Full Stack Developer

5 days ago

Bucharest, Bucureşti, Romania Neurony Full time €30,000 - €60,000 per year

Senior Full Stack Developer (React + ) – Remote, Contract B2B

We're looking for a
Senior Full Stack Developer
to join a fast-growing startup reinventing how people experience video entertainment. You'll work on cutting-edge, mobile-first applications at the intersection of AI, video streaming, and high-scale user experiences.

What you'll do:

  • Teaming up with the founding crew to help shape our product direction.
  • Building and maintaining high-quality, performant React-based web and mobile-first UIs.
  • Designing and building APIs and backend microservices.
  • Connecting the frontend to complex video and data pipelines.
  • Ensuring seamless integration of 9:16 mobile-first video experiences.
  • Building features end-to-end: idea → design → development → testing → launch.
  • Writing clean, modular, testable, and maintainable code across the stack.
  • Collaborating with Product, Design, and AI engineers to push the boundaries of short-form storytelling.
  • Operating with autonomy and ownership, making technical decisions that directly impact millions of users.

What we're looking for:

  • 5+ years of professional fullstack development experience.
  • 3+ years of hands-on experience with React (Hooks, Context, state management, performance optimization).
  • 3+ years of experience building backend systems (Express, NestJS, or similar frameworks).
  • Strong understanding of JavaScript (ES6+) and TypeScript.
  • Experience designing and building APIs (REST and/or GraphQL).
  • Solid experience with relational (Postgres/MySQL) and NoSQL databases (MongoDB, DynamoDB, etc.).
  • Experience deploying production apps in AWS / GCP / Azure.
  • Familiarity with CI/CD, Docker, and scalable system design.
  • Excellent communication and collaboration skills.
  • Background in developing B2B/SMB web platforms.
  • Highly independent, accountable, and a team player with a startup mindset.

Nice to Have

  • Experience with
    React Native
    (or another mobile framework).
  • Background in
    video streaming, content platforms, or social apps
    .
  • Familiarity with
    AI/ML integrations
    (LLMs, prompt engineering, agents).
  • Experience with real-time features (WebSockets, pub/sub systems).
  • Prior work at a
    high-scale consumer product
    (millions of users).

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