Job Title: Voice Signalling Designer - Ericsson Node and Nokia SDM Location: 6 months Salary/Rate:£420-£450 a day Start Date: End of March Job Type: Contract 6 months OverviewWe are seeking an experienced Signalling Design Engineer to join a high-performing signalling design team within a major telecoms environment. This is an opportunity to work on cutting-edge network evolution initiatives, including IMS, Legacy voice, and 5G standalone (5GSA), while influencing strategic design decisions across the business.Key ResponsibilitiesAct as a design authority within signalling-related projects, ensuring optimal delivery outcomesProduce high-level and low-level designs (HLD/LLD) for core voice network platformsSupport service design across:IP STPDSC (DRA/DEA)IMS and Legacy voice core nodesContribute to automated testing strategies for 5GSA and Legacy networks, improving testing efficiency and call flow validationPerform capacity planning, modelling, and dimensioning across network elementsEnsure all designs meet security, fraud, and regulatory requirementsCollaborate with vendors to:Produce and review Statements of Requirements (SoR)Assess Statements of Compliance (SoC)Review Scope of Work (SoW) and commercial proposalsSupport network evolution strategy (1-3 year roadmap) covering hardware, software, and capacityRequired Experience andamp; SkillsStrong experience in core network signalling design within telecoms environmentsHands-on experience with vendor platforms such as:Ericss