Front-end Engineer - Freelance/Service Agreement - Poland-based
Summary
Build internal tools for FlixTrain’s fleet operations using React, TypeScript, and modern frontend tooling.
Open to B2B contractors based in Poland.
Rate: 89—119 PLN/hour.
We are looking for a skilled Front-end Engineer for service agreement collaboration to cooperate with a team dedicated to automating and streamlining FlixTrain's operations - building internal tools that help manage the fleet more effectively, reduce manual processes, and increase productivity. This is a greenfield environment with plenty of room to shape new products from the ground up and explore innovative solutions for our internal users.
Scope of services
- Independent development and delivery of high-quality frontend features within a self-organized, cross-functional distributed team
- Building intuitive, responsive user interfaces with a focus on internal user experience
- Driving frontend architecture decisions and contributing to technical quality across teams through code reviews and collaboration
- Working with a modern tech stack: React, TypeScript, Vite with Module Federation, TanStack Router & Query, Zustand, Tailwind CSS, React Hook Form with Zod, Vitest, Storybook, React Testing Library, and Biome
Relevant expertise
- Profound understanding of Typescript and its ecosystem (package managers, bundlers, linters, etc.)
- Extensive knowledge of HTML and CSS
- Hands-on experience with React.js
- Experience writing tests and working with test runners such as Jest or Vitest, including UI/e2e testing
- Solid written and spoken English skills
- Experience working in an Agile setup
Collaboration model
- Cooperation based on a service agreement with independent delivery of agreed services and invoicing