£450 p/d inside IR35 | Long-term Onsite in Leicester or Hursley | 5 days per week onsite We are recruiting an SC-cleared Windows System Administrator to join a wider engineering team supporting a large, multi-year programme within a secure, operationally critical public sector environment. The role will support a cross-functional project team, with a focus on Windows configuration, systems management, SCCM packaging and SCOM activity. This is a fully onsite role based in either Leicester or Hursley, suited to someone comfortable working in a structured engineering environment where reliability, resilience and service continuity are key. Key Responsibilities Provide Windows systems administration support across a secure programme environment Configure, maintain and troubleshoot Windows-based systems Support software packaging activity using SCCM Work with Microsoft System Center tooling Support and manage SCOM activity across the environment Contribute to Windows Server build activity where required Work closely with engineers and wider project stakeholders Help maintain operational stability across the Windows estate Key Experience Strong Windows system administration experience Proficient in Windows configuration and troubleshooting Understanding of software packaging in SCCM Knowledge of Microsoft System Centre Familiarity managing SCOM PowerShell scripting experience would be beneficial Familiarity with Windows Server builds would be beneficial Must have 5 years' unbroken UK residency Must hold BPSS and SC. Must either hold NPPV3 or be willing to undergo