Frontend Developer FinTech
At Infotree Global Solutions · Warsaw, Poland
- Engineering
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Where you’ll work
Hybrid, based in Warsaw
“Warsaw, Poland”
From the job board field.
The job board lists it as hybrid.
Hybrid means some days in the office. The listing says how many, and where.
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- Posted
- 21 September 2026
- First seen by us
- 15 October 2026
- Last checked
- 17 hours ago
Job description
From Infotree Global Solutions’s job post, as they wrote it.
About the role:
We are looking for a Frontend Software Engineer to join a team responsible for building and maintaining a large-scale, React-based component library used as the shared design system and UI foundation across the firm.
You will work on production-grade UI components, developer tooling and accessibility, while helping introduce and scale AI-driven engineering workflows across the component library.
Read the full description
Key Responsibilities:
* Design, build, and maintain reusable React UI components.
* Develop and evolve a large-scale component library/design system.
* Diagnose and resolve issues across components, theming/styling and build tooling.
* Write and maintain comprehensive automated tests.
* Ensure components meet accessibility standards, including WCAG.
* Collaborate closely with Product Design, UX, and Platform Engineering teams.
* Use AI coding agents such as Claude Code as part of the daily development workflow.
* Design and ship UI-focused AI agent skills and workflows.
* Evaluate and improve AI-agent prompts, skills, guardrails, and developer workflows.
* Contribute to engineering standards, tooling, and architectural improvements.
Technology:
* Languages: TypeScript, JavaScript
* Frontend: React, Angular
* Styling: CSS-in-JS, Sass
* Build / Monorepo: Bazel
* Testing: React Testing Library, Cypress
* AI tooling: Claude Code and similar agentic coding tools
Must Have:
* Strong commercial experience with React and TypeScript.
* Experience building reusable UI components, component libraries or design systems.
* Experience working in a large or complex frontend codebase.
* Good understanding of modern CSS/styling architectures, ideally CSS-in-JS.
* Practical knowledge of web accessibility / WCAG.
* Experience with automated frontend testing, ideally React Testing Library and/or Cypress.
* Comfortable working with developer tooling, build systems, or monorepos.
* Experience using AI coding agents / agentic development tools, such as Claude Code, Cursor, GitHub Copilot, or similar.
* Ability to work effectively in a highly collaborative engineering/design environment.
Nice to Have:
* Experience with Bazel.
* Angular experience, particularly maintaining legacy applications.
* Experience contributing to an established enterprise design system.
* Experience designing AI-agent skills, prompts, or guardrails.
* Experience with monorepo architecture.
* Strong understanding of frontend performance and browser fundamentals.
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