MediaMarktSaturn Plattform Services GmbH is seeking an experienced Frontend Engineer to shape our integral webshop from Barcelona. You will design, build, and maintain scalable React/TypeScript applications, focusing on performance, accessibility, and robust UI components.You will collaborate with product, design, and backend teams, own features end-to-end, and contribute to testing strategies with RTL and Playwright. Flexible working hours and international collaboration are offered.