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).

If you are considering sending an application, make sure to hit the apply button below after reading through the entire description.

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 experience

Essential Technical Skills

Ericsson Platforms (must have):

DSC IPSTP HLR HSS Nokia Platforms (must have):

Nokia SDM experience VNF and/or CNF experience (either acceptable) Exposure to subscriber migration (vendor‑to‑vendor or like‑for‑like) xehkeey General Core Competencies

Strong signalling knowledge Diameter routing & signalling protocols Core network design experience Traffic migration & integration design Ability to independently produce reliable HLD/LLD artefactsTo apply, please submit latest CV