Senior Infrastructure Engineer Linux, Windows, VMware Security and Patching Focus Location: Leeds (hybrid - 3 days per week onsite in Leeds) Rate: £350-£400 per day outside IR35 Start Date: Immediate Duration: 6 months (with potential extension) We''re looking for a hands-on Senior Infrastructure Engineer with deep experience across Linux, Windows Server, and VMware to join a forward-thinking engineering team tackling some of the most critical challenges in enterprise IT: security, patching, and technical debt. This isn''t just another BAU role. You''ll be instrumental in modernising legacy systems, automating patching pipelines, and hardening infrastructure to meet evolving compliance and security standards. What You''ll Be Doing Leading patching and remediation efforts across mixed OS environments. Identifying and resolving technical debt in legacy infrastructure. Supporting secure builds and configuration baselines for Windows and Linux platforms. Collaborating with platform and security teams to improve automation and compliance. Working with VMware environments (vSphere, ESXi) to optimise performance and reliability. Producing clear documentation and contributing to continuous improvement initiatives. What We''re Looking For Proven experience in enterprise infrastructure engineering (Linux, Windows Server, VMware). Strong understanding of security hardening, vulnerability management, and compliance frameworks (e.g. ISO 27001, Cyber Essentials). Hands-on experience ..... full job details .....