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November 4, 2026

Senior Frontend Engineer (React / TypeScript)

Senior • On-site

30,000 - 43,000 PLN/yr

Warsaw, Poland

Quick Facts

  • Role: Senior Frontend Engineer (primarily Frontend, with some Backend)
  • Focus: Performance, user experience, scalable web applications
  • Tools/Tech: React, TypeScript, AI-assisted development (Claude/GPT)

Description

We are looking for an experienced Frontend Engineer to develop and enhance modern, scalable web applications, with a strong focus on performance and user experience. The role is approximately 80% frontend and 20% backend development, including work on features, architecture, integrations, and database-related tasks. You will work independently and use AI-assisted development tools while maintaining high standards for code quality, security, and maintainability.

Responsibilities

  • Develop and maintain web applications using React and TypeScript
  • Build reusable UI components and scalable frontend solutions
  • Implement new features and improve application performance
  • Contribute to backend development, including APIs, integrations, and database-related tasks
  • Ensure code quality, security, and maintainability
  • Take ownership of development initiatives and collaborate with technical and business stakeholders
  • Use AI-powered tools to improve development efficiency while applying sound engineering judgment

Requirements

  • 6+ years of frontend development experience
  • Strong knowledge of React, TypeScript, HTML, and CSS
  • Understanding of application architecture and experience working across the full stack
  • Backend development experience, preferably with C#/.NET or other object-oriented languages
  • Good understanding of APIs, databases, and application integrations
  • Experience with AI-assisted coding tools such as Claude or GPT
  • Ability to work independently and deliver solutions from concept to production
  • Strong analytical and communication skills
  • Degree in Computer Science, Mathematics, Engineering, or a related field

Benefits

Not specified in the provided posting.

Nice to Have

  • Experience with AG Grid
  • Familiarity with large datasets and complex database structures
  • Experience with enterprise-level applications and CI/CD practices

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