Backend Developer – App BFF / Integration

Manning Global, an Internationally renowned staffing and managed services organization specializing in providing staffing solutions for leading corporations in AI, IT & Telecoms, Engineering, Digital Media, Automotive and Renewable Energy is hiring for its own expanding team a Backend Developer - App BFF / Integration to join its managed services project in Germany. Position/Title: Backend Developer - App BFF / Integration Employment: Full time Contract Type: Fixed-Term (24 Months) Start Date: October/2026 Location: Germany - Hybrid - München Salary Framework: 65 000.00 EUR min per year - 85 000.00 EUR per year max dependent upon experience Contact: Davor Molnar on: 49 (0) 89 23 88 98 63

Key

Responsibilities: Develop and maintain backend services and APIs using Java and Spring Boot Implement App BFF functionality and integrations with backend systems and APIs Implement authentication, authorization and secure service-to-service communication Contribute to automated testing, code reviews and continuous improvement of code quality Analyze and resolve backend and cross-layer defects, including issues across the App BFF, APIs and downstream systems Contribute to and maintain CI/CD, application deployment and operational topics for backend services Support production stability, monitoring and troubleshooting Collaborate closely with Product Owners, Technical Leads, Architects, React Native developers and other backend/integration teams Experience/Qualifications: 4+ years of professional experience in backend software development, including 3+years of hands-on experience with Java and Spring Boot Experience in digital industries with complex customer journeys such as telecommunications, banking, insurance, utilities or e-commerce Strong experience designing and implementing REST APIs and backend integrations Experience working with Backend-for-Frontend (BFF) or comparable API aggregation and integration layers Good understanding of authentication and authorization concepts such as OAuth2 and OIDC Experience working with distributed systems and complex backend landscapes Experience building performant, stable and resilient backend services Experience with automated testing, Git and CI/CD Good understanding of application security, logging and monitoring, with experience using observability tooling such as ELK Stack or comparable solutions Experience with AI-assisted software development across the SDLC, for example for coding, unit test generation, refactoring, debugging or developer productivity, is a plus Good analytical and problem-solving skills Experience working in agile and international development teams Proficiency in English; German is a plus