Mobile Voice Core Engineer
Job Ref: LF
40932
This is a senior engineering opportunity within a Mobile & IP function responsible for delivering high availability across CS, EPC and IMS environments. The successful candidate will act as a subject matter expert for voice and IMS services, ensuring operational resilience and service optimisation!
Location
Duties for this role include, but are not limited to:
- Operating and maintaining IMS, CS and EPC components in line with KPIs and SLAs.
- Performing configuration, upgrades and patching of mobile core network elements.
- Monitoring and optimising capacity and performance metrics.
- Troubleshooting complex signalling protocols including Diameter, SIP, SS7 and HTTPS.
- Managing IMS platforms and SIP-based services for mobile and fixed voice.
- Supporting Cloud Voice, FTTH voice and Microsoft Teams Operator Connect services.
- Supporting roaming services and ensuring IREG compliance.
- Managing SIP carrier interconnect deployments and troubleshooting.
- Supporting value-added voice services and voicemail platforms.
- Contributing to core network expansion, capacity planning and vendor evaluations.
- Supporting security compliance and incident response within the domain.
- Participating in an on-call rota and maintaining regulatory compliance.
Skills / Qualifications
The ideal candidate will have strong experience across 2G, 4G and 5G mobile core environments, with hands-on expertise in IMS components and mobile core nodes. A solid understanding of SIP, Diameter, SS7 and GTP protocols is essential, alongside knowledge of IP networking and telecoms virtualised environments. Strong communication skills, structured problem-solving ability and a proactive approach to learning new technologies are key. Candidates must be comfortable working collaboratively across technical teams and external partners.
How To Apply
For a full job description or further information on this role please call 711188, or email [email protected].If you wish to apply for this role, please submit your CV via the Apply Now button below.