Packet Core Design Engineer (4G / 5G SA)We are looking for a Packet Core specialist to lead the design and integration of a mission-critical Emergency Services Network. This role focuses on the transition from 4G legacy systems to a cloud-native 5G Standalone (SA) architecture.The Essentials4G Design: Deep knowledge of MME, GW-C, GW-U and interfaces (S1-MME/U, S6a, S5/S8, SGi).5G SA Design: Expertise in SBA architecture and N-interfaces (AMF, SMF, UPF).Cloud-Native: Experience with NFVI and Kubernetes (containerised systems management).Deliverables: Ownership of HLD/LLD, integration, and configuration management.Networking: Strong understanding of IP networks and core protocols.The MissionYou will be responsible for the high-level and low-level design of core components, supporting critical test activities, and troubleshooting complex issues to ensure the reliability of emergency communication services.ApplyIf you have a strong 3GPP background and are ready to work on a high-impact national project, please apply with your updated CV.Randstad Technologies is acting as an Employment Business in relation to this vacancy. ..... full job details .....