IMS Core Engineer

Job Title: IMS Engineer Location: Reading (Hybrid) Role Overview Responsible for design, integration, and support of IMS core networks enabling VoLTE/VoWiFi services, ensuring high availability and service performance. Key Responsibilities Manage and support IMS nodes (CSCF, HSS/UDM, SBC, TAS) Troubleshoot SIP/Diameter call flows and perform RCA Support VoLTE/VoWiFi service delivery and optimization Handle L2/L3 incidents and ensure SLA adherence Lead upgrades, integrations, and new service rollouts Collaborate with RAN, Core, and vendor teams Required Skills Strong IMS architecture knowledge (SIP, Diameter, VoLTE call flows) Hands-on troubleshooting (Wireshark, traces) Experience with LTE/5G Core integration Linux/Unix; Scripting (Python/Shell preferred) Preferred Experience with vendors like Ericsson, Nokia, Huawei Exposure to UK operators such as Vodafone or BT Group Knowledge of NFV/Cloud (OpenStack/Kubernetes) ..... full job details .....