Solution Lead / Chief Engineer - DV required - Outside IR35

Location: London (fully onsite)Duration: 12 month contractRate: 118ph LTD (Outside IR35)Clearance: Active DV required Role details:We are seeking an experienced Unified Communications (UC) Solution Lead to design, develop and deliver secure communication and collaboration solutions within highly regulated defence environments.The successful candidate will lead the architecture and integration of enterprise-scale Unified Communications platforms, enabling secure voice, video, messaging and collaboration services across complex and segregated network environments. This role requires a strong blend of technical leadership, stakeholder management and secure solution design expertise, with a particular focus on interoperability, resilience and information assurance. Responsibilities:Produce and own High-Level Designs (HLDs) and Low-Level Designs (LLDs) for Unified Communications solutions.Design scalable, resilient and secure voice, video and collaboration services aligned to customer requirements.Design and deploy secure cross-domain solutions (CDS), guards, and multi-level security (MLS) gateways that allow video, voice, and chat to flow securely between separate classified or isolated networks.Define end-to-end technical architectures coveringSIP and VoIP servicesTelephony and call routing platformsVideo Teleconferencing (VTC)Instant Messaging and Presence servicesCollaboration and productivity platformsEnsure designs adhere to defence security standards, accreditation ..... full job details .....