Senior Frontend Developer (React)

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Frontend Developer (React) in Poland.

This is an exciting opportunity for a seasoned frontend developer to build high-impact web applications in a fast-moving, product-focused environment. You will take ownership of developing modern, scalable user interfaces while ensuring performance, reliability, and maintainability. Working closely with product, design, and backend teams, you’ll transform complex ideas into intuitive user experiences. The role emphasizes both engineering excellence and strong testing practices, giving you end-to-end responsibility for quality delivery. You’ll have the chance to work with cutting-edge tools and continuously evolve your technical expertise. This position is ideal for someone who thrives in a collaborative setting, enjoys solving complex problems, and is passionate about delivering exceptional frontend experiences.

Accountabilities

• Design and develop user-facing features using React, JavaScript, and TypeScript, ensuring high performance and responsiveness
• Build reusable components and scalable UI libraries to support long-term product growth
• Translate complex UI/UX designs into clean, efficient, and maintainable code
• Collaborate cross-functionally with product managers, designers, and backend engineers to deliver seamless solutions
• Optimize applications for speed, scalability, and technical feasibility across different environments
• Lead automated testing initiatives, including writing and maintaining test scripts using tools like Cypress, Playwright, or Storybook
• Conduct code reviews and enforce best practices to maintain high standards of code quality
• Continuously improve existing codebases and address performance or usability issues proactively