Frontend Developer with React
Sii Sp. z o.o.Warszawa, Masovian, Poland30+ days ago
Job descriptionCSS3 Next.js Jasmine Cypress Join a global banking client’s team and help shape the company’s visual language across hundreds of applications. In this role, you’ll be part of a central, cross-location team developing and maintaining an enterprise-level UI components library used firmwide. You’ll work on innovative projects built with React and TypeScript, focusing on modern technologies and clean architecture — with no legacy code. This hybrid position requires 3 days per week in the Warsaw office. Design, build, and enhance reusable UI components in React Deliver new features, resolve issues, and release new package versions Collaborate with UX designers, architects, and other teams to translate requirements into scalable solutions Perform code reviews and ensure code quality through testing Support internal teams in integrating UI libraries into their products Continuously research and adopt new front-end technologies to improve performance and accessibility Minimum 5 years of experience in modern front-end development (React, TypeScript) Strong understanding of web technologies, browser APIs, and component-based architecture Experience with testing (unit tests with Jasmine / RTL, E2E tests with Cypress) Familiarity with CSS-in-JS, PWAs, SSR frameworks (Next.js / Gatsby), and accessibility (WCAG) Excellent communication skills in English, enabling effective collaboration within an international team Residing in Poland required
technologies-expected :
- React.js
- JavaScript
- TypeScript
technologies-optional :
about-project :
responsibilities :
requirements-expected :
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Frontend Developer • Warszawa, Masovian, Poland
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