Are you an Infrastructure Engineer who enjoys working on complex, secure technology environments where your work genuinely matters?We are supporting a major Defence programme, building and maintaining mission-critical infrastructure that underpins secure services across the Defence landscape. This is not a routine support role. You will be working in a highly secure environment, solving technical challenges, supporting critical systems, and contributing to a programme with real national importance.We are looking for experienced Infrastructure Engineers with strong Wintel and VMware skills, ideally gained within Defence, MoD, government, or similarly secure and regulated environments.This role would suit someone who enjoys hands-on engineering, problem-solving, and working closely with technical teams to deliver reliable, secure infrastructure services.This role is full time on site in the Hertfordshire area.What you will be doing:Build, configure, support, and maintain secure infrastructure across Wintel and VMware environments.Troubleshoot incidents and technical issues across servers, virtualisation, storage, and associated infrastructure services.Support infrastructure upgrades, patching, deployments, and service improvements.Work closely with architecture, networks, security, and application teams to deliver joined-up technical solutions.Maintain clear technical documentation, operational procedures, and configuration records.Ensure infrastructure services meet security, ..... full job details .....