UI Developer

• Salary based on B2B contract (via Devire) 180-200 pln/h net+vat
• Long-term employment
• Private HealthCare
• Sports card 
• Life insurance
• Working for a leading corporation with a stable market position
• Working in the international environment
• Onsite work (3 days a week office work) with supportive and positive environment

• 5-10 years of experience with React, TypeScript, JavaScript, HTML, and CSS.

• Experience building component libraries, design systems, or large-scale UIs.

• Good understanding of accessibility (WCAG) and frontend testing.

• Experience with CSS-in-JS, Sass, or modern styling architectures.

• Experience working in large codebases or monorepos.

• Hands-on experience with Claude Code or similar agentic coding tools.

• Ability to evaluate AI-generated code and improve AI-assisted development workflows.

• Strong debugging, problem-solving, and collaboration skills.

Tech stack

• Languages: TypeScript, JavaScript

• Frontend: React, Angular (maintenance)

• Styling: CSS-in-JS, Sass

• Build: Bazel, Monorepo

• Testing: React Testing Library, Cypress

• AI: Claude Code and agentic coding tools

Responsibilities

• Build and maintain reusable, production-ready React components.

• Improve component APIs, theming, styling, tooling, and developer experience.

• Diagnose and fix issues across the component library and build system.

• Write and maintain automated tests with React Testing Library and Cypress.

• Ensure components meet accessibility, performance, and design system standards.

• Use Claude Code and similar AI coding agents as part of daily development.

• Design and improve UI-focused AI agent skills, prompts, and workflows.

• Collaborate with design, platform, and engineering teams.