React Frontend Developer - Hybrid B2B

We are looking for an experienced React Frontend Developer to join an international development team working on a modern financial services application.

You will be responsible for developing new functionality as well as maintaining and supporting an existing production application. The role involves working closely with Backend Developers, Test Engineers, Business Analysts and business users within an Agile environment.

Location: Warszawa -3 days from the office

Language : English, Polish good to have

Duration: Long term

Key responsibilities include:

• Developing and enhancing frontend functionality
• Implementing new features based on business requirements
• Maintaining and improving the existing application
• Troubleshooting technical issues and delivering bug fixes
• Supporting application releases and production deployments
• Improving code quality, performance and security
• Collaborating with technical and business teams

The ideal candidate will have strong hands-on experience with React.js 18+, TypeScript and React Query/TanStack Query, together with a solid understanding of React Hooks. Experience with React Testing Library, Material UI (MUI), Tailwind CSS and React Hook Form is also important.