Junior / Advanced Backend Developer (Java) (all genders)

Do you want to build scalable backend systems and develop powerful APIs for modern digital platforms? Then you’re the perfect fit for our team – working with German corporate clients and global B2B market leaders!

• The chance to become part of a large, international agency group: approx. 350 great employees in Germany, a modern, customer-centric business model and a true New Work environment. As part of MSQ with a further 1500 colleagues, we offer an international perspective with offices and sister agencies in the UK, USA and Asia


• Flexible working environment: Hybrid or in one of our beautiful offices in Mainz, Ludwigsburg or Barcelona


• Agile organization: Self-organized teams, extensive onboarding, personal buddy and lots of support from experienced colleagues


• Work & life balance: job bike leasing, Smart'n'fit weeks, fitness and self-care offers via EGYM Wellpass


• And of course: modern hardware, well-equipped tool landscape, company pension scheme, further training budget, in-house training, company events, drinks flat rate and good coffee

• Development and maintenance of backend services using Java and Spring Boot


• Implementation and further development of REST and GraphQL APIs for modern web applications


• Support in building microservice-based architectures


• Integration of databases and external systems


• Close collaboration with frontend developers, UX/UI designers and project management in agile environments (Scrum/Kanban)


• Writing clean, maintainable and well-documented code


• Supporting testing, debugging and optimization of backend services

• 1–3 years of professional experience in backend development with Java (or strong project experience)


• Basic knowledge of Spring Boot and API development (REST or GraphQL)


• Interest in microservices and modern backend architectures


• Understanding of clean code principles and software development best practices


• Familiarity with Git and modern development workflows


• Motivation to learn, grow and take ownership in a collaborative team


• Good written and spoken German or English skills