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UI Engineer – Component Libraries

Warsaw, Poland · Contract · Hybrid

Frontend Software Engineer (React / Design Systems / AI-Assisted Development)

🚀 Join us in building the UI foundation used across a global organization.

We are looking for a Frontend Software Engineer to help develop and evolve a large-scale React-based component library that powers web applications across the firm. This is an opportunity to work on a highly impactful platform where code quality, accessibility, consistency, and developer experience are at the core of everything we build.

As part of the team, you'll create production-ready UI components, improve engineering tooling, and leverage AI-powered development workflows to accelerate delivery and innovation.

What You'll Do

✅ Design, build, and maintain reusable UI components used across multiple products

✅ Enhance and support the component library, styling framework, and build tooling

✅ Diagnose and resolve issues related to components, theming, accessibility, and developer workflows

✅ Collaborate closely with design and platform engineering teams to ensure alignment with design system standards and WCAG accessibility requirements

✅ Use AI coding agents such as Claude Code and similar tools as an integral part of your daily development workflow

✅ Design and implement UI-focused AI agent skills and contribute improvements to AI-assisted engineering processes

✅ Drive best practices around testing, performance, maintainability, and scalability

Tech Stack

• TypeScript & JavaScript

• React (primary framework)

• Angular (maintenance activities)

• CSS-in-JS & Sass

• Bazel (build and monorepo tooling)

• React Testing Library & Cypress

What We're Looking For

✔ Strong expertise in React and TypeScript

✔ Experience building reusable UI components, component libraries, or enterprise design systems

✔ Understanding of modern styling approaches including CSS-in-JS

✔ Experience creating accessible, WCAG-compliant user interfaces

✔ Hands-on experience working with AI coding tools such as Claude Code, Cursor, GitHub Copilot, or similar agentic development solutions

✔ Ability to effectively guide AI agents within large, convention-heavy codebases

✔ Interest in improving AI development workflows, prompts, guardrails, and engineering productivity

Nice to Have

➕ Experience working in large-scale monorepos

➕ Familiarity with Bazel

➕ Experience maintaining Angular applications

➕ Exposure to developer platform engineering or design system teams

Why Join?

You'll have the opportunity to influence the UI platform used by numerous engineering teams, contribute to the future of AI-assisted software development, and work on challenging frontend architecture problems at scale.

📩 Interested or know someone who could be a great fit? Feel free to reach out directly or apply today.

#React #TypeScript #FrontendDeveloper #SoftwareEngineer #DesignSystems #WebAccessibility #AIEngineering #ClaudeCode #DeveloperExperience #Hiring #RemoteJobs #FrontendJobs #TechCareers

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