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Frontend Developer (React.js)
  • Warsaw
Frontend Developer (React.js)
Warszawa, Warsaw, Masovian Voivodeship, Polska
RubyPlay
25. 2. 2025
Informacje o stanowisku

We are looking for an experienced Frontend Developer with strong expertise in React.js to join our dynamic team. You will be responsible for developing and maintaining the user-facing parts of our application, a cloud-based client portal that integrates with Google Drive, Google Cloud CDN, and other services to deliver content to users. You’ll collaborate closely with backend developers, designers, and QA engineers to ensure a seamless user experience.

Here’s How You’ll Make an Impact:

  • Develop and maintain the React.js frontend for our cloud-based application.
  • Work with backend engineers to integrate RESTful APIs and manage the flow of data between the frontend and backend.
  • Implement designs and UI components based on Figma or Adobe XD wireframes.
  • Ensure the application is responsive and performs well across various devices and browsers.
  • Integrate CDN resources (e.g., image and file delivery from Google Cloud CDN) and manage signed URLs for secure content access.
  • Write clean, modular, and maintainable code using modern JavaScript (ES6+).
  • Use state management libraries like Redux or Context API to manage application state.
  • Participate in code reviews, providing and receiving constructive feedback.
  • Optimize components for maximum performance across various devices and browsers.
  • Collaborate with the QA team to identify and fix frontend bugs.

What Makes You A Strong Candidate:

  • 3+ years of experience in frontend development with React.js .
  • Strong knowledge of JavaScript (ES6+) , HTML5 , CSS3 , and SASS or LESS .
  • Experience with RESTful APIs and integrating frontend with backend services.
  • Familiarity with Redux , Context API , or similar state management libraries.
  • Experience working with CDNs and optimizing file delivery for performance.
  • Familiarity with version control (Git) and CI/CD pipelines.
  • Knowledge of performance optimization techniques (lazy loading, code splitting, etc.).
  • Experience with testing frameworks such as Jest or React Testing Library .
  • Knowledge of authentication techniques, including JWT and OAuth2 .

Bonus Points If You Have:

  • Experience with TypeScript .
  • Familiarity with Google Cloud services, particularly Google Cloud CDN and Google Drive API .
  • Experience with GraphQL .
  • Knowledge of UI/UX principles and familiarity with tools like Figma or Adobe XD .

Why You’ll Love It Here:

  • Talented and open people around
  • Budget for personal development
  • Well-being Budget
  • Annual bonus
  • Development days to grow professionally
  • Free English classes
  • Paid vacation days/paid sick leaves

Interested in becoming a RubyPlayer and making your mark in iGaming world? Join us!

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