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Vacancy in Poland: Senior Front-End developer Salary

About the Company
Our client is a global leader in the live-streaming industry, with over 450 million registered users worldwide. The company builds a cutting-edge B2C platform that empowers millions of talented creators to share live content, engage with audiences, and monetize their skills — all powered by top-tier video streaming technology.

The company culture is dynamic, innovative, and growth-oriented. With a strong global presence and 500+ employees, the team values creativity, technical excellence, and collaboration.


Responsibilities

  • Develop and maintain Single Page Applications (SPA) using React.js — including mobile-first web versions and admin panels.

  • Collaborate with cross-functional teams to meet both product and technical goals.

  • Integrate backend APIs (REST, WebSocket).

  • Proactively optimize and improve existing solutions, focusing on performance, scalability, and architecture.

  • Conduct code reviews and ensure adherence to best practices.

  • Share knowledge and expertise within the development team.


Requirements

  • 5+ years of experience in JavaScript (ES6+)/TypeScript development.

  • Strong expertise in React.js and its ecosystem (Hooks, Context API).

  • Proven experience with state management frameworks, especially Redux (Redux Toolkit preferred).

  • Proficiency in responsive design using SCSS/SASS, CSS Modules, or Styled Components.

  • Understanding of React performance optimization (lazy loading, memoization, virtualization).

  • Hands-on experience with build tools (Webpack or Vite).

  • Familiarity with modern development workflows (CI/CD, ESLint).

  • Intermediate level of English or higher.


Nice to Have

  • Experience with graphic engines (PixiJS, Godot, Babylon).

  • Familiarity with Next.js or other SSR frameworks.

  • Understanding of micro-frontend architectures and module federation.

  • Experience with video streaming technologies (HLS, WebRTC).

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