08/06/2026
Contractor
Network Solution Design Authority (5G Core/IMS) Contract: 3 months (Outside IR35) Rate: £480/day Location: Hybrid Overview We are seeking an experienced Network Solution Design Authority to lead the design and delivery of complex telecom network solutions. This role requires a strong blend of core network expertise and broader multi-domain knowledge , with the ability to shape solutions from early concept through to implementation. Key Responsibilities Act as design authority across network initiatives, ensuring alignment to strategy and architecture principles Assess early-stage ideas and project briefs , defining architecture where not yet established Translate business needs into clear business and technical requirements Lead end-to-end solution design , supporting delivery through to implementation Collaborate with cross-functional teams to ensure scalable, robust solutions Core Experience (Essential) Strong design experience in one or more of the following: 5G Core/Mobile Packet Core (EPC) IMS/VoLTE/Voice Core Subscriber platforms (HSS/UDM) Messaging or OSS (desirable) Additional Experience (Essential) Proven experience across at least one additional network domain (eg voice, data, IP, service delivery), demonstrating a broad, cross-domain understanding Desirable Exposure to RAN design/architecture Experience with fixed-line networks, FWA, SD-WAN, or enterprise connectivity solutions Profile Strong solution design authority/architect-level experience Able to work from concept through to delivery in ambiguous environments Confident engaging both technical and business stakeholders