SBA are supporting our Telecommunication client, who are seeking an experienced Mobile Core Signalling Designer to support a major transformation programme across their Voice Core and Subscriber Data Management estate on an initial 6 month contract located in Reading (hybrid).The ideal candidate will have deep expertise in Ericsson signalling platforms and Nokia SDM, with hands-on experience designing migrations, integrations, and service deployments within mobile core architecture.This is a specialist technical role requiring genuine design experienceEssential Technical SkillsEricsson Platforms (must have):DSCIPSTPHLRHSSNokia Platforms (must have):Nokia SDM experienceVNF and/or CNF experience (either acceptable)Exposure to subscriber migration (vendor-to-vendor or like-for-like)General Core CompetenciesStrong signalling knowledgeDiameter routing andamp; signalling protocolsCore network design experienceTraffic migration andamp; integration designAbility to independently produce reliable HLD/LLD artefactsTo apply, please submit latest ..... full job details .....