Front-end Engineer - Freelance/Service Agreement - Poland-based

FlixBus; Kraków; On-site; PLN 138,000 - 248,000; Part time

Job summary

FlixBus in Kraków is seeking a Front-end Engineer for a freelance/service agreement to join the IT & Engineering team building internal tools that streamline operations.

You will work with React and TypeScript on a modern stack (Vite, Tailwind, Storybook) in an Agile environment, delivering high-quality UI, driving frontend architecture, and collaborating with a distributed team. This role offers room to shape new products and requires strong English communication.

Qualifications

• 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

Responsibilities

• 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

Skills

TypeScript

HTML/CSS

React.js

Testing (Jest/Vitest)

English

Agile

Tools

Vite

Module Federation

TanStack Router

TanStack Query

Zustand

Tailwind CSS

React Hook Form with Zod

Vitest

Storybook

React Testing Library

Biome

Job description

Front-end Engineer - (Freelance/Service Agreement)

City: Kraków
Department: IT & Engineering

Recruiter: Anna Symonenko

Share Job

We are looking for a skilled Front-end Engineer for service agreement collaboration. Our team is 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

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