This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a (Senior) Product Engineer (Backend) based in  Germany. As a backend-focused Product Engineer, you’ll play a key role in building reliable, scalable SaaS products that directly improve the way frontline employees work. You’ll take deep ownership of backend systems while staying connected to the broader product and user experience. Working within a cross-functional product squad, you’ll collaborate with product managers, designers, and engineers across backend, frontend, mobile, and AI. The role encourages end-to-end ownership, from understanding user needs and shaping solutions to prototyping, shipping, and measuring impact. You’ll also use modern AI coding tools to expand your reach across unfamiliar parts of the technology stack. It’s an environment built around curiosity, adaptability, strong engineering judgment, and continuous learning. Accountabilities Build and maintain reliable, scalable backend services and product features using Kotlin or Java and modern web frameworks. Take ownership of features from initial user problem discovery through development, rollout, and evaluation of their impact. Work closely with product managers, designers, and engineers to translate ideas and user needs into high-quality shipped experiences. Contribute beyond the backend when needed, including web, mobile, infrastructure, and other parts of the product stack. Use AI coding assistants to navigate unfamiliar codebases, accelerate development, prototype solutions, and deliver well-structured changes outside your primary specialization. Explore user problems through prototypes, instrumentation, experimentation, and collaboration with product or customer-facing teams. Help evolve engineering practices toward more end-to-end, product-minded ownership and AI-enabled development. Contribute to reliable deployment and infrastructure practices, with