(Senior) Full Stack Developer - Web (f/m/d)

Join us as a (Senior) Full Stack Developer - Web (f/m/d) in Berlin Our Story We are looking for a Senior Full Stack Developer (Web Platform) to help shape and scale thinkcell’s web platform and enable multiple teams to efficiently manage and publish content. This is not a role for someone who only wants to work within a fixed web stack or maintain existing templates. We are looking for a web engineer who enjoys solving complex technical problems, making sound architectural decisions, and building systems that remain robust and maintainable as requirements evolve. You will work across frontend and backend, improve the technical foundation of our web platform, and help us build scalable solutions that enable our teams to manage and publish content. Along the way, you will collaborate closely with stakeholders across design, marketing, product and engineering but with strong ownership over technical quality, long-term maintainability, and the overall direction of the platform. What you will do Design, build, and evolve our web platform features across front-end and CMS back-end. Solve complex technical problems in a pragmatic way, balancing speed of delivery with long-term maintainability Drive architectural improvements that make our web ecosystem more robust, scalable, and easier to work with Build and improve our back-end functionality in PHP and Laravel for integrations, dynamic features, and internal tooling Extend and optimize our CMS and publishing workflows to support efficient content operations without compromising technical quality Improve performance, Core Web Vitals, accessibility, and technical SEO foundations across the platform Work on the evolution of our current web architecture, while also challenging existing