
Full Stack Engineer
Department:Software Engineer
Type:REMOTE
Region:EU
Location:Bucharest, Romania
Experience:Mid-Senior level
Estimated Salary:€60,000 - €90,000
Skills:
REACTNODEJSJAVASCRIPTTYPESCRIPTRESTGRAPHQLPOSTGRESMYSQLMONGODBDYNAMODBAWSGCPAZURECICDDOCKERMICROSERVICESREACT NATIVEWEBSOCKETSAIML
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Job Description
Posted on: October 5, 2025
Senior Full Stack Engineer (React + Node.js) – Remote, Contract B2B
We’re looking for a Senior Full-stack Engineer 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 Node.js 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 Node.js 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).
Originally posted on LinkedIn
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