Front-End Developer - React/SCSS (Sass) @ SquareOne

Warsaw , Masovian Voivodeship, Poland

Type: n/a

Category: IT & Internet & Media

Requirements: English
Company: SquareOne
Region: Warsaw , Masovian Voivodeship

Project Overview:

We are looking for an experienced Front-End Developer specializing in React to join a long-term project for a technology client. The role involves developing and maintaining a large-scale modular web application with a strong focus on scalability, performance, and adherence to modern UI standards. You will work as part of a senior technical team responsible for building advanced UI components and maintaining internal UI libraries.

• 4+ years of professional experience in front-end development with a strong focus on React (in production environments),
• Proficient in JavaScript, TypeScript, and SCSS (Sass),
• Hands-on experience with Redux or other state management libraries,
• Familiarity with tools and libraries such as Vite, Thunk, MUI, CSS Modules, Storybook a strong advantage,
• Solid understanding of front-end architecture principles, design patterns, and clean coding standards,
• Experience in building scalable UI architecture and reusable component libraries,
• Good command of English (minimum B2 level) both spoken and written.

Project Overview:

We are looking for an experienced Front-End Developer specializing in React to join a long-term project for a technology client. The role involves developing and maintaining a large-scale modular web application with a strong focus on scalability, performance, and adherence to modern UI standards. You will work as part of a senior technical team responsible for building advanced UI components and maintaining internal UI libraries.

,[Develop and enhance a complex web application using React (preferably version 18+, version 19 is an advantage),, Design and implement UI components based on best practices and design patterns,, Build and maintain internal UI libraries,, Collaborate closely with back-end, UX/UI, and QA teams,, Participate in defining front-end architecture and development standards,, Implement state management solutions (Redux or similar),, Support documentation and UI component testing (e.g., Storybook, UI tests).] Requirements: React, JavaScript, TypeScript, SCSS, Sass, Redux, CSS, Design Patterns, UI

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