Frontend Engineer

We are looking for a Frontend Engineer to join our small, remote-first team building AI-driven services for Nordic customers. Your role will center on building the user-facing side of our platform, working closely with our backend team to create intuitive, responsive, and powerful user interfaces. We offer a flexible, laid-back culture, a B2B contract, and fully remote work with occasional travel to meet the team and clients.

PROJECT INFORMATION:

Remote work: Preferable hybrid work from Warsaw (2 days per week) but able to work fully remote

Project language: English

Business trips: Travels to Sweden

Project length: Long-term (initial contract for 12 months with annual extensions)

Start: ASAP

Assignment type: B2B

Remuneration: Up to 135 PLN/h

Core Stack:

• React & TypeScript for building a modern, type-safe, and scalable user interface.

• Modern CSS for styling and implementing design systems.

• State Management (Zustand, TanStack Query) for managing complex client-side and server-side state.

• Modern build tools (e.g., Vite, Webpack).

Responsibilities:

• Developing dynamic and responsive user interfaces (UI) based on a component-driven architecture.

• Consuming RESTful APIs and managing complex backend data structures.

• Handling asynchronous operations, loading states, and robust client-side error handling.

• Collaborating with backend engineers to define API contracts and data models.

• Implementing real-time updates via WebSockets or polling to ensure data synchronization.

• Designing and maintaining logging and diagnostic mechanisms for frontend-backend communication.

• Translating UX/UI designs into high-quality, production-ready code.

• Designing and executing unit, component, and end-to-end tests using Vitest/Jest, React Testing Library and Playwright.

Key Requirements:

• Proven experience in React with strong TypeScript/JavaScript skills.

• Solid expertise in consuming RESTful APIs and handling asynchronous data flows.

• Strong knowledge of component-based architecture and reusable UI design.

• Practical experience with real-time communication (WebSockets, polling).

• Ability to collaborate closely with backend engineers on API contracts and data structures.

• Hands-on experience in testing frameworks (Vitest/Jest, React Testing Library, Playwright).

• Strong understanding of UX principles and ability to deliver production-quality code from design.

• Knowledge of error handling, logging, and performance optimization in frontend applications.