VodafoneThree - IT Technical Design Authority

Working hours: Full time 37.5 hours per week - Monday to Friday You'll shape and assure complex, secure platforms supporting public sector and Critical National Infrastructure customers, influencing technical strategy and leading solution design from concept through to live service. Working across secure hosting, virtualisation, cloud-enabled platforms, collaboration technologies, messaging services, and mission-critical infrastructure, you'll partner with customers, vendors, engineering, testing, and service teams to ensure successful delivery and operational acceptance. Act as the Technical Design Authority for secure customer programmes, owning technical design decisions throughout the lifecycle. Create and assure High-Level and Low-Level Designs (HLDs/LLDs). Provide technical leadership across design, build, test and service transition activities. Act as a trusted technical advisor to customers and key stakeholders. Ensure solutions meet security, resilience, operational and architectural standards. Support successful delivery by resolving technical issues and managing design changes. Proven experience in a Technical Design Authority, Technical Design, or Senior Systems Engineer role within complex IT or managed service environments. Current DV clearance or eligibility and willingness to undergo DV vetting Strong background in enterprise IT infrastructure and platforms, including: Windows, Linux (Redhat OpenShift), VMWare (Broadcom VCF) and messaging systems (Exchange). Experience designing and assuring customer facing solutions in highly-secure environments. Strong stakeholder management skills with the ability to challenge constructively and influence at senior levels Have a proven track record in IT, with Experience delivering customer facing solutions requiring formal acceptance and sign off. Be proactive, self-motivated, and be able to keep up with the rapid pace of ICT