Front-End developer (Warsaw)

Responsibilities:

• Development and support of SPA on ReactJS: web version (mobile-first) of a high-load application and admin panels for marketing pages
• Collaborate with other teams to effectively meet the product and technical needs of the project
• Integrate backend APIs (REST, WebSocket)
• Proactively participate in improving and fine-tuning existing solutions and discussions on architectural improvements, optimizations, and scalability of the front-end solutions
• Conduct code reviews, ensuring code quality and adherence to best practices

• Share expertise and knowledge with teammates

   

Requirements:

• 5+ years of experience in JS (ES6+)/TypeScript development
• Advanced understanding of React and its ecosystem (React Hooks, Context API)
• Solid experience with state management frameworks, especially Redux (Redux Toolkit preferred)
• Strong skills in creating responsive layouts with SCSS/SASS, CSS Modules, or Styled Components
• Understanding of performance optimization techniques in React (lazy loading, memoization, virtualization)
• Proficiency with build tools (Webpack/Vite) and familiarity with modern development tools (CI/CD, ESLint)

• Intermediate level of English

   

Nice to Have:

• A big plus - a working experience with graphic engines like PixiJS, Godot, Babylon
• Experience with server-side rendering frameworks (Next.js)
• Knowledge of micro-frontend architectures and module federation
• Knowledge of browser limitations
• Experience with video streaming technologies (HLS, WebRTC)