Salary: £30,000 - 70,000 per year Requirements: Proven experience operating as a Technical Design Authority, Solution Architect, or Senior Technical Lead within secure or government environments Strong knowledge of HMG ICT, network, and documentation standards Deep technical understanding of solutions built using VMware (Broadcom VCF) Experience with Linux, including RedHat OpenShift Proficiency in Microsoft Windows technologies, including Active Directory, RDS, and Group Policy Familiarity with Microsoft Exchange and Privileged Access Management Understanding of auditing and logging policies Knowledge of backup, storage, and IP networking Experience supporting live services, including patching, lifecycle management, and operational assurance Strong stakeholder engagement skills, with the ability to communicate complex technical concepts clearly to customers and non-technical audiences Responsibilities: Act as the primary technical point of contact for the customer, handling technical queries and providing authoritative guidance Own and maintain the High-Level Design (HLD) and Low-Level Design (LLD), ensuring designs are kept up to date throughout the service lifecycle Provide technical oversight and assurance across solution design, build, and operational phases Liaise closely with the Service Lead, contributing to and attending regular customer meetings covering overall service delivery Ensure the virtual VBSE delivery team has the technical direction, access, and resources required to deliver effectively Oversee technical standards, patching, updates, and configuration management to ensure the platform remains secure and compliant Ensure alignment with HMG ICT, security, and documentation standards Support risk management, design decisions, and technical change control Technologies: Active Directory Architect ICT Support Linux Network OpenShift Security VMware Windows More: We are seeking an experienced Technical Design Authority (TDA) to act as the primary technical interface between our delivery team and the customer for a secure internal messaging platform. This role involves providing technical ownership and governance across the full solution lifecycle, ensuring the platform is designed, delivered, and maintained in line with customer expectations, security standards, and architectural best practice. The position is based in Hampshire, on-site for a minimum of four days per week, with an initial contract length of six months, extendable. We offer a competitive rate and strong collaborative work environment. last updated 4 week of 2026