Mobile Core Design Specialist - Contract - 6 months - London - Inside IR35My client, a leading global telecoms company is looking for an experienced Mobile Core/Packet Core Design Specialist to support a major programme within their core network team. This is a hybrid London-based role requiring strong 4G/5G core expertise.Key SkillsDeep understanding of 3GPP 4G andamp; 5G SA Packet Core standardsStrong knowledge of core architecture, protocols andamp; integrationExperience with 4G interfaces (S1-MME/S1-U, S4, S6a, S5/S8, SGi)Experience with 5G SA interfaces (N2/N3/N4/N6, SBA)Understanding of NFVI, VNFs/CNFs; Kubernetes desirableSolid IP Networking backgroundStrong troubleshooting and config management skillsRole OverviewContribute to HLDs/LLDs for MME, GW-C/U, AMF, SMF, UPFSupport integration with wider network architectureProvide troubleshooting across multi-vendor Packet CoreAssist with test support and configuration managementIf this sounds like something you''d be interested in, please apply with your updated ..... full job details .....