Jobs at Djinni

Senior SharePoint / Microsoft 365 Solutions Architect

26 Lines of Code is looking for a Senior SharePoint / Microsoft 365 Solutions Architect to lead the development of an internal Document Management & E-Signature system.

The goal is to replace external SaaS tools with a secure, fully integrated solution within the Microsoft ecosystem.

Responsibilities

• Design and own the architecture of the document lifecycle: creation → editing → signing → archiving
• Deliver MVP with real-time collaboration and multi-party signing
• Build solutions using SharePoint, Microsoft Graph, SPFx, Power Automate, .NET / C#
• Integrate electronic signature workflows
• Evaluate custom development vs SaaS solutions
• Ensure compliance with ISO 27001 and internal security standards

Requirements

• Strong experience in Microsoft 365 / SharePoint architecture
• Hands-on experience with SPFx, Power Automate, .NET / C#
• Solid knowledge of Microsoft Graph API
• Experience building secure enterprise solutions
• Understanding of document management workflows
• Experience with e-signature integrations
• English — Upper-Intermediate+

Nice to have

• Experience with Word Online co-authoring
• Background in high-security environments

• Experience replacing SaaS tools with custom solutions

   

What to expect from the role

• High-impact internal product
• Ownership of architecture decisions
• Direct collaboration with stakeholders
• Evolving requirements and priorities

🎁 What We Offer:

• Competitive compensation aligned with your expertise and experience.
• A fully remote work environment with flexible hours.
• Opportunities for professional development and career growth.
• The chance to work on innovative projects within a supportive team.

We are looking for a Technical Support Manager to build and lead the support organization from the ground up. You will be the first operations hire — responsible for assembling the team, designing processes, setting up tools, and launching 24/7 support operations. 

You will manage two teams: 

- Technical Operations Engineers — L2-level technical specialists handling platform monitoring, incident response, and API troubleshooting. 

- L1 Support Specialists — first-line support handling triage, basic troubleshooting, and ticket routing.

This is a hands-on leadership role for someone who enjoys building from zero, not just managing what already exists. 

Please note that this is a full-time on-site position in our Lviv office.

Position Requirements

Must have:

• 3-5 years of experience in technical support or IT operations, with at least 1-2 years in a Team Lead or Manager role.
• Hands-on experience building support processes from scratch.
• Experience managing 24/7 shift-based teams — scheduling, rotation, burnout prevention.
• Understanding of incident management frameworks (ITIL, PagerDuty/Opsgenie workflows, SLA design).
• Technical depth sufficient to mentor L2-level engineers: REST API debugging, log analysis, basic SQL, monitoring dashboards.
• Experience hiring and onboarding technical staff across different seniority levels.
• Strong written and verbal communication skills.
• Fluent Ukrainian and English (C1+).

Nice to have:

• iGaming, fintech, or payments industry experience.
• Experience with B2B support models (SLA-driven, operator/client-facing).
• Familiarity with compliance-regulated environments (ISO 27001, PCI DSS).

• ITIL Foundation or similar certification.

  
  Responsibilities

• Build, hire, and lead a team of ~9 people (L1 Support + Technical Operations Engineers).
• Design the full support process: ticket lifecycle, triage rules, escalation matrix, SLA framework.
• Manage 24/7 shift schedules and ensure sustainable rotation for the team.
• Own the incident management process: classification, escalation paths, post-incident reviews.
• Build and maintain a runbook library for consistent incident response.
• Set up support tooling: ticketing system, knowledge base, status page, monitoring dashboards.
• Define and track operational KPIs: First Contact Resolution, MTTA, MTTR, SLA compliance.
• Coordinate with DevOps and Engineering teams on escalations and infrastructure issues.
• Provide regular operational reports to leadership.
  
  We offer
• 25 days off per year + official holidays off
• Military reservist deferment
• English lessons compensation
• Medical compensation
• Professional Development Budget
• Tech Equipment Allowance
• Cozy office and free snacks

• Team Building and Social Events

   

If you’re passionate about creating, breaking boundaries, and shaping the future of digital entertainment — you’re one of us. Join our team of talented professionals where your expertise will be valued, your growth supported, and your contributions recognized. Don’t miss the opportunity to be part of an innovative company with a culture that fosters both personal and professional development.

Send us your resume today and let’s build the future together!

Role description

To ensure the stakeholders of the group of companies (Ukraine, USA) minimize financial risks and operational efficiency. 

Responsibilities

Assess and manage capital structure across jurisdictions and fundraising initiatives;

Manage projects of various types (financial, legal);

Form an accounting policy;

Form budget policy;

Ensure financial analysis and planning, reporting preparation;

Ensure management accounting;

Ensure the implementation of treasury operations;

Manage the development of the accounting/reporting system.

Requirements for candidates

IFRS reporting experience;

Experience in Big4 is preferable;
International tax planning experience;
Cost management skills (ABC costing, life cycle costing, target costing or other);
Performance management tools knowledge (BSC, KPI, OKR or other);
Investment management knowledge(NPV, PBP, ROI or other).

Remote – Full-time – Flexible Hours - Shifted schedule to EST (New York) timezone

About TenViz

TenViz Predictive Analytics builds AI-powered solutions that help Fortune 100 investors anticipate market shifts before they become consensus. We combine financial expertise, mathematical rigor, and AI research to deliver predictive analytics for institutional investors.

Your Expertise

• Strong interest in quantitative and algorithmic approaches
• BSc/MSc in Math, Physics or related field with solid background in statistics, linear algebra and probability theory
• Advanced Linear Algebra, Advanced Statistics, Using Linear Algebra methods in Statistical analysis
• 2+ years in data research, quantitative modeling, ML prototyping, and backtesting
• Skilled in Python, SQL, Git
• Experience with  experiment tracking, pipeline orchestration and workflow automation

Nice to have:

• Bayesian inference, reinforcement learning, or ensemble methods
• Financial econometrics, time-series forecasting, or regime modeling

What You’ll Do

• Design predictive models using probabilistic, ML, and hybrid approaches
• Analyze large-scale financial datasets to detect hidden patterns and early regime shifts
• Prototype and evaluate algorithms, from deep learning to Bayesian models
• Write production-grade research code in Python/SQL that integrates into pipelines
• Translate results into insights and themes investors can act on — not just outputs

Example projects:

• Forecasting inflation via commodity price signals
• Constructing probabilistic forecasts of currency moves around macroeconomic announcements
• Designing a Bayesian model to estimate recession probabilities from yield curve dynamics
• Designing a regime-aware ML pipeline that switches models depending on market conditions
• Creating hybrid ensembles that outperform traditional benchmarks

What’s in It for You

• Remote-first, flexible hours
• Paid vacation & holidays (after 8 months)
• Continuous learning: advanced ML/DL workshops, probabilistic methods, optimization
• Supportive, collaborative team — no micromanagement, focus on trust and creativity
• Work on real financial problems where your models influence billion-dollar decisions

We are looking for a Middle Back-end Node.js Developer to join our team and work on a complex logistics SaaS platform (Rate Management System).

You’ll be working on

• Data-heavy systems
• Pricing and calculation logic
• Complex business workflows

• Scalable backend architecture

   

This is not a typical CRUD project — it involves real business logic, calculations, and system design.

Important
This role is focused specifically on Node.js backend development and core business logic.
Integrations related to AI, OCR, and document parsing are handled by a separate Python-focused role.

Responsibilities

• Develop and maintain backend services using Node.js (TypeScript)
• Design and implement REST APIs
• Work with complex data models (rates, contracts, pricing logic)
• Implement pricing and calculation logic
• Optimize performance for data-heavy operations
• Collaborate with frontend, QA, and PM

• Participate in code reviews and architecture discussions

   

Requirements

• 2+ years of commercial experience with Node.js
• Strong knowledge of TypeScript
• Experience with REST API design
• Experience working with PostgreSQL (or other relational databases)
• Understanding of async programming and performance optimization
• Experience with Docker (basic level is enough)

• Ability to work with structured and complex business logic

   

Nice-to-Haves (but not compulsory)

• Experience with microservices architecture
• Experience building scalable backend services
• Understanding of performance optimization for complex calculations

What We Offer

• Possibility to be a part of startups from around the world
• Supportive, understanding, and flexible management
• Paid vacations and sick leave
• A friendly and welcoming team

About the Team

• The team size is 23 members
• Well-organized development process involving project managers and QA
• Every developer specializes in their area (back-end, front-end)
• Dedicated teams for each project
• The team's internal communication languages are Ukrainian or russian
• Company-sponsored English lessons to support professional growth.

• Please include examples of your code with your application — this will save time for both you and us.
• If you have test results or any test documentation, feel free to share them as well. This will help us evaluate your skills much faster.
• A test task may be assigned before or after the interview.

Our client - Mondu is on a mission to create the world's top B2B payments platform. You will join a team of highly skilled engineers within Mondu's core teams, dedicated to developing new features and essential capabilities for our stakeholders, specifically in credit risk, fraud detection, and operations. Your primary focus will involve working on a microservice architecture with a strong emphasis on backend development. In this role, you'll primarily have opportunities to engage with Go Lang and JavaScript to complement the technology stack. If you thrive on challenges, this role is an excellent excellent fit

About the Role:
We’re looking for a skilled DevOps Engineer to join our team and help build and maintain a reliable, secure, and scalable infrastructure. You'll work closely with developers, data scientists, and security teams to ensure smooth deployment pipelines, strong observability, and robust system operations.

Requirements:

Good English Language Skills

Hands-on experience with Kubernetes (k8s)

Strong knowledge of GCP
Proficient in CI/CD processes and tooling
Experience with observability platforms (e.g., logging, metrics, tracing)
Solid understanding of networking, firewalls, and VPN technologies
Infrastructure as Code expertise with Terraform

Hands-on experience with Claude
General development experience (scripting and automation)

Nice to Have:
Experience with Datadog for observability
Familiarity with the Argo ecosystem (ArgoCD, ArgoWorkflows, ArgoEvents)
Understanding of MLOps practices and tools
Knowledge of Zero Trust Networking principles
Go programming skills
Experience with compliance frameworks such as PCI DSS
Relevant cloud certifications (AWS, GCP, etc.)

Key Responsibilities:
Design, develop, and support internal tooling for engineers
Maintain and optimize CI/CD pipelines for efficient delivery
Manage cloud infrastructure using Terraform (primarily on AWS)
Administer and monitor Kubernetes (k8s) clusters
Ensure comprehensive observability, service monitoring, and alerting
Support and manage system connectivity, including networking, firewalls, and VPNs
Handle access control, permissions, and identity management
Implement and test backup and restoration strategies
Oversee infrastructure security, including security monitoring and vulnerability resolution
Collaborate on development workflows and support automation
Contribute to achieving and maintaining compliance (e.g., PCI DSS)

Social package & benefits:

- Full medical insurance 
- MacBook & accessories
- English lessons
- Accountant assistance
- Minimal bureaucracy, synergy, and formalities, primarily focusing on effective communication

RISK Inc.: An international iGaming company specializing in identifying and fostering the growth of high-potential entertainment markets. With 500+ professionals in 20+ locations, we operate in 10 countries, serving over 300,000 customers.

Always Pushing the Boundaries? You Already Belong at RISK!
 

Our global-scale operations are based on strong internal expertise, analytics, and data research. We have expertise in iGaming operations (sports betting, online casino), digital and affiliate marketing, tech solutions, and data analytics.

We are looking for a Influencer Marketing Manager to join our team.

Job Description:

• Scale FTD and Brand Awareness through systematic influencer marketing across multiple platforms;
• Own the full influencer lifecycle: sourcing, cold outreach, negotiation, launch, and performance control;
• Structure and manage cooperation models (Fixed / CPA / Hybrid) with focus on FTD and ROI;
• Develop integration mechanics and creative formats aligned with player funnel;
• Monitor traffic quality and mitigate risks of low-quality or fraudulent traffic;
• Analyze campaign performance (FTD, CR, Retention, CPA, ROI) and optimize based on data;
• Work with tracking tools to ensure accurate FTD attribution;

• Contribute to influencer strategy and scaling initiatives.

   

Qualifications:

• 2+ years in Influencer Marketing within gambling / betting;
• Proven experience in independent sourcing and selection of influencers (Telegram, Instagram), including cold outreach and contact database management;
• Hands-on experience with Fixed + KPI / CPA / Hybrid models; strong understanding of FTD as core metric;
• Experience with tracking platforms (Keitaro preferred): link setup, UTM management, basic postback validation, FTD attribution control;
• Ability to calculate CPA, CR, ROI and make data-driven decisions;
• Understanding of player funnel, UA market specifics, and traffic quality risks;
• Experience in briefing creatives, developing integration mechanics, testing formats; basic Figma skills are a plus;
• Strong understanding of Telegram and Instagram metrics: audience quality assessment, ER analysis, fraud detection, experience with streaming platforms (twitch/kick) is a plus;
• Advanced Excel / Google Sheets skills: formulas, performance tracking tables, basic influencer financial modeling;

• Ukrainian — fluent; English — Intermediate+.

   

Our Benefit Cafeteria is Packed with Goodies:

• Children Allowance
• Mental Health Support
• Sport Activities
• Language Courses
• Automotive Services
• Veterinary Services
• Home Office Setup Assistance
• Dental Services
• Books and Stationery
• Training Compensation

• And yes, even Massage!

   

The company helps hotel chains like Hilton and Marriott transform front-desk staff into revenue generators through upselling training and analytics. Their IN-Gauge SaaS platform empowers frontline teams across 2,000+ properties in over 100 countries.

- Implement scaling of the case detection process (scanner)
- Split API into multiple API services
- Emulate pubsub/cloud run locally
- Implement scaling of the case detection process (scanner)
- Split API into multiple API services
- Emulate pubsub/cloud run locally
- Extract & process data using PySpark + S3 (Kafka/Kinesis — bonus)
- Write & optimize SQL on PostgreSQL/Redshift; use DynamoDB as data source/sink
- Run and debug ETL jobs on Glue or EMR; monitor via console/Spark UI

Requirements:

• Data engineering - 5 years
• AWS - 3 years (1 year latest project)
• Spark/PySpark - 2 years (1 year latest project)

Ask candidates the following questions:

• How do you use AI tools in your work as a data engineer?
• Can you share specific examples where it improved your efficiency or quality of work?
• What’s your experience with ELT & ETL? 

Important: ability to work in high load environments, we're looking for autonomous and proactive candidates

We are building a full in-house EDI platform to support our logistics and transportation operations. This system will handle EDI document exchange, transformation, validation, and integration with internal systems such as TMS, billing, and analytics. This is not a maintenance role — this is a build-from-scratch system with real architectural impact

Requirements:

• 5 years - C# / .NET
• 3 years - ASP.NET Core
• 2 years - EDI 
• work till 23.00 Kyiv time !!!

Ruby on Rails + Next.js Developer (Remote, Long-Term)

We are looking for a strong and experienced Ruby on Rails + Next.js Developer to join our team for a long-term remote project. If you are passionate about building scalable web applications and enjoy working with modern technologies, we’d love to hear from you.

Responsibilities

• Develop and maintain web applications using Ruby on Rails and Next.js
• Design and implement robust, scalable, and secure backend services
• Build responsive and high-performance frontend interfaces
• Collaborate with cross-functional teams including designers and product managers
• Write clean, maintainable, and well-documented code
• Participate in code reviews and contribute to improving development processes
• Troubleshoot, debug, and optimize application performance

Requirements

• 5+ years of commercial development experience
• Strong expertise in Ruby on Rails
• Solid experience with Next.js and modern frontend development
• Good understanding of RESTful APIs and web architecture
• Experience with relational databases (e.g., PostgreSQL, MySQL)
• Familiarity with version control systems (Git)
• Ability to work independently in a remote environment
• Strong problem-solving and communication skills

Nice to Have

• Experience with cloud platforms (AWS, GCP, or similar)
• Knowledge of Docker and CI/CD pipelines
• Familiarity with testing frameworks (RSpec, Jest, etc.)
• Experience with performance optimization and scaling applications

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.