Middle/Senior Frontend Developer (React + TypeScript)
Sigma Software1 day ago
Warsaw, PolandMid Level / Senior
Responsibilities
- Develop and maintain responsive web applications using React and TypeScript.
- Collaborate with designers and backend developers to deliver seamless user experiences.
- Use GraphQL for data fetching and manipulation.
- Build modern, accessible UI components using Material UI or similar libraries.
- Participate in code reviews, sprint planning, and product discussions.
- Drive improvements in performance, code quality, and operational delivery.
- Take ownership of initiatives and contribute improvements across the project.
Requirements
- At least 3 years of experience as a Frontend Developer.
- Hands-on experience with JavaScript and TypeScript.
- Experience with React and GraphQL.
- Experience with Material UI.
- Experience with GitHub and/or other version control systems.
- Upper-Intermediate level of English.
Tech Stack
Categories
About Sigma Software
Sigma Software is a London-headquartered, privately held IT consultancy that designs and builds custom software for startups and enterprises. The company provides end-to-end services—engineering, web and mobile development, .NET/Java platforms, AR/VR, and UI/UX—delivered via outsourcing, managed teams, and consulting. Founded in 2002, it supports long-term product development and modernization projects across multiple industries for global clients.