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# Frontend Engineer

- **Company:** Fourbyte Gmbh
- **Location:** Köln, Germany
- **Salary:** €48,000.0 - €120,000.0
- **Contract:** Permanent contract
- **Skills:** Computer Animation, Spreadsheets, Software as a Service, Payment Systems, Mobile Application Software, PostgreSQL, Responsive Web Design, TypeScript, Virtualization Technology, Tailwind, ReactJS, Backend, Stripe, React Native, Front End Software Development, Api Design
- **Published:** September 8, 2026
- **Apply:** https://www.careerjet.de/jobad/def1b37914a99ff68c1e6f1c023b57b629

## About the Role

Must-have:

 * React / Next.js - dein Hauptwerkzeug
 * React Native (Expo) - für unsere mobile App
 * TypeScript und type-safe API Design (tRPC/oRPC)
 * Tailwind CSS Mastery und responsive Design
 * State-Management Systeme (TanStack Query, Zustand)
 * Auth + Authorization (Supabase Auth + PostgreSQL)
 * Auge für Details und Micro-Interactions
 * Erfahrung mit Design Systems - aufbauen und shippbar halten

Nice-to-have:

 * Payment-System Erfahrung (Stripe)
 * Erfahrung mit datenintensiven UIs (Virtualisierung, große Listen, Echtzeit-Updates)
 * E-Commerce oder SaaS Produkt-Erfahrung

## Description

* Datenintensive Interfaces bauen - Tabellen mit tausenden Zeilen, Echtzeit-Filter, komplexe Dashboards
 * Unsere mobile App in React Native (Expo) weiterentwickeln
 * Unser Design System aufbauen und konsistent halten
 * Performance optimieren - Virtualisierung, Lazy Loading, schnelle Ladezeiten
 * Eng mit Design und Backend zusammenarbeiten
 * Micro-Interactions und Animationen implementieren, die das Produkt lebendig machen


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