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September 18, 2026

Frontend Developer (React)

Senior • On-site

130 - 145 PLN/yr

Warsaw, MA, Poland

Quick Facts

  • Role: Frontend Developer (React)

  • Work model: 3 days in the office per week + 2 days remote

  • Contract: Temporary replacement (B2B), until 31 March 2027

Description

Develop and enhance the redesigned EFM UI using modern frontend technologies. Implement new business requirements, support releases, and maintain production stability through troubleshooting and bug fixing. Improve code quality by remediating identified vulnerabilities and managing framework dependencies.

Responsibilities

  • Develop and enhance the redesigned EFM UI

  • Implement new business requirements and application functionality

  • Support preparation, stabilization, and production rollout of new EFM UI releases

  • Provide ongoing application support, troubleshooting, and bug fixing

  • Maintain and improve code quality, including vulnerability remediation and dependency management

  • Collaborate with Backend Developers, Business Analysts, Test Engineers, and business users to clarify requirements and deliver solutions

  • Participate in Agile activities (backlog refinement, sprint planning, reviews, and production support)

Requirements

  • Minimum 5 years of professional frontend development experience

  • Strong commercial experience with React.js 18+

  • Very good knowledge of TypeScript and hook-based React development

  • Experience with React Query / TanStack Query

  • Experience with React Testing Library

  • Practical knowledge of Material UI and Tailwind CSS

  • Experience with React Hook Form

  • Ability to develop, maintain, and troubleshoot production frontend applications

  • Good communication skills and effective collaboration in a cross-functional Agile team

  • English fluency (written and spoken)

Benefits

  • Private medical care

  • Sports card co-financing

  • Constant support of a dedicated consultant

  • Employee referral program

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