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September 23, 2026

Frontend Developer (React)

Mid • On-site

95 - 95 PLN/yr

Warsaw, Poland

Quick Facts

  • Role: Frontend Developer (React)

  • Focus: Building and evolving React-based web application interfaces

Description

You will be responsible for developing React frontend applications: creating and improving user interface components, implementing new functionality, maintaining existing code, and integrating the frontend layer with backend services via REST APIs.

You will also build responsive web interfaces and support performance work by diagnosing and fixing errors, while ensuring code quality, readability, and reusability through good frontend coding practices.

Responsibilities

  • Develop and maintain frontend applications using React

  • Implement new UI components and features

  • Maintain and improve existing frontend code

  • Integrate frontend with backend services via REST API

  • Create responsive web interfaces

  • Optimize application performance

  • Diagnose and fix bugs

  • Ensure code quality, readability, and reusability

  • Collaborate with the project team on application development

Requirements

  • Minimum 3 years of experience in building frontend applications

  • Very good knowledge of React

  • Very good knowledge of JavaScript

  • Knowledge of HTML5 and CSS3

  • Knowledge of TypeScript

  • Experience integrating applications with REST API

  • Knowledge of Git version control

  • Knowledge of responsive web application development principles

  • Knowledge of best practices for creating and organizing frontend code

  • Ability to debug and optimize applications

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