Jobs Ukraine

Senior Computer Vision Engineer

About Us

We are a technology company with roots in algorithmic trading, where we built real-time systems that process massive, noisy data streams with zero tolerance for delay.
We are now applying this engineering DNA to a new MilTech division — an AI battlefield intelligence platform, from petabyte-scale video annotation to real-time inference on custom hardware at command posts.
We have exclusive data partnerships with frontline Ukrainian military units, an operational annotation pipeline with active learning and a trained detection model (v1).
The infrastructure is built and the data is flowing — we need experienced CV engineers to push the models forward.

The Role

We are looking for a Senior CV Engineer to join the ML team and focus on developing, training, and optimizing computer vision and vision-language models for battlefield target detection, classification, and contextual intelligence.

What You Will Do

Model Development & Training
- Train and iterate on detection, classification, tracking, and segmentation models on real combat footage
- Experiment with vision-language models (VLMs) for scene understanding and contextual reasoning
- Run distributed multi-GPU training experiments and manage the experiment lifecycle
- Improve model accuracy through architecture selection, hyperparameter tuning, data augmentation, and training strategy
- Contribute to the active learning loop: analyze confidence distributions, refine auto-labeling thresholds, identify hard cases for human review

Battlefield Contextual Intelligence
- Develop area-level temporal analysis: change detection across sequential overflights, environmental cue recognition
- Build sequence-aware model architectures (temporal attention, video transformers) for multi-frame reasoning
- Collaborate with military subject-matter experts to encode operator knowledge into model features and evaluation criteria

Model Optimization & Deployment
- Quantize and optimize models for deployment on custom AIPU inference hardware (INT8, mixed-precision, quantization-aware training)
- Validate that optimized models meet accuracy targets against gold-set benchmarks
- Support multi-stream inference validation at command post scale (100+ concurrent streams per rack)

Data & Annotation Quality
- Work with the annotation team to refine the labeling ontology and quality control criteria
- Analyze model errors to identify gaps in training data and drive targeted data collection
- Evaluate dataset diversity and coverage using embedding-based curation tools

What We Are Looking For

Must Have
- 4+ years in computer vision and deep learning, with production model deployments
- Strong PyTorch proficiency, including distributed training (DDP/FSDP)
- Hands-on experience with object detection pipelines (YOLO family, RT-DETR, or similar)
- Model optimization experience: quantization, pruning, or export to inference runtimes (ONNX, TensorRT, or similar)
- Solid understanding of training methodology: experiment design, ablation studies, metrics analysis
- Python as primary language; clean, production-grade code

Strong Plus
- Experience with vision-language models (CLIP, Florence, PaliGemma, or similar)
- Video understanding or temporal model architectures
- UAV / drone / robotics domain experience
- MilTech or defense-related work
- Change detection or remote sensing experience
- Experience with active learning or data-centric ML workflows
- C++ for performance-critical components

Tech Stack

- Training: PyTorch, distributed training (DDP/FSDP)
- Data processing: Ray Data
- Data curation: FiftyOne, embedding-based selection
- Annotation: CVAT with pre-annotation and active learning
- Experiment tracking: MLflow
- Inference: Custom AIPU hardware (model export via ONNX + quantization)
- Infrastructure: Kubernetes, on-prem GPU cluster (NVIDIA L40S)
- Storage: S3-compatible object storage (Ceph)

What We Offer

- A role focused on what you do best — building and improving CV models, not setting up infrastructure
- Real combat footage dataset — petabyte-scale, operationally relevant, impossible to replicate
- Dedicated on-prem GPU resources — no cloud queues or budget negotiations for compute
- Direct collaboration with military operators whose domain expertise shapes the models
- Competitive salary
- Stock options
 

As an Embedded Video Engineer, you will contribute to the development of advanced video transmission solutions used in high-tech and mission-critical products. You will design and optimize end-to-end video pipelines — from camera sensor to final playback — ensuring the best possible balance between quality, latency, and bandwidth.

This is an opportunity to join a highly skilled cross-functional team working on system-level solutions from prototype to scalable production.
 

Responsibilities:

Design and optimize video path of Camera – Encoder – Transmission (USB, IP, RF) – Decoder - Player via:

• Camera codecs selection and configuration (Rate control, Encoder Presets, Frame buffering, etc.);
• Compatibility issues resolving;
• Design verification, bring up;
• Technical parameters comparison for finding quality/bandwidth tradeoffs, experimenting with setups, preparing POCs for further scaling for manufacture;
• Documenting outcomes of experiments, providing highlights and recommendations for proper operation of the proposed design.
• Contribute to the strategy for development of video products via providing information for roadmap preparation and risks assessment.
   

Skills & Experience:

• Strong knowledge of GStreamer (multimedia pipelines, multi-streaming);
• Hands-on experience with camera encoder configuration (H.264/H.265, alternatives), including slices, ROI, dynamic QP/bitrate control;
• Experience configuring video decoders on the receiver side;
• Deep understanding of networking and transport protocols (TCP, UDP, RTP/RTSP, etc.);
• Knowledge of video containerization, slicing, and packaging for transmission;
• Experience with Embedded Linux for video systems (low-latency pipelines, driver design, interrupt optimization, DMA);
• Experience with camera integration and system-level video architecture design;
   

Nice to Have:

• Understanding of RF video transmission (noise resilience, anti-jamming techniques, obstacle/blockage mitigation);
• Experience with vendor-specific hardware and hybrid encoders;
• Familiarity with streaming technologies such as WebRTC;
• Knowledge of MIPI CSI interfaces;
• Experience applying AI/ML technologies in video systems.
   

This position offers a unique opportunity to work in a high-tech team that develops innovative solutions and directly influence the future of the industry.

Want to learn more about this role? Submit your application and we’ll be in touch to discuss the next steps!

About Appexoft:

Appexoft is a Software Development Company that provides a full range of top-quality IT services. Our mission is to develop first-class applications and websites to provide our clients with the best solutions for maximizing their profits and turning their ideas into reality.

We offer:

• Opportunities for career growth;
• Competitive salaries;
• A friendly and professional team;
• A comfortable working environment;
• Delicious coffee, biscuits, and tea to keep you in a good mood;
• Free one-to-one English lessons with a teacher;
• Legal and accounting support;
• Access to free professional courses and training programs;
• Opportunities to attend industry events and conferences;

Required skills:

• Upper-Intermediate level of English, both spoken and written;
• Understanding of basic IT technologies and industry trends;
• Strong communication and interpersonal skills;
• Stress-resistance and the ability to stay productive under pressure;
• Result-oriented mindset and a high level of self-organization;
• Analytical thinking and excellent presentation skills.

Responsibilities:

• Daily search for potential customers;
• Building and maintaining a client base;
• Monitoring sales and market trends, competitor activities, and potential clients;
• Generating ideas for the development and promotion of our products;
• Preparing regular reports and analysis.

Required Technologies:

Node.js, Express.js / Nest.js
JavaScript (ES6+) / TypeScript
SQL (PostgreSQL, MySQL), NoSQL (MongoDB, Redis)
REST API, GraphQL, WebSockets
Git (GitHub/GitLab), Docker (preferred)
Postman for API testing
 

Nice to Have:

Understanding of OOP, SOLID principles, and design patterns
Experience with testing frameworks (Jest, Mocha, Chai)
 

Requirements:

English level: B1 or higher
Strong motivation to learn and develop in backend engineering
 

We Offer:

Interesting and challenging projects
Vast opportunities for professional development
Competitive salary
Friendly team of professionals
Comfortable working environment

Responsibilities
 

Develop and maintain web applications using React.js (Frontend) and Node.js (Backend).
Work with RESTful APIs and databases (MongoDB, PostgreSQL).
Write clean, efficient, and maintainable code.
Collaborate with designers, backend developers, and product managers to deliver high-quality solutions.
Participate in code reviews and continuously improve development processes.
Debug and fix issues in existing applications.
 

Requirements
 

Basic knowledge of JavaScript/TypeScript, HTML, and CSS.
Experience with React.js and Node.js (academic, personal, or internship projects).
Understanding of REST API principles and client-server architecture.
Familiarity with database management (MongoDB, PostgreSQL or similar).
Experience with Git and version control workflows.
Strong problem-solving skills and a willingness to learn.
English level: B1 or higher
 

Nice to Have

Experience with Redux, Next.js, Express.js, Nest.js.
Basic understanding of Docker, CI/CD pipelines.
Knowledge of testing frameworks (Jest, Cypress).
Familiarity with cloud services (AWS, Firebase).
 

What We Offer

Interesting and challenging projects.
Vast opportunities for professional development.
Competitive salary.
The friendly team of professionals.
Comfortable working environment.

Blackthorn Vision is looking for a Strong Junior Manual QA Engineer. Our client, established in 2011 and based in Colorado, is a leading player in the U.S. application management market. We’ve had a successful partnership with this client and are seeking candidates who are eager to take ownership and improve a product already trusted by over 6,000 enterprises.

Requirements:

• 2+ years of experience in Manual QA;
• Experience working within Agile teams with a clear understanding of ceremonies and team collaboration dynamics;
• Practical experience in both mobile and web application testing, with an understanding of their specifics and differences;
• Good understanding of SDLC and QA processes;
• Ability to write clear and structured test documentation;
• Experience with AzureDevOps and web-based test case management tools;
• Strong attention to detail and analytical thinking;
• Ability to look beyond individual tasks and understand how features impact the overall product and user experience;
• Understanding of client-server architecture basics;

• English level: Upper-Intermediate.

   

Responsibilities:

• Perform manual testing of mobile and web applications;
• Analyze requirements and ensure full understanding before testing;
• Create, maintain, and execute various types of test cases;
• Collaborate closely with developers, PM, and other stakeholders;
• Participate in sprint activities (planning, grooming, demos);
• Contribute to improving QA processes and product quality;

• Support release validation and post-release checks.

   

We offer:

• exciting and challenging work in a friendly and professional environment;
• excellent career opportunities and competitive salary;
• on-site visits to customers;
• flexible work schedule;
• professional development program with internal seminars on technical topics;
• courses, certifications, and access to the corporate library;
• free English classes;
• 18 working days of paid vacation (24 calendar days), 5 full-paid sick leave days, paid public holidays;
• medical insurance;
• maternity leave;
• IT club membership;
• employee referral program;
• recognition program with gifts and awards;
• pet-friendly and eco-friendly;
• direct and easy communication with management and much more.

About us: 

BetterMe — a global wellness ecosystem empowering millions to become better — physically, mentally, and emotionally. We build what makes people better and keep challenging ourselves to inspire others.
 

Your impact:
 

• Take charge of income, expenses reporting and accounting across the Group.
• Lead the way in designing smarter processes that can transform our finance practice.
• Strengthen controls and oversight of group-wide expenses and payment processes.
• Collaborate closely with cross-functional experts in treasury, finance, legal, tax, and other key teams to achieve common goals.
• Provide support for both consolidated and stand-alone audits of the Group and its subsidiaries, ensuring compliance and transparency.
   

About you:
 

• 1+ years of experience as Accountant/Reporting Specialist/Auditor.
• Bachelor/Master degree in accounting, economics, finance or other related fields.
• Comfortable navigating and mastering large data sets in Excel or Google Sheets.
• Structured thinking, attention to details, ability to work with vast quantities of information.
• English — Intermediate.
   

Will be a plus:
 

• Knowledge of accounting software/SaaS: Microsoft Dynamics 365, 1C, Xero, QuickBooks, or other ERP systems.
• Involvement in reporting procedures at multinational companies, accounting for non-resident companies. Dealing with E-com/SaaS businesses.
• Availability of accounting/financial qualification such as DipIFR, ACCA, CAP / CIPA, CPA etc.(started or completed).
   

What you get at BetterMe:
 

A mission that inspires. Every line of code, every design, every idea helps millions of people become healthier and more confident.
Trust without micromanagement. You manage your time and make decisions independently. We value outcomes, not online hours.
Growth opportunities. 90% of our leads have grown within the company. There’s space for initiative, new responsibilities, and real career upgrades.
Flexible work format. Choose what works best for you — office, remote, or hybrid.
Wellness in practice. Offline: workouts with professional trainers in our corporate gym, massage, corporate lunches, sports, and team activities — everything you need to recharge and reset together. Online: regular online workouts, partner discounts, and free access to our products.
Health insurance & corporate doctor.
Open communication. Transparency across teams, honest feedback, and support for initiatives are part of our everyday culture.
Support for sports events. We cover entry fees and encourage the team to compete and participate together.
Modern equipment. We provide new hardware and everything you need for productive work.
Legal & finance support. Experienced lawyers and financial specialists are always there to help — from documents to personal consultations.

Find more about us on social media platforms: Instagram, LinkedIn.
 

We’re looking for a visionary Head of Product Design to lead the evolution of our digital ecosystem. This isn’t just about building features — it’s about shaping a unified, high-end experience across banking, crypto, and lifestyle products.

Key Responsibilities

1. Product Vision & Execution

• End-to-End Ownership: Guide the design direction across all product lines, ensuring seamless, premium experiences.
• Simplifying Complexity: Transform high-friction financial flows (e.g., KYC, staking, cross-border transfers) into elegant, user-friendly solutions.
• Data-Informed Design: Set and monitor design KPIs such as usability scores, task completion rates, and user satisfaction.

2. Team Leadership & Design Operations

• Mentorship: Lead and grow a high-performing team of 4+ UX/UI designers.
• AI-Driven Workflow: Integrate AI into design processes to accelerate prototyping and reduce manual tasks.
• System Evolution: Develop and maintain a design system (components, patterns, tokens) to support a fast-moving product roadmap.

3. Brand & Strategic Impact

• Brand Stewardship: Ensure the company’s visual identity is consistent and premium across apps, marketing materials, and online presence.
• Global Perspective: Conduct research across multiple regions, adapting design for local trust, culture, and user behavior.
• Marketing Collaboration: Work closely with marketing teams to create impactful brand campaigns and assets.

Requirements

• Experience: 5+ years in Product/UX Design, including 3+ years leading design teams in Fintech, Banking, or Crypto.
• Regulated Products: Experience delivering financial products in multiple jurisdictions while maintaining usability.
• Portfolio: A strong body of work showcasing strategic thinking, product design, and brand execution.
• Collaboration: Comfortable presenting bold directions to founders, engineers, and stakeholders.
• Technical Expertise: Advanced Figma skills and familiarity with AI-assisted design tools.
• Languages: Fluent English, Ukrainian.

QATestLab is an international provider of independent testing services with 20+ years of experience delivering QA support across multiple industries: from eCommerce, banking and healthcare to gaming, media, and telecom. Our service portfolio includes manual testing and test automation services for web, desktop, mobile and cloud applications.

The position is open for remote work across Ukraine or for office/hybrid work in Rivne and Khmelnytskyi.

If you have successfully completed testing courses and have English proficiency at the Intermediate level or higher – don’t waste a minute – send your CV and become a part of QATestLab!

We expect that:

• You have a basic theoretical and practical background in testing (completed courses)
• You possess an Intermediate+ level of English and are ready to communicate in English with foreign clients in both oral and written forms
• You understand the role and value of a tester’s work in creating high-quality software
• You understand the product development cycle
• You understand the basics of testing mobile applications on iOS and Android
• You know the main concepts of testing, types, and testing methods
• You are eager to investigate bugs within real and interesting projects
• You want to work towards results and learn non-stop

Main responsibilities:

• Test websites and mobile applications
• Log bugs in the bug tracking system
• Create test cases
• Work with technical documentation
• Prepare reports on testing results
• Participate in team meetings
• Communicate with the client team and the client

We offer:

• Cooperation with a reliable company with well-established processes and a positive team atmosphere
• Work with international markets (main clients: North America, EU)
• A team of experts always ready to help and share knowledge
• Competitive salary with regular reviews based on performance
• 100% compensation for sick leave, 18 days off
• Flexible cooperation format (starting between 8:00 and 11:00, full-time)
• A well-developed corporate culture, social support system, and an extensive loyalty program

Send your CV and join the QATestLab team!

Are you passionate about deploying cutting-edge machine learning models to the edge and cloud? Do you thrive in a dynamic, fast-paced environment where you can push the boundaries of what's been done? 
If so, we have an exciting opportunity for an Embedded Engineer to join our team.

As an Embedded Engineer, you will play a crucial role in developing and deploying different modules/components and models on a variety of edge devices. You will be responsible for designing and implementing robust data processing pipelines that can seamlessly integrate with these edge systems and the cloud, ensuring efficient and reliable model deployment across the edge-cloud continuum.

You will also be comfortable working with both microservices and monolithic architectures, allowing you to adapt to the unique requirements of each project.

Required Skills and Qualifications:

• Proficient in Python, C/C++, and professional knowledge of embedded systems programming.
• Extensive experience in developing and deploying machine learning models on edge devices.
• Deep understanding of message brokers, sockets, and technologies like ZeroMQ, RabbitMQ, or Apache Kafka for building scalable and efficient edge and cloud data processing pipelines.
• Expertise in designing and implementing robust data processing pipelines that can seamlessly integrate with edge devices and cloud infrastructure, handling various data types such as images, videos, text, and audio.
• Familiarity with microservices and monolithic architectures, and their tradeoffs in the context of edge-cloud communication and data flow.
• Familiarity with sensor data acquisition, preprocessing, and integration techniques for edge devices, leveraging protocols like SPI, UART, I2C, and more.
• Experience with container technologies (e.g., Docker, Podman) and container orchestration platforms (e.g., Kubernetes, OpenShift) for deploying and managing edge and cloud-based ML inference services. 
• Knowledge of CI/CD tools and practices, such as Jenkins, Travis CI, or GitHub Actions, to automate the deployment of ML models across the edge-cloud continuum.
• Understanding of edge computing challenges, including resource
  constraints, power management, latency, and offline operation.
  Experience with embedded operating systems, such as Linux (Raspbian, Ubuntu Server) and real-time OSes (e.g., FreeRTOS, NuttX), and their integration with edge ML inference services.
• Proficiency in embedded systems programming, including low-level hardware interaction, device drivers, and firmware development for seamless data exchange between edge devices and the cloud.
• Strong problem-solving and analytical skills, with the ability to think critically and find creative solutions for edge-cloud ML deployments.
• Excellent verbal and written communication skills, with the ability to effectively collaborate with cross-functional teams.

Preferred Experience:

• Experience working with UAVs, drones, or flight controllers, and their integration with embedded AI systems for real-time inference and data processing.
• Knowledge of digital video (HW, protocols, processing, encryption).
• Familiarity with edge-cloud synchronization protocols and mechanisms, such as MQTT, CoAP, or AMQP, for efficient and reliable data transfer between the edge and the cloud.
• Knowledge of robotic frameworks (e.g., ROS, ROS2, Ardupilot) and their application in edge-cloud computing environments for robotics and autonomous systems.
• Experience with time-series data analysis and anomaly detection on edge devices, and integrating these insights with cloud-based data analytics and visualization platforms.

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).

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).