Frontend Engineer (React, Typescript)

What we offerWork in a Scandinavian culture built on logic, trust, and open dialogue.Health and sports benefits tailored to your needs.Speed Coaching – short sessions designed to provide new perspectives and solutions.Sports training, an internal team, and opportunities to take part in competitions. Key areas of the job:Advanced business logic on the frontend side - working with large data volumes, complex transformations, algorithmic operations and performance optimization; this is not a CRUD application - algorithmic correctness is a daily challengeBuilding and maintaining React components following the Atomic Design methodology, state management with Redux, integration with REST APIs and external desktop toolsOwnership of software engineering - development is done after the business logic is recognized and mapped What you need to join us:Must have:React (advanced level) and TypeScript (advanced level) - hooks, Context API, performance optimization, typing of components, hooks, Redux actions and reducers, generic typesRedux - deep understanding of the architecture and three core principles, react-redux integration via hooks (useSelector, useDispatch), state immutability, selector-based optimizationComplex business logic implementation on the client side - asynchronous operations, REST API integration, architectural thinking about data flow, algorithmic performance with large datasetsAtomic Design and MVC pattern - designing scalable and modular component structures, separation of logic from the view layerEngineering best practices - SOLID, unit/integration tests (mandatory code coverage), code reviews, Git, ownership of full epics and understanding business goals behind featuresEnglish B2+Ability to perform work in Poland (citizenship, residence permit, visa, etc.)Nice to have:Background extending beyond pure frontend (e.g., backend or systems-level programming experience)Experience or natural inclination for manual testing - finding edge cases and breaking applications (the team shares QA responsibilities)Experience with end-to-end testing frameworksFamiliarity with embedding frontend UI as a panel within a desktop application