Senior Specialist, FRMCS 5G Core System Design (Operational Telecommunications) | Senior Referent:in FRMCS 5G Core Systemdesign betriebliche Telekommunikation

Deutsche Bahn AG

Frankfurt am Main, Hessen, Deutschland
Published Oct 21, 2025
Full-time
Permanent

Job Summary

This Senior Specialist role focuses on the critical system design and continuous evolution of the railway's operational telecommunications platform, FRMCS (Future Railway Mobile Communication System), leveraging 5G Core technology. The successful candidate will be responsible for strategic planning of platform topology and technologies, defining capacity and functionality based on customer requirements. Day-to-day tasks involve evaluating system specifications for availability, performance, IT security, and cost-efficiency, while also analyzing and integrating international standards (3GPP, ETSI, UIC). A core responsibility is creating the system design for the 5G mobile radio system and the MC service layer, ensuring alignment with the overall telecommunications strategy. This position requires deep expertise in 5G Core architecture and strong conceptual skills, offering the opportunity to contribute significantly to the modernization of Germany's rail infrastructure within a highly flexible work environment.

Required Skills

Education

University or Technical College Degree in Engineering (Electrical Engineering, Communications Technology), Information Technology, Industrial Engineering, or a comparable field.

Experience

  • Long-term professional experience in the required area (as an alternative to a degree)
  • Defining architecture and design in the 5G Core area
  • Experience in defining specifications for the service platform (IMS/MCx)
  • Experience in representing technical specifications to other departments and management
  • Broad technical understanding of deployed technologies

Languages

German (Fluent)

Additional

  • Permanent employment contract; Location is flexible within Germany ('Wo du Willst-Job'), with Frankfurt (Main) listed as a potential official office.