Senior Backend Developer (all genders)

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

A continuación, encontrará un desglose completo de todo lo que se requiere de los posibles candidatos, así como la forma de presentar su candidatura. ¡Mucha suerte!
What we offer

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• 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
  

What you do

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• Design and development of scalable backend systems and services using Java and Spring Boot
  
• Building and maintaining REST and GraphQL APIs for modern web applications and digital platforms
  
• Designing and implementing microservice architectures with a focus on scalability, resilience and maintainability
  
• Integration of external systems, databases and third‑party services
  
• Ensuring high performance, security and reliability of backend services
  
• Close collaboration with frontend developers, DevOps, UX/UI design and project management in agile environments (Scrum/Kanban)
  
• Continuous improvement of code quality, architecture and development processes
  

What you bring along

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• 5+ years of professional xqbhyrx experience as a backend developer with Java and Spring Boot
  
• Strong experience in designing and developing RESTful and/or GraphQL APIs
  
• Hands‑on experience with microservice architectures and distributed systems
  
• Good understanding of software architecture, clean code principles and backend design patterns
  
• Experience with CI/CD pipelines, version control (Git) and modern development workflows
  
• Strong problem‑solving skills, ownership mindset and team‑oriented working style
  
• Very good written and spoken German or English skills