Backend Developer – App BFF / Integration

Manning Global AG; München; Vor Ort; EUR 65.000 - 85.000; Vollzeit

Zusammenfassung

Manning Global AG is hiring a Backend Developer – App BFF / Integration to join its managed services project in Germany. You will develop and maintain backend services and APIs using Java and Spring Boot, focusing on App BFF functionality and secure integrations with downstream systems.

The role requires 4+ years in backend development, 3+ years with Java/Spring Boot, REST API design, and experience in Agile, with good English; German is a plus. Start Oct 2026, full-time, fixed-term (24 months).

Qualifikationen

• 4+ years of professional backend development experience.
• 3+ years with Java and Spring Boot.
• Strong experience designing REST APIs and backend integrations.

Aufgaben

• Develop and maintain backend services and APIs using Java and Spring Boot.
• Implement App BFF functionality and integrations with backend systems and APIs.
• Ensure authentication, authorization, and secure service-to-service communication.

Kenntnisse

Java & Spring Boot

REST APIs

BFF integrations

OAuth2/OIDC

CI/CD

Observability/ELK

AI-assisted development

Agile / international teams

English

Tools

Git

Jobbeschreibung

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

Salary Framework

65 000.00 EUR min per year - 85 000.00 EUR per year max dependent upon experience

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