https://jobs.co.uk/job/ot-system-administrator-yolk-recruitment--aa396ec5-a3a3-40f3-a052-9427c3da0e1a RSS feed for OT System Administrator at Yolk Recruitment. en-gb Sat, 25 Apr 2026 20:24:02 GMT https://jobs.co.uk/job/ot-system-administrator-yolk-recruitment--aa396ec5-a3a3-40f3-a052-9427c3da0e1a https://jobs.co.uk/job/ot-system-administrator-yolk-recruitment--aa396ec5-a3a3-40f3-a052-9427c3da0e1a Sat, 18 Apr 2026 11:51:56 GMT Location: Gwent | Salary: 450.00-450.00 Daily | Type: Contract | Operational Technology Systems Administrator/Analyst - 12 Months Contract- Day Rate 450 - 485 (Inside IR35) - Hybrid (1 Day a week South Wales) The Opportunity Yolk Recruitment Public Sector and Not-for-Profit team has partnered with a very unique nonprofit organisation who are undergoing a significant cyber and infrastructure uplift across their operational technology environment. We''re looking for a hands-on System Administrator with a strong focus on security, working across critical national infrastructure. What you''ll be doingSupporting a large-scale cyber programme aligned to regulatory standards (E-CAF)Managing and securing core infrastructure across:Windows and Linux serversSQL databasesCisco networksWAN and data centre environmentsDriving patching, vulnerability management and system hardening best practiceSupporting rollout and optimisation of security tooling including EDR and intrusion detectionIntegrating and maintaining Active Directory and identity governance processesSupporting incident resolution and maintaining service continuity across critical systemsContributing to secure system design, documentation and UAT processesWorking closely with internal security tea... Contract