Senior Systems Administrator

Senior Systems Administrator in Cheltenham (GL50) | Optimal Ltd Search Search These jobs were popular with other job seekers 3rd Line Infrastructure Support & App Packager, Hybrid Sanderson Recruitment Gloucester (GL1), GL1 £400 - £500 per day 1 month ago Infrastructure Engineer Morson Edge Hereford, Herefordshire £53.73 - 72.54 per hour 3 weeks ago Infrastructure Engineer JAM Recruitment Ltd Hereford (HR1) Up to £72.54 per hour 3 weeks ago Vulnerability Engineer (Find & Fix) Oscar Associates (UK) Limited Cheltenham (GL50) £40000 - £45000 per annum 2 weeks ago IT Support Engineer Oscar Associates (UK) Limited Cheltenham (GL50) £30000 - £60000 per annum 1 week ago IT Development Team Leader RE Group Gloucestershire £39.5k per year 2 hours ago NEW DevSecOps Engineer Richmond Square Consulting Limited Hereford (HR4) From £80,000 to £100,000 per annum Plus Bonus and Benefits 2 weeks ago IT Service Desk Technician - NPPV3 Cleared Data Careers Gloucestershire £180 - £190 per day 6 days ago Tour Operations Administrator Travel Trade Recruitment Cheltenham (GL52), GL52 £27000 - £30000 per annum + Benefits and FAM Trips 1 month ago Document Controller & Project Administrator Anderson Recruitment Barnwood, Gloucester (GL4), GL4 Up to £30,000 per annum 4 weeks ago 3rd Line Infrastructure Support & App Packager, Hybrid Sanderson Recruitment Gloucester (GL1), GL1 £400 - £500 per day 1 month ago Infrastructure Engineer Morson Edge Hereford, Herefordshire £53.73 - 72.54 per hour 3 weeks ago Infrastructure Engineer JAM Recruitment Ltd Hereford (HR1) Up to £72.54 per hour 3 weeks ago Vulnerability Engineer (Find & Fix) Oscar Associates (UK) Limited Cheltenham (GL50) £40000 - £45000 per annum 2 weeks ago IT Support Engineer Oscar Associates (UK) Limited Cheltenham (GL50) £30000 - £60000 per annum 1 week ago IT Development Team Leader RE Group Gloucestershire £39.5k per year 2 hours ago NEW DevSecOps Engineer Richmond Square Consulting Limited Hereford (HR4) From £80,000 to £100,000 per annum Plus Bonus and Benefits 2 weeks ago IT Service Desk Technician - NPPV3 Cleared Data Careers Gloucestershire £180 - £190 per day 6 days ago Tour Operations Administrator Travel Trade Recruitment Cheltenham (GL52), GL52 £27000 - £30000 per annum + Benefits and FAM Trips 1 month ago Document Controller & Project Administrator Anderson Recruitment Barnwood, Gloucester (GL4), GL4 Up to £30,000 per annum 4 weeks ago Senior Systems Administrator Optimal Ltd Cheltenham (GL50) Permanent Published: 1 week ago From £35,000 to £40,000 per annum + 10% Bonus + Benefits Senior Systems Administrator Optimal Ltd System Administrator/Head of IT | Infrastructure, Networks & End-User Support | Linux & Microsoft Location: Cheltenham, Gloucestershire (Onsite) Package: £35,000 - £40,000 + 10% Bonus + Benefits Eligibility: Must be able to obtain and maintain UK Government SC clearance - ILR or British Passport Please only apply if you have commercial experience with all of the following ?? • Managing internal IT systems across desktop, server, network and cloud environments • Administering both Linux and Microsoft operating systems • Using network and systems management tools • Implementing and maintaining strong security controls across an IT estate • Installing, configuring and troubleshooting hardware, operating systems, networks and applications • Producing clear, accurate technical documentation and procedures The Role This is a hands-on System Administrator position in a well-established technical organisation that values innovation, quality and team culture. You'll own internal IT operations end-to-end in an onsite environment, managing infrastructure and security while supporting both internal staff and client-facing technical remediation work. Must-Haves • Experience managing internal IT systems (end-user, server, network and cloud) • Hands-on administration of Linux and Microsoft environments • Knowledge of network security and firewall technologies • Experience with ticketing systems and knowledge-base tools • Experience with MDM platforms • Ability to install, configure and troubleshoot hardware and software • Excellent communication skills and proactive, service-focused approach What You'll Be Doing • Manage and support internal IT systems, monitor health/stability, respond to alerts • Implement security controls and maintain compliance with internal standards • Assist clients in implementing technical fixes following assessments • Produce documentation, procedures and supporting materials • Support colleagues with day-to-day IT requirements • Contribute to continuous improvement initiatives Hands-On Experience With • Office, desktop, server and network administration • Linux and Microsoft operating systems • Infrastructure-as-a-service cloud platforms • Network security and firewall technologies • VPN / remote access solutions • Ticketing and knowledge-base systems • Mobile device management tooling • Hardware, operating system and network configuration Bonus Experience • Exposure to delivering technical remediation for clients • Experience with ISO-aligned processes (e.g. ISO27001) • Microsoft desktop or cloud certifications • Experience supporting or mentoring junior team members Important Notes • This is a fully onsite role in Cheltenham • Candidates must be eligible for and capable of holding UK Government Security Clearance (SC) • A hands-on role with active ownership of internal IT systems If you match the above criteria and would like a confidential discussion about the role, please get in touch. Similar Senior Systems Administrator Jobs Popular with Other Job Seekers 3rd Line Infrastructure Support & App Packager, Hybrid Sanderson Recruitment Gloucester (GL1), GL1 £400 - £500 per day 1 month ago Infrastructure Engineer Morson Edge Hereford, Herefordshire £53.73 - 72.54 per hour 3 weeks ago Infrastructure Engineer JAM Recruitment Ltd Hereford (HR1) Up to £72.54 per hour 3 weeks ago Vulnerability Engineer (Find & Fix) Oscar Associates (UK) Limited Cheltenham (GL50) £40000 - £45000 per annum 2 weeks ago IT Support Engineer Oscar Associates (UK) Limited Cheltenham (GL50) £30000 - £60000 per annum 1 week ago IT Development Team Leader RE Group Gloucestershire £39.5k per year 2 hours ago NEW DevSecOps Engineer Richmond Square Consulting Limited Hereford (HR4) From £80,000 to £100,000 per annum Plus Bonus and Benefits 2 weeks ago IT Service Desk Technician - NPPV3 Cleared Data Careers Gloucestershire £180 - £190 per day 6 days ago Tour Operations Administrator Travel Trade Recruitment Cheltenham (GL52), GL52 £27000 - £30000 per annum + Benefits and FAM Trips 1 month ago Document Controller & Project Administrator Anderson Recruitment Barnwood, Gloucester (GL4), GL4 Up to £30,000 per annum 4 weeks ago IT jobs IT jobs in Cheltenham Infrastructure jobs Infrastructure jobs in Cheltenham Jobs in Cheltenham Totaljobs About us Work for us Media centre Partners Jobseeker Jobs Jobseeker login Salary Planner Jobseeker help centre Career advice Recruiter Courses Advertise a job Recruiter login Contact us – recruiters Recruiter advice Recruit internationally Let's connect Apps Privacy policy Terms and conditions Cookies Compliance Accessibility The Stepstone Group UK Ltd © 2026