Jobs Developers

We’re looking for a Senior Full Stack Engineer to join a Web3 project.

The project is based on ZK-proof technology (zero-knowledge proofs), enabling decentralized verification of user attributes without directly exposing personal data.

Responsibilities:

• Design, develop, and implement blockchain solutions using Node.js, JavaScript, and TypeScript, following clean code principles
• Collaborate with the team to define project requirements and architecture for blockchain-based applications
• Integrate blockchain functionality into new and existing systems and applications
• Perform code reviews and ensure the quality and security of the developed software
• Develop and maintain tests for components
• Collaborate with other developers and stakeholders to identify and implement improvements.

Professional requirements:

• Strong knowledge of JavaScript/Typescript, with a focus on writing clean, maintainable code
• 3+ years of commercial experience as a full-stack engineer with NodeJS (NestJS)
• Strong understanding of the event loop in Node.js and its implications on application performance and scalability
• 2+ years of commercial experience with ReactJS/Next.js
• Familiarity with asynchronous programming concepts, including Promises and async/await
• Experience with optimizing code performance and addressing blocking and concurrency issues in event-driven systems
• Solid understanding of blockchain technology, cryptographic principles, and decentralized systems
• Experience with viem, ethers.js or similar libraries for interacting with blockchain networks
• Strong problem-solving skills and the ability to troubleshoot complex issues;
• Proficiency in writing unit tests, integration tests, and end-to-end tests for Node.js and blockchain components
• Experience with PostgreSQL databases and query languages (e.g. SQL)
• Familiarity with database design and optimization principles

Will be a plus:

• Experience in designing and maintaining SDKs and public-facing components
• Understanding of, or hands-on experience with, decentralized or multi-party protocols
• Solid understanding of zero-knowledge proofs (ZKPs) and their applications

We offer:

• Competitive compensation
• Social package (24 working days of annual leave, 5 paid sick days)
• Flexible working hours
• Challenging projects in diverse business domains and a variety of tech stacks
• Personal development and professional growth opportunities
• Work with talented, ambitious and family-feel teams
• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes
• Compensation for your professional certification & support for your learning activities
• Opportunity to choose IT equipment you like
• Corporate social responsibility

Project overview 
Group107 is looking for a Senior Desktop Systems Engineer to join a client project - Othello, a SalesTech startup building a real-time AI platform that empowers sales professionals to succeed in every conversation. The platform integrates with calendar, email, and CRM, delivering smart pre-meeting insights, live in-call guidance, and post-call performance analysis (buyer sentiment, action items, recommendations).
 

You will join an early-stage, well-funded team (pre-seed at $20M valuation, backed by Long Journey Ventures and founders of DoorDash, Axonius, Exodigo, and Chime) at a critical moment — just before the seed round — with enterprise pilots already running with companies of $10B+ market cap, including U.S. Steel.

     Responsibilities

• Build and improve a high-performance desktop application across macOS and Windows
• Own OS-level behavior including window management, lifecycle, background processes, system events, permissions, notifications, installers, auto-updates, and device or app integrations
• Design and implement native modules and system-level integrations where needed
• Work across Electron, native code, and desktop architecture to push the product far beyond a typical web app in a shell
• Help define how the application is structured across processes, IPC boundaries, native capabilities, and the frontend layer
• Drive performance, responsiveness, stability, and correctness across the desktop stack
• Contribute to product experience and interaction quality, especially where desktop behavior directly shapes UX

• Take full ownership of complex desktop problems end-to-end, from architecture to delivery, with minimal supervision

   

  Requirements

• 8+ years of professional software engineering experience
• 3+ years of hands-on experience building production desktop applications
• Strong experience building desktop software on macOS and/or Windows
• macOS: Advanced knowledge of Swift (Objective-C is a plus)
• Windows: Strong experience with Rust or C++ (C# is acceptable)
• Deep understanding of operating system behavior and desktop application architecture
• Strong grasp of system-level concerns: process architecture, memory and CPU usage, IPC, permissions, windowing, file system access, auto-updates, and OS integrations
• Ability to reason about low-level implementation details while keeping product quality high
• Experience designing software that feels truly native on macOS and Windows
• Experience with Electron in production
• Solid React knowledge and frontend sensibility
• Strong engineering judgment, problem-solving ability, and high execution standards
• Ability to look at the product from a user perspective and care deeply about responsiveness, smoothness, and correctness
• English — Advanced (C1) or higher

     Soft Skills

• Very strong written and verbal communication skills
• High ownership — drives problems to resolution without micromanagement
• Self-sufficient and comfortable operating with minimal task-level direction
• Strong product mindset — evaluates engineering decisions through the lens of end-user experience
• Ability to take on hard engineering problems and solve them properly
• Comfortable in an early-stage, fast-moving startup environment

     Nice to Have

• Experience publishing apps to the Mac App Store and/or Microsoft Store
• Familiarity with code signing, notarization, and update channels (Sparkle, Squirrel, etc.)
• Experience with audio/video capture, accessibility APIs, or system-wide overlays
• Exposure to AI-powered product features or real-time data pipelines
• Experience working with FastAPI / Python backends or GCP infrastructure

linkWhat you’ll do

• Own and drive the backend direction of the company as one of the key technical leaders;

• Design and implement new game mechanics on top of our existing PGS, extend its capabilities, and contribute to core gameplay engine development;

• Architect scalable, secure, and high-performance backend services using Node.js and TypeScript;

• Work closely with Game Logic, Frontend, and DevOps teams to ensure seamless integrations, real-time performance, and platform-wide consistency;

• Define backend engineering standards and enforce best practices across code quality, architecture, and performance;

• Design and maintain backend infrastructure: schemas, caching, messaging flows, microservices, gateways;

• Participate in roadmap planning, technical decision-making, and architectural discussions as the platform evolves;

• Support a rapidly growing product and engineering environment — we are scaling fast, and you will play a major role in that growth.

What you bring

• 5+ years of backend development experience, including ownership of complex systems or features;

• Strong expertise with Node.js + TypeScript and modern frameworks (Fastify, Nest.js);

• Advanced knowledge of SQL and NoSQL databases: PostgreSQL, MongoDB, Redis;

• Solid experience with message brokers (RabbitMQ or Kafka) and queue-based, event-driven design patterns;

• Deep understanding of distributed systems, microservices, and real-time communication (WebSocket, Socket.io);

• Experience building high-performance APIs, async flows, caching strategies, and scalable architectures;

• Confident with CI/CD, Git, automated testing (Jest), and monitoring/observability tools (Grafana, Loki, Tempo).

Nice to have

• Knowledge of PHP/Laravel or experience with other backend ecosystems;

• Familiarity with AWS, Docker, Kubernetes, containerized deployments;

• Experience with RNG, platform integrations, or the iGaming ecosystem.

Benefits

• 21 vacation days + 5 extra day-offs annually;

• 12 paid sick days;

• Fully remote format — work from anywhere you feel productive;

• Flexible schedule: start your day anytime between 08:00–12:00 CET;

• Fixed budget for health insurance and gym/fitness;

• Provided all required work equipment;

• Zero bureaucracy and direct communication with founders and C-level;

• Minimal meetings, async-friendly workflow;

• Startup energy: fast motion, creativity, and tight-knit communication;

• Business trips and team meetups several times per year;

• Multiple salary payout options (flexible formats);

• …And many more perks unlocked after we hit break-even.

On behalf of our Client from France, Mobilunity is looking for a Backend Developer.

Our Client is building a new digital product focused on ticketing solutions for the entertainment industry. The platform enables users to easily discover, purchase, and manage tickets for various venues such as clubs, concerts, and other live events.

The product is designed to provide a seamless booking experience, allowing users to access events, manage reservations, and interact with venues in real time. At the same time, it empowers businesses to efficiently manage ticket sales, optimize attendance, and build direct relationships with their audience.

This is a greenfield project aimed at rebuilding the service from scratch using modern technologies and scalable architecture.

Their goal is to create a leading platform in the entertainment space, helping venues and event organizers deliver a smooth and engaging digital experience, while increasing customer loyalty and operational efficiency.
 

Requirements:

Backend:
 

• Strong experience with PHP 8.2+ (typed properties, enums, readonly classes, attributes, fibers)
• Solid knowledge of Symfony 7 (Messenger, Doctrine ORM, DI Container, Security, Twig)
• Experience with MySQL / Doctrine DBAL, including complex queries, indexing, EXPLAIN, and transaction management
• Hands-on experience with Docker / Docker Compose
• Confident use of Git workflows (pull requests, code reviews)
   

Architecture & Engineering:
 

• Practical experience with DDD (bounded contexts, aggregates, value objects, domain events)
• Strong understanding of Hexagonal Architecture (Ports & Adapters)
• Experience with CQRS (commands, queries, handlers)
• Hands-on experience with event-driven architecture (async processing, event listeners)
• Solid understanding of SOLID principles and clean code practices
   

Frontend (basic knowledge):
 

• Basic experience with React and Next.js (ability to read and modify existing components)
• Working knowledge of TypeScript
• Familiarity with Zustand
• Ability to work with Tailwind CSS
• Experience with Twig
   

AI:
 

• Experience using AI coding assistants (e.g., Claude Code)
• AI-assisted code generation, testing, and documentation
• Ability to review and validate AI-generated output

In return we offer:
 

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Come on board, and let’s grow together!

Ruby Backend Developer (Remote)

Role

Bluegeko is looking for a Ruby Backend Developer to join our fully remote team. You will work on scalable backend systems and APIs for U.S. based partner projects, collaborating with developers, QA engineers, and product teams across international environments.

Tech Stack

• Ruby / Ruby on Rails
• PostgreSQL
• REST APIs
• Sidekiq
• Redis
• Docker
• AWS
• GitHub / GitLab
• CI/CD pipelines
• RSpec

Responsibilities

• Develop and maintain backend services and APIs
• Participate in architecture discussions and code reviews
• Collaborate with developers, QA, and product teams
• Analyze requirements and break down technical tasks

• Improve system performance and reliability

   

Requirements

• 3yrs+ Experience with Ruby and backend development
• Experience with Ruby on Rails and SQL databases
• Understanding of scalable backend systems and APIs
• Familiarity with Git workflows and CI/CD
• Good English communication skills

What We Offer

• Fully remote position
• Competitive salary
• Performance bonuses (For delivery)
• Flexible working hours
• International U.S. projects
• Professional development opportunities
• Work on large-scale infrastructure products used globally

A Sr Engineer is needed to join the development of a high-traffic web platform used by a broad customer base. The product ecosystem includes an AI-powered website builder, a customer management dashboard, and internal support tools.

This role is more focused on backend development with Node.js and TypeScript, but it also requires React experience so you can handle your frontend tasks independently rather than relying on a frontend developer. 

Infrastructure and production environments are handled by a separate DevOps team, so your focus will remain on application development rather than production support or infrastructure management.

Responsibilities

1. Design, develop, and maintain backend services throughout the full development lifecycle
2. Assist with frontend implementation when needed to deliver product features
3. Release new functionality and monitor feature stability after deployment
4. Work closely with Product, Platform, and Reliability teams
5. Contribute to technical improvements and enhancements within the existing architecture

Tech Stack

Node.js, TypeScript, React, Redis, MySQL, PostgreSQL, Elasticsearch, Kafka/RabbitMQ, monitoring and observability tools

Requirements

• Strong hands-on commercial experience with Node.js and TypeScript
• Experience with React and modern frontend engineering practices
• Solid experience with databases, caching, and data management approaches
• Experience investigating and resolving issues in distributed environments
• A product ownership mindset, with the ability to take features from concept to production
• English communication skills for daily collaboration and team meetings

Nice to Have

Experience with microservice architectures and API development

Experience with Docker and Kubernetes

Knowledge of application performance tuning and optimization

Basic understanding of Linux and networking

Familiarity with clean architecture principles and testing methodologies

What the Company Offers

• Fully remote work environment with a flexible schedule
• Paid vacation and days off
• Salary reviews twice a year
• B2B/contractor cooperation model with accounting support
• An opportunity to work on a large-scale product and influence technical direction

About the project
We are working on a drone-related technology project as part of OsirisAI.

The role focuses on working with embedded hardware platforms, integrating peripherals and diagnosing low-level system issues. You will work with existing boards, cameras, controllers and communication modules used in drone systems.

⸻

Responsibilities
 • Work with Linux on embedded systems
 • Debug and develop drivers and hardware integrations
 • Integrate peripherals such as cameras, controllers and CAN modules
 • Diagnose system-level issues between hardware and software
 • Perform low-level debugging and root cause analysis
 • Configure and maintain system components on embedded Linux devices

⸻

Requirements
 • Experience building embedded Linux systems using Buildroot, Yocto, or similar frameworks
- Familiarity with Linux kernel configuration, device trees, and hardware driver enablement
- Understanding of cross-compilation toolchains for ARM or RISC-V processors
- Experience with over-the-air (OTA) update systems and A/B partition schemes
- Working knowledge of cryptography concepts: digital signatures, encryption, certificates, and key management
- Exposure to Linux security frameworks, particularly SELinux policy development
- Strong shell scripting ability (Bash) in a production environment
- Familiarity with container technologies (Docker, containerd) at the system level, not just as a user
- Ability to work with vendor hardware documentation and integrate proprietary components into reproducible builds

Programming languages (practical level):
 • C
 • Python
 • Bash

⸻

Nice to have
  - Experience with drone, robotics, or safety-critical embedded systems
- Familiarity with TPM (Trusted Platform Module) hardware security
- Background in CI/CD pipelines for embedded firmware (e.g., Jenkins)

We are looking for a Mid-level Backend Developer (PHP / Laravel) for our product in the eSports industry.

About the project:
This is a next-generation trading platform for CS2 skins, where users can buy and sell in-game items for real money. We are building a product that combines a B2C marketplace for players and B2B infrastructure for businesses. At the core, we have our own skin-based payment system (B2B). The project involves a large number of integrations and asynchronous logic. It is important to be able to work with external APIs and quickly understand unstable scenarios.

Reason for opening a vacancy:
Team expansion due to product growth and increased load. We are looking for a developer to accelerate the development of new features, improve system stability, and scale the backend.

Location: Remote.
Current team: 2 Backend Developers, 2 DevOps engineers, 2 Frontend Developers, Designer, QA engineer, Product Manager.

Requirements:
• 2+ years of commercial experience in the same position
• Strong knowledge of PHP and Laravel
• Basic understanding of Clean Architecture principles
• Basic understanding of DDD (aggregates, value objects)
• Practical experience integrating external services
• Experience working with REST APIs, including:
— authorization (API keys, signatures, etc.)
— idempotency
— error handling
— retry / basic backoff
— working with rate limits
• Experience working with queues (we use Horizon over Redis)
• Experience with data caching
• Experience working with webSockets
• Experience with MySQL (complex SQL, indexes, optimization)
• PSR12 compliance
• Basic understanding of fault tolerance principles (idempotency — basic level)

• Ukrainian or Russian — Upper-Intermediate+ / Advanced (for internal communication)
  • English — Intermediate

Domain & integrations experience (important):
• Experience with payment systems (crypto / fiat)
• Experience with Steam API or other gaming APIs
• Experience with marketplace / trading platforms
• Experience working with data providers (pricing APIs, etc.)
• Experience with third-party CS2 marketplace APIs — will be a strong plus 

Will be an advantage:
• Understanding of webhooks
• Experience with real-time systems
• Experience with Temporal (or similar workflow systems)

List of technologies:
• PHP 8.2 / Laravel 10/11
• MySQL
• Redis (cache, queues)
• REST API
• Docker (basic level)
• Git (CI/CD)

Responsibilities:
• Development and support of backend product logic (new features and maintenance of existing ones)
• Integration with external APIs (payment systems, data providers, gaming APIs)
• Working with queues and asynchronous processes
• Participation in task decomposition and solution design
• Performance and stability optimization
• Improving code structure and quality, participation in code reviews
• Interaction with the team

What we offer:
• 24 days of paid leave
• 100% paid sick leave
• Full-time remote work
• Long-term collaboration
• Sustainable business
• Work in a game and entertainment development company

The path to joining us:
• HR Interview (1 hour): Let’s get to know each other
• Test Task: Put your skills to the test
• Technical Interview (1 hour): Dive deeper into your expertise

#WeAreIn for jobs that impact everyone's life. What if your ideas could change the way the world connects, powers up, or thinks? As a Staff Embedded Software Engineer in our Research & Development team, you'll have the opportunity to merge creativity with your technical expertise by shaping the future of technology, driving groundbreaking projects, and bringing new ideas to life. Are you in?

Your Role
Key responsibilities in your new role
 

• Develop solutions and firmware for ARM-based microcontrollers
• Drive Power/Motor control and CapSenseTM technology development
• Drive platform initialization and enablement across multiple projects
• Design and implement sensing algorithms and end‑to‑end embedded solutions
• Support learning across multiple areas

Your Profile
Qualifications and skills to help you succeed
 

• A university or technical degree
• More than 3 years of experience in embedded systems
• Experience with system-level design, including architecture, hardware, software, firmware, and algorithms
• Strong knowledge of C and embedded design (RTOS, MCUs, Bare-Metal)
• Knowledge of ARM microcontroller architecture and interfaces such as I²C, SPI, UART, and CAN is a plus
• Experience with GIT, CI/CD, and a scripting language (Python, Bash) is a plus

• At least level B1 in English

   

Please send us your CV in English

PRAI builds Advanced PR AI Agents that automate operations, track global narratives, pitch 100K+ journalists, and decode media impact for organizations worldwide. We don't talk about AI transformation — we ship it. Our platform is live, our roadmap moves fast, and we're looking for A-players ready to build the infrastructure that powers next-generation AI Employees.

The Role

We need a Senior Full Stack Engineer who can take full ownership of product areas — from architecture to production — and use AI tooling daily to move faster than a traditional engineering team.

This is not a ticket-execution role. You'll work directly with founders and product leadership, influence technical decisions, and see your work running in production within weeks of joining.

The Team

You'll be working alongside people with backgrounds at:

• PwC
• McKinsey & Company
• EY
• SoftServe
• Apple
• Uber
• Baykar

We operate at startup pace — decisions get made fast, priorities shift when they need to, and everyone keeps up. Expect a mix of async work and live Zoom calls within the same day, screen sharing, real-time problem solving. We're transparent about using a time tracker — if you're confident in your output, it won't be an issue.

What You'll Do

• Build and ship AI-powered full-stack products from architecture to production — owning features end-to-end
• Integrate LLMs, AI agents, and automation systems using OpenAI, Anthropic, and custom prompt workflows
• Develop modern frontend interfaces in React and/or Angular, backed by scalable Python and Node.js services
• Design and maintain APIs, internal tooling, and data pipelines supporting real operational workflows
• Use AI-assisted development tools (Cursor, GPT workflows) daily to ship faster and at higher quality
• Identify engineering bottlenecks and fix them proactively — without being asked
• Collaborate directly with founders and product leadership to turn concepts into working systems
• Maintain high engineering standards in a fast-moving environment

What We're Looking For

Must-haves:

• 5+ years of full-stack engineering experience — shipped real products, not just contributed to them
• Strong command of Python and JavaScript/TypeScript across frontend and backend
• Hands-on experience with React and/or Angular in production
• Direct experience integrating LLMs or AI APIs (OpenAI, Anthropic, or equivalent)
• AWS or GCP at production scale — Docker, CI/CD, infrastructure ownership
• Fluent in Ukrainian or Russian — our core team communicates in these languages daily
• English C1 — clear communication with international stakeholders
• Operates without micromanagement — you drive your own execution

Strong advantage:

• Startup or scale-up background where you owned outcomes, not tasks
• SaaS or AI-native product experience end-to-end
• DevOps or infrastructure ownership beyond basic deployment
• Product intuition — you think about user impact, not just code
• Systems thinking — you design for scale from the start

Core Technologies

Frontend: React, Angular, Next.js, TypeScript, JavaScript, Tailwind CSS Backend: Python, Node.js, REST APIs, GraphQL AI / Automation: OpenAI API, Anthropic API, AI agents, prompt systems, Cursor, workflow automation Infrastructure: PostgreSQL, Redis, Docker, AWS / GCP, CI/CD pipelines

What We Offer

• Fully remote — work from anywhere
• Full-time, EST-aligned schedule (7:00 AM – 4:00 PM EST)
• Direct access to founders — short feedback loops, real influence
• High ownership and product impact from day one
• AI-first development environment — cutting-edge tooling daily
• Minimal bureaucracy — decisions happen fast
• Competitive compensation based on experience and capability

How We Work

EST hours — 7am to 4pm. Direct communication, no layers between you and decision-makers. We move fast, speak plainly, and value people who take full accountability for their output.

How to Apply

Send your CV and a short note on the most complex AI or full-stack product you've built — what it did, what you owned, what you'd do differently. No templates. No generic applications.

Our process: HR screen (15 min) → technical interview (1 hour) → hiring manager interview (up to 1 hour). We respond within 3–5 business days.

While other teams are still discussing AI transformation — we're building it.

Meet the YozmaTech

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is looking for a Senior Full Stack Engineer with strong expertise across both frontend and backend, a passion for building scalable, high-quality products, and proven ability to handle end-to-end feature development.

In this role, you’ll play a key part in advancing our web architecture, improving system performance, and enhancing the overall development standards of our platform. You’ll work on complex real-time products, helping shape fast, reliable, and user-friendly experiences.

If you enjoy solving technical challenges, working with modern technologies, and creating clean, efficient solutions — we’d love to connect.

This role offers the opportunity to make a direct impact on product quality, technical decisions, and overall platform growth within a fast-moving and collaborative environment.

Key Requirements:
🔹 5+ years of software engineering experience, with strong frontend expertise in modern JavaScript frameworks (React, Angular, Vue), TypeScript, and modern build tools (Vite, Next.js, SWC);
🔹 Proven experience improving frontend architecture and scaling web applications;
🔹 Strong understanding of TypeScript, build tools (Webpack, Vite), and browser APIs;
🔹 Solid backend fundamentals 5+ years — API design, data flow management, and building scalable systems with Python as a must-have and Node.js considered a strong plus.
🔹 Hands-on experience with AI tools such as Cursor, Claude, and ChatGPT
🔹 Product-oriented mindset with strong attention to UX, quality, and maintainability;
🔹 Strong communication skills and the ability to work effectively in cross-functional teams;
🔹 English – Upper-Intermediate or higher.

What you will do:
🔹 Drive frontend improvements by introducing better development practices, tools, and modern technologies;
🔹 Design and develop scalable, high-performance web applications using React and modern frontend frameworks;
🔹 Take ownership of features from planning to production, including technical design, implementation, and optimization;
🔹 Work closely with Product, Design, and engineering teams to deliver smooth and intuitive user experiences;
🔹 Support backend development in Python to ensure strong integration across the full product stack;
🔹 Improve development processes, code quality, testing, and overall engineering efficiency;
🔹 Focus on performance, reliability, and maintainability across the platform;

Interview stages:
🔹 HR Interview
🔹 Intro Call
🔹 Technical Interview
🔹 Final Interview
🔹 Reference Check
🔹 Offer

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

Про нас:The Fourth Law (Четвертий Закон) — провідний український виробник технологій автономності для дронів. Рішення компанії кодифіковані за стандартами НАТО та застосовуються у понад 50 підрозділах СОУ і 20+ виробників дронів. Наші вироби носять імена українських діячів розстріляного відродження та шістдесятників — Василя Стуса, Олени Теліги, Миколи Зерова та Анатолія Лупиноса. У 2026 році компанія отримала відзнаку від DOU як найперспективніший проект у сфері оборонних технологій.

Місія ролі:Забезпечити функціональну еволюцію автономної робототехнічної платформи — від дослідження доцільності нових можливостей до їх повноцінного впровадження у продакшн. Твоє завдання — перетворювати інженерні гіпотези на математично валідовані, надійно інтегровані фічі, що працюють у реальних умовах на кастомному Linux-середовищі.

Основні задачі:
Повний цикл фічі: Ведення нових можливостей платформи від фази дослідження до production-ready коду — з відповідальністю за якість кінцевого результату для користувача.
Дослідження доцільності: Оцінка життєздатності нового хардверу (сенсори, NPU, модулі зв'язку) через технічний ресьорч, бенчмаркінг та зіставлення з системними вимогами.
Фізичне моделювання: Математичні розрахунки та базове фізичне моделювання (power/thermal budgeting, латентність сигналу, базова кінематика) для планування та валідації нових інтеграцій.
Оптимізація продуктивності: Дослідження системних bottleneck'ів та імплементація покращень для підвищення real-time продуктивності та ефективності використання ресурсів.
Архітектурна інтеграція: Впровадження нових фіч у встановлену архітектуру з використанням програмних патернів, що забезпечують підтримуваність та production-readiness коду.
Hardware/Software інтеграція: Забезпечення безшовного з'єднання нових компонентів з кастомним Linux-образом — робота на стику фізичного хардверу та аплікаційного рівня.
Agile-процес: Участь у Scrum-церемоніях з ownership над фічами — від першого розрахунку до фінальної доставки в спринті.

Досвід та навички, які ми шукаємо:

• Доведена здатність виконувати системні розрахунки та будувати моделі для прогнозування впливу нових фіч на мобільну робототехнічну платформу.
• Функціональне володіння C++ на рівні production-імплементації та сильний Python для ресьорчу, автоматизації й системної оркестрації.
• Глибоке розуміння архітектурних моделей та програмних патернів (Strategy, State, Observer).
• Впевнена робота у кастомному Linux-середовищі та розуміння взаємодії ОС з хардвером.
• Підтверджений досвід доведення складних фіч від фази концепту/розрахунку до задеплоєного продукту.

• Досвід роботи з MAVLink, ELRS, ROS/ROS2 та контролерами польоту PX4 або ArduPilot.
• Досвід моделювання та симуляції: MATLAB/Simulink, Gazebo або Python-based physics libraries.
• Розуміння вимог до запуску TensorFlow Lite або ONNX на edge-пристроях.
• Базове знайомство з Buildroot або The Yocto Project.
  
  Чому варто обрати нас:
  • Робота, яка матиме реальний вплив.
  • Ми створюємо продукти, які безпосередньо посилюють оборонний потенціал України.
  • Робота з топовими інженерами у сфері MilTech та автономності.
  • Офіційне оформлення трудових відносин в Дія.Сіті.
  • Можливість бронювання військовозобов’язаних працівників згідно з вимогами чинного законодавства.
  • Щорічна оплачувана відпустка — 24 календарні дні.
  • Для ветеранів передбачена додаткова оплачувана відпустка — 14 календарних днів.
  • Оплачувані лікарняні відповідно до законодавства.
  • Можливість компенсації витрат на навчання згідно з внутрішніми політиками.
    
    Ми шукаємо не виконавців, а однодумців, які поділяють наші цінності та готові будувати майбутнє українського MilTech.

United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide

About the product: Global video communication app, where you can meet new friends and communicate with people all over the world. You can co someone very smart, funny, pleasant, just a person of your type. But it’s always up to you whether to join chat or keep searching for another interesting person. We are proud of how many people we connect daily!

In this role, you will

• Take part in team processes (grooming, sprint planning)
• Develop and deliver product tasks to the production environment
• Work on reducing and preventing technical debt
• Create technical designs for product epics
• Decompose epics into clear, executable tasks
• Conduct technical investigations and propose solutions

It’s all about you

• 4+ years of commercial experience in backend development
• 3+ years of experience with Node.js backend development
• Experience with relational and non-relational databases (MongoDB, Postgres and Redis)
• Experience with SOA/Microservices (communication, development process)
• Experience with patterns (DDD, event-driven, SOLID, CQRS)
• Experience working with WebSockets (ws, socket.io)
• Experience working with messaging (BullMQ, RabbitMQ, Kafka)
• Experience with cloud providers (AWS, GCP, etc)
• Experience in scaling and high-load products
• Upper-Intermediate English or higher

What we offer

Care and support:

• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Maternity recovery support allowance
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine

Comfortable working environment:

• Work from our Kyiv hub or remotely with a flexible schedule
• Modern equipment or depreciation of your own tools

Investment in your future:

• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here — so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events

Hiring process

• Intro call
• Technical Interview
• Final Interview
• Reference check
• Offer

We are looking for an AI/ML Engineer to build and scale AI-powered solutions for real-world use cases. This is a hands-on role focused on developing agentic systems, RAG pipelines, fine-tuning workflows, and production-grade LLM integrations.

Part-time during the first month

Requirements

• 4+ years of commercial development experience (Python is a plus)
• Experience building real AI/ML applications
• Strong understanding of modern AI/ML workflows and LLM ecosystems
• Hands-on experience with ML frameworks such as TensorFlow or PyTorch (JAX is also acceptable)
• Experience with LLM APIs (OpenAI, Claude, etc.)
• Understanding of RAG pipelines and AI workflows
• Experience with APIs and third-party integrations
• Basic prompt engineering skills
• Good communication skills
• Comfortable working in a fast-paced environment

Nice to have

• Experience with LoRA, QLoRA, adapters, or other fine-tuning approaches
• Experience with LLM frameworks such as LangChain or LlamaIndex
• Experience working with clients or enterprise systems
• Background as an AI Engineer, ML Engineer, or Data Scientist

Responsibilities

• Build AI-powered features using LLMs (Claude, OpenAI, etc.)
• Develop and optimize RAG pipelines
• Create AI agents and autonomous workflows
• Fine-tune and adapt ML/LLM models for specific use cases
• Integrate AI solutions into products via APIs
• Collaborate with the team and clients to deliver production-ready solutions

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

Cynet is a unified, AI-powered cybersecurity platform that autonomously detects, protects, and responds to threats across Windows endpoints.

The core product is a Windows EDR agent that runs on hundreds of thousands of devices, offering real-time detection, prevention, and response with minimal resource impact.

Built for organizations of all sizes, it consolidates threat detection, response, and compliance into a single agent and console, backed by 24×7 MDR experts.

The platform addresses the industry challenge of growing cyber threats by delivering fast, accurate protection without noise or complexity.

About the Role:

As a Windows C++ Developer, you will join the award-winning Windows EDR team and drive low-level development on the heart of Cynet’s protection platform.

You will design and implement core components in a user-mode, multithreaded environment, owning features end-to-end from architecture through deployment.

Your work will directly impact hundreds of thousands of Windows endpoints, shaping detection and prevention capabilities and ensuring product stability at scale.

This role combines deep technical challenges in Windows internals, performance tuning, and real-time programming with cross-team collaboration among security researchers, product managers, and support engineers.

You will have autonomy to propose solutions, influence architectural decisions, and take ownership of critical features that define the product’s competitive edge.

Key Responsibilities:

• Design and implement user-mode services and low-level components for the Windows EDR agent
• Develop multithreaded applications with thread synchronization and real-time constraints
• Collaborate with security researchers to translate detection rules into code
• Own feature lifecycle: design, coding, performance tuning, and integration
• Debug escalated customer issues, analyze logs, and perform remote debugging sessions
• Conduct code reviews and ensure adherence to OOP and clean coding principles
• Write and maintain unit tests and automation scripts within the existing framework
• Optimize memory management, I/O performance, and resource usage for large-scale deployments
• Participate in sprint planning, PI design sessions, and architectural discussions

Required Competence and Skills:

• 4+ years of experience in C++ development on Windows (modern C++17/20/23 – an advantage)
• Deep understanding of Windows OS internals and Windows API
• Proven experience with multithreaded programming, synchronization, and real-time constraints
• Strong software design, OOP, and clean coding practices
• Expertise in memory management and I/O performance optimization
• Proficient debugging skills, including remote debugging and log analysis
• Familiarity with smart pointers (shared_ptr, unique_ptr) and move semantics
• Experience writing unit tests and integrating automation tests

Nice to Have:

• Kernel-mode development experience
• Background in reverse engineering or malware analysis
• Prior experience in security-oriented software development
• IDF Cyber Unit alumni

Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.