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

Flix; Wrocław; On-site; PLN 123,000 - 164,000; Part time

Job summary

Flix is seeking a Front-end Engineer for a service agreement with B2B terms, based in Poland. You will work in a greenfield environment to build internal tools that streamline FlixTrain operations and reduce manual processes.

The role requires deep React and TypeScript expertise, strong HTML/CSS skills, and experience with modern tooling such as Vite, Module Federation, Tailwind, Storybook, and Vitest. English proficiency and Agile collaboration are essential.

Qualifications

• Proficient with TypeScript and ecosystem.
• Strong HTML and CSS knowledge.
• Hands-on React.js experience.
• Experience with Jest or Vitest and UI/e2e testing.
• Good written and spoken English.
• Experience in Agile environments.

Responsibilities

• Develop and deliver high-quality frontend features within a self-organized, cross-functional team.
• Build intuitive, responsive UIs for internal users.
• Influence frontend architecture and participate in code reviews to raise quality.
• Collaborate across teams using a modern React/TypeScript stack.

Skills

TypeScript

HTML

React.js

Jest/Vitest

Agile

English

Tools

Vite

Module Federation

TanStack Router

Tailwind CSS

Storybook

Vitest

Biome

Job description

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