Senior JavaScript Developer

Role Overview

• Architecting and implementing robust frontend applications using React, TypeScript, and modern tooling.
• Building and maintaining component libraries with a focus on reusability, accessibility, and performance.
• Developing backend services using Node.js and TypeScript
• APIs, server-side logic, and data layer.
• Building and maintaining CI/CD pipelines for our frontend and backend applications.
• Working on greenfield projects as well as evolving existing systems.
• Contributing to open source projects, or collaborating with the team building fun projects during our Open Fridays.

Requirements

• Strong experience with React and modern frontend architecture
• Strong TypeScript skills across frontend and backend
• Strong experience with Node.js for backend services and APIs
• Experience with state management patterns and libraries
• Solid understanding of web performance optimization
• Familiarity with testing strategies (unit, integration, e2e)
• Experience with CI/CD pipelines and build tooling
• Familiarity with containerization (e.g., Docker)
• Fluency in English is crucial for our international team.
• If you can sprinkle in some German, that’s a delightful bonus we appreciate.

Tech Stack

• Docker
• JavaScript
• Node.js
• Open Source
• React
• TypeScript

Benefits

• A competitive salary
• Flexible working hours and hybrid work (mainly from home, with one office day per week in Berlin or Cologne)
• Learning budget for conferences, courses, and books
• Choose the gear you like
• Relocation support if you’re moving to Berlin or Cologne
• Minimal meetings we take planning seriously and spend our time coding, not in meetings
• Web applications don’t build themselves, so we make sure to keep the office stocked with coffee, fruits, Club Mate & snacks.
• We hold regular team events — dinners, game nights, chess evenings, and board games at the office, plus seasonal whole-company events like go-kart racing and escape rooms.