retention, and succession planning;
— Contributing to the optimization and improvement of the company’s organizational structure to support scaling and increase cross-team efficiency;
— Supporting and scaling all employee lifecycle processes in line with the growth of Product & Engineering teams (onboarding, performance review, career development, etc.);
— Strengthening company culture and team climate during rapid growth;
— Supporting well-being and mental health initiatives in collaboration with an external provider;
— Using people data (HR analytics) to make evidence-based recommendations and decisions for the business.
 

🧩 What Makes You a Perfect Fit?

— 3+ years of experience as a People/Talent Partner or HR Specialist (preferably with product or technical teams);
— Strong understanding of employee lifecycle processes and hands-on experience scaling them;
— Experience working with various HRMS systems (HiBob, PeopleForce, etc.);
— Excellent communication skills: you can negotiate, express your thoughts clearly, build win-win solutions, use feedback as a tool, and manage communications across teams and working groups;
— Results-oriented: able to set priorities, track progress, find resources, ask the right questions (“what problem are we solving?”), and meet deadlines;
— English: Intermediate / Upper-Intermediate;
— A proactive and initiative-driven mindset: you take ownership, bring new ideas, and experiment to achieve faster and higher-quality results;
 

🌱 Even Better If You:

— Have experience facilitating team sessions or workshops (especially for product and technical leaders);
— Have experience organizing team events that strengthen culture and engagement;
— Have knowledge of or interest in people analytics (collecting and interpreting HR metrics);
— Have experience supporting well-being / mental health programs;
— Have a good sense of humor 😊
 

💪🏻What will you enjoy most about being at Liven?

— Culture of Curiosity: a place for explorers who embrace the unknown and achieve stellar results even when there’s no playbook;
— Growth through Impact: your professional evolution is directly tied to the value you bring to the product and the business;
— Global Impact: develop a product that supports the mental well-being of millions of users worldwide every day;
— Trust and Ownership: the freedom to act, coupled with high responsibility for the outcome;
— Expert Community: access to professional clubs, specialized training, a knowledge base, and a library for your continuous learning;
— Space for Focus: autonomous offices in Kyiv and Warsaw with breakfasts, lunches, lounge areas, walking pads, and massage chairs;
— Sports Community: a running club, yoga, boxing, rock climbing, and functional training to keep you energized;
— Medical Insurance and a stable social package;
— Well-being Program: We care about the mental health of our team as much as we care about our users;
— Support during the war: we provide conditions for stable work and contribute to Ukraine’s recovery together.
 

Still on Day 1: A Constant Expedition

We’ve reached a scale we’re proud of, but inside, we keep the “Day 1” spirit — constantly asking questions, testing hypotheses, and adapting to new contexts. If you are driven by new challenges and want to empower the team with your vision, let’s connect.

Fuel your curiosity at Liven 🔎

We are looking for a proactive and enthusiastic Junior Digital Marketing Specialist with experience to join our team. This is an excellent opportunity for someone passionate about marketing, eager to learn, and ready to contribute to impactful projects.

About the project:
Join Epicstaff — our open-source startup building a platform for creating AI agents with a visual UI and modular backend. Check it out github.com/EpicStaff and make sure you understand what it’s about. If it clicks with you — welcome aboard, and let’s build something great together.

No micromanagement. Just clear goals, smart teammates, and your chance to make a real impact on a real product.

Our selection process includes:
— HR interview;
— Test Task;
— Tech interview;
— Final interview with the founders of the company.

Requirements:
— 6+ months of experience as a Marketing Specialist, SMM manager, or related position;
— Understanding of digital marketing principles and practices, with familiarity with digital tools and social media platforms (e.g., LinkedIn, Reddit, Facebook, YouTube);
— Experience with SMM strategies and influencer collaborations;
— Are interested in tech and excited about the potential of AI in marketing;
— Understanding of business challenges with a practical, mature approach;
— Follow digital trends and enjoy exploring new tools and innovations;
— Strong written and verbal communication skills in English (Upper-Intermediate level or higher).
 

Responsibilities:

— Working on social media content creation and scheduling;
— Researching digital trends, competitors, and target audiences;
— Contributing to the planning and execution of marketing campaigns;
— Analyzing campaign performance and preparing reports;
— Participating in team brainstorms and idea development.
 

We Offer:

— Schedule: Monday–Friday, (10.00−19.00 or 9:00-18.00);
— Work format: office/remote/hybrid;
— Medical insurance;
— Corporate equipment;
— No time trackers or unnecessary bureaucracy;
— Supportive and collaborative team culture;
— Paid vacation and sick leave;
— Gifts for birthdays and professional holidays;
— Freedom to test ideas, lead initiatives, and try something new;
— Communication with experienced professionals eager to share their expertise;
— Participation in internal and external events, with opportunities to grow your brand.

We work with startups and established companies to create products in healthcare, fintech, eCommerce, and AI. This role offers real variety — new domains, evolving challenges, and steady professional growth instead of being locked into a single legacy system.

If you’re motivated by fast learning and building features that go live, this might be the right place for you.
 

What You'll Do

• Design and implement scalable backend solutions and contribute to architecture decisions
• Own features end-to-end — from technical discussion to production deployment
• Work closely with the client’s team on project tasks in English
• Optimize performance and improve existing systems
• Take responsibility for production stability and code quality

What We Work With

⚡ Python, FastAPI, Django, Pydantic, PostgreSQL, uv, Ruff

Gets You Extra Points

• Confident communication skills for requirement clarification
• Familiar with SQLModel, Alembic
• Used AI coding tools (Cursor, Claude Code) in daily workflow
• Practical experience working with AI/LLM integrations in real projects
• Experience working on production-ready applications
• Experience with full-stack development using React

What You Bring

• 1+ years of commercial backend development experience
• Strong knowledge of Python
• Solid understanding of REST APIs
• Experience working with SQL databases
• Ability to work independently and take ownership
• English: Upper-Intermediate (B2+) or higher — confident spoken and written communication with clients

What You Get

Work & Growth:

• Fully remote, flexible hours
• Structured code reviews
• Senior engineers who help you level up
• English practice sessions

Compensation:

• Salary in USD
• Performance reviews twice a year
• 15 days paid vacation + sick leave

We power people’s progress.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled — and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries — and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Meet the team!

Join Preply’s Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired.

The Preply Engineering Team provides the tools to help unlock human potential through learning. We implement A/B tests to prove the value of our initiatives and improve our product based on data and students’ and tutors’ feedback. As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best.

As a Senior II Backend Engineer, you’ll set the technical direction, lead cross-functional projects, and build systems that power Preply’s global growth engine. Your work will shape how millions of learners connect with tutors worldwide, tackling challenges that are complex in scope and critical to our success.

We are tech-agnostic, meaning we are open to considering candidates with diverse technology backgrounds, such as Java/Spring, Node.js/Express.js, Ruby/Ruby on Rails, Scala/Play, PHP, or Golang.

While Python is our primary programming language, prior experience with it is not mandatory. What truly matters is your enthusiasm for learning Python and your ability to adapt quickly to using it for product development.

What you’ll be doing

• Own and drive technical vision across squads
• Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third-party vendors.
• Scope and lead cross-functional initiatives involving design, data, product, security, and other engineering teams.
• Design and implement scalable backend systems, data pipelines, and integrations with third-party platforms
• Mentor and coach junior and middle engineers across squads
• Improve performance, tracking, monitoring, and reliability of our systems with an eye on long-term scalability.
• Collaborate closely with PMs, EMs, designers, and analysts to make data-informed, user-centered decisions.

• Champion engineering best practices: test automation, documentation, observability, and quality-first culture.

   

What you need to succeed

• Exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high-volume data pipelines, efficient algorithms);
• Proven experience leading complex, ambiguous, or greenfield projects end-to-end
• Strong communication and cross-functional collaboration skills (English level B2+)

• Willingness to be on-call for your squad (1 week every 5 weeks).

   

Nice to have

• Side projects or product ownership experience.
• Experience designing systems for marketing attribution, experimentation platforms, or recommendation engines.
• Familiarity with cloud platforms (AWS/GCP) and modern DevOps practices.
• Familiarity and willing to support small JS/TS tasks when needed.

Why you’ll love it at Preply

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budge,t and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;

• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)

   

Our Principles

• Care to change the world — We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners — For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting — To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time — In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution — What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep — We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset — We proactively seek growth opportunities and believe today’s best performance becomes tomorrow’s starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar — We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit — We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.

• One Preply — We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other’s progress.

   

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

We power people’s progress.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled — and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries — and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Meet the team!

Join Preply’s Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired.

The Preply Engineering Team provides the tools to help unlock human potential through learning. We implement A/B tests to prove the value of our initiatives and improve our product based on data and students’ and tutors’ feedback. As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best.

As a Senior II Backend Engineer, you’ll set the technical direction, lead cross-functional projects, and build systems that power Preply’s global growth engine. Your work will shape how millions of learners connect with tutors worldwide, tackling challenges that are complex in scope and critical to our success.

We are tech-agnostic, meaning we are open to considering candidates with diverse technology backgrounds, such as Java/Spring, Node.js/Express.js, Ruby/Ruby on Rails, Scala/Play, PHP, or Golang.

While Python is our primary programming language, prior experience with it is not mandatory. What truly matters is your enthusiasm for learning Python and your ability to adapt quickly to using it for product development.

What you’ll be doing

• Own and drive technical vision across squads
• Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third-party vendors.
• Scope and lead cross-functional initiatives involving design, data, product, security, and other engineering teams.
• Design and implement scalable backend systems, data pipelines, and integrations with third-party platforms
• Mentor and coach junior and middle engineers across squads
• Improve performance, tracking, monitoring, and reliability of our systems with an eye on long-term scalability.
• Collaborate closely with PMs, EMs, designers, and analysts to make data-informed, user-centered decisions.

• Champion engineering best practices: test automation, documentation, observability, and quality-first culture.

   

What you need to succeed

• Exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high-volume data pipelines, efficient algorithms);
• Proven experience leading complex, ambiguous, or greenfield projects end-to-end
• Strong communication and cross-functional collaboration skills (English level B2+)

• Willingness to be on-call for your squad (1 week every 5 weeks).

   

Nice to have

• Side projects or product ownership experience.
• Experience designing systems for marketing attribution, experimentation platforms, or recommendation engines.
• Familiarity with cloud platforms (AWS/GCP) and modern DevOps practices.
• Familiarity and willing to support small JS/TS tasks when needed.

Why you’ll love it at Preply

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budge,t and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;

• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)

   

Our Principles

• Care to change the world — We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners — For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting — To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time — In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution — What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep — We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset — We proactively seek growth opportunities and believe today’s best performance becomes tomorrow’s starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar — We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit — We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.

• One Preply — We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other’s progress.

   

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

We power people’s progress.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled — and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries — and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Meet the team!

Join Preply’s Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired.

The Preply Engineering Team provides the tools to help unlock human potential through learning. We implement A/B tests to prove the value of our initiatives and improve our product based on data and students’ and tutors’ feedback. As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best.

As a Senior II Backend Engineer, you’ll set the technical direction, lead cross-functional projects, and build systems that power Preply’s global growth engine. Your work will shape how millions of learners connect with tutors worldwide, tackling challenges that are complex in scope and critical to our success.

We are tech-agnostic, meaning we are open to considering candidates with diverse technology backgrounds, such as Java/Spring, Node.js/Express.js, Ruby/Ruby on Rails, Scala/Play, PHP, or Golang.

While Python is our primary programming language, prior experience with it is not mandatory. What truly matters is your enthusiasm for learning Python and your ability to adapt quickly to using it for product development.

What you’ll be doing

• Own and drive technical vision across squads
• Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third-party vendors.
• Scope and lead cross-functional initiatives involving design, data, product, security, and other engineering teams.
• Design and implement scalable backend systems, data pipelines, and integrations with third-party platforms
• Mentor and coach junior and middle engineers across squads
• Improve performance, tracking, monitoring, and reliability of our systems with an eye on long-term scalability.
• Collaborate closely with PMs, EMs, designers, and analysts to make data-informed, user-centered decisions.

• Champion engineering best practices: test automation, documentation, observability, and quality-first culture.

   

What you need to succeed

• Exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high-volume data pipelines, efficient algorithms);
• Proven experience leading complex, ambiguous, or greenfield projects end-to-end
• Strong communication and cross-functional collaboration skills (English level B2+)

• Willingness to be on-call for your squad (1 week every 5 weeks).

   

Nice to have

• Side projects or product ownership experience.
• Experience designing systems for marketing attribution, experimentation platforms, or recommendation engines.
• Familiarity with cloud platforms (AWS/GCP) and modern DevOps practices.
• Familiarity and willing to support small JS/TS tasks when needed.

Why you’ll love it at Preply

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budge,t and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;

• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)

   

Our Principles

• Care to change the world — We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners — For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting — To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time — In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution — What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep — We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset — We proactively seek growth opportunities and believe today’s best performance becomes tomorrow’s starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar — We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit — We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.

• One Preply — We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other’s progress.

   

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

We power people’s progress.

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled — and it’s creating real impact.

We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries — and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.

Meet the team!

Join Preply’s Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired.

The Preply Engineering Team provides the tools to help unlock human potential through learning. We implement A/B tests to prove the value of our initiatives and improve our product based on data and students’ and tutors’ feedback. As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best.

As a Senior II Backend Engineer, you’ll set the technical direction, lead cross-functional projects, and build systems that power Preply’s global growth engine. Your work will shape how millions of learners connect with tutors worldwide, tackling challenges that are complex in scope and critical to our success.

We are tech-agnostic, meaning we are open to considering candidates with diverse technology backgrounds, such as Java/Spring, Node.js/Express.js, Ruby/Ruby on Rails, Scala/Play, PHP, or Golang.

While Python is our primary programming language, prior experience with it is not mandatory. What truly matters is your enthusiasm for learning Python and your ability to adapt quickly to using it for product development.

What you’ll be doing

• Own and drive technical vision across squads
• Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third-party vendors.
• Scope and lead cross-functional initiatives involving design, data, product, security, and other engineering teams.
• Design and implement scalable backend systems, data pipelines, and integrations with third-party platforms
• Mentor and coach junior and middle engineers across squads
• Improve performance, tracking, monitoring, and reliability of our systems with an eye on long-term scalability.
• Collaborate closely with PMs, EMs, designers, and analysts to make data-informed, user-centered decisions.

• Champion engineering best practices: test automation, documentation, observability, and quality-first culture.

   

What you need to succeed

• Exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high-volume data pipelines, efficient algorithms);
• Proven experience leading complex, ambiguous, or greenfield projects end-to-end
• Strong communication and cross-functional collaboration skills (English level B2+)

• Willingness to be on-call for your squad (1 week every 5 weeks).

   

Nice to have

• Side projects or product ownership experience.
• Experience designing systems for marketing attribution, experimentation platforms, or recommendation engines.
• Familiarity with cloud platforms (AWS/GCP) and modern DevOps practices.
• Familiarity and willing to support small JS/TS tasks when needed.

Why you’ll love it at Preply

• An open, collaborative, dynamic, and diverse culture;
• A generous monthly allowance for lessons on Preply.com, Learning & Development budge,t and time off for your self-development;
• A competitive financial package with equity, leave allowance, and health insurance;
• Access to free mental health support platforms;

• The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)

   

Our Principles

• Care to change the world — We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners — For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting — To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time — In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.
• Disciplined execution — What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep — We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset — We proactively seek growth opportunities and believe today’s best performance becomes tomorrow’s starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar — We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit — We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.

• One Preply — We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other’s progress.

   

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.