×
Register Here to Apply for Jobs or Post Jobs. X

Principal Systems Administrator

Job in Cheltenham, Gloucestershire, GL50, England, UK
Listing for: Hamilton Barnes ?
Full Time position
Listed on 2026-07-31
Job specializations:
  • IT/Tech
    Systems Administrator, Windows Server, Systems Engineer, IT Infrastructure
Salary/Wage Range or Industry Benchmark: 65000 - 90000 GBP Yearly GBP 65000.00 90000.00 YEAR
Job Description & How to Apply Below

What if your weekend started every Friday?

I'm recruiting on behalf of a global leader in defence and advanced technology, who are looking for an experienced Principal Systems Administrator to join their enterprise infrastructure team.

This is a fantastic opportunity to join an organisation delivering technology that supports some of the UK's most critical programmes, while enjoying a genuine work-life balance through a compressed working week, giving you every Friday off
.

As the technical lead within the team, you'll play a key role in designing, supporting and evolving secure enterprise infrastructure, providing technical leadership across complex projects and acting as the go-to expert for systems administration.

The Role
  • Providing technical leadership and subject matter expertise across enterprise infrastructure
  • Leading systems administration activities on complex projects and business-critical programmes
  • Installing, configuring, administering and troubleshooting Windows, Linux and virtualised environments
  • Supporting VMware, Citrix, cloud platforms and enterprise storage infrastructure
  • Driving continuous improvements across infrastructure, availability and performance
  • Supporting major upgrades, deployments and technology refresh projects
  • Working closely with vendors to resolve complex technical issues and implement new solutions
  • Maintaining secure, highly available systems in line with ISO
    20000 and ISO
    27001 standards
  • Participating in a 24/7 on-call rota supporting planned and emergency changes
  • Mentoring engineers and influencing technical decisions across the wider infrastructure function
Technology
  • VMware vSphere 8+
  • Microsoft Windows Server 2019/2022
  • Microsoft Exchange & Microsoft 365
  • Active Directory & Federated Trusts
  • MS SQL Server
  • Dell & Net App Fibre Channel Storage
  • DNS, DHCP, TCP/IP & MPLS
What's on Offer?
  • Compressed working week with every Friday off
  • Flexible hybrid working
  • Private healthcare
  • Excellent pension

    Ongoing technical training and development
  • The opportunity to influence architecture and technical direction
  • Long-term career progression within a globally recognised defence and technology organisation

This opportunity would suit experienced Principal Systems Administrators, Senior Systems Administrators, Lead Infrastructure Engineers, Platform Engineers, Infrastructure Engineers or Senior Systems Engineers looking to step into a highly technical leadership position.

Please note: Due to the nature of the projects, applicants must be a sole UK national.

#J-18808-Ljbffr
Note that applications are not being accepted from your jurisdiction for this job currently via this jobsite. Candidate preferences are the decision of the Employer or Recruiting Agent, and are controlled by them alone.
To Search, View & Apply for jobs on this site that accept applications from your location or country, tap here to make a Search:
 
 
 
Search for further Jobs Here:
(Try combinations for better Results! Or enter less keywords for broader Results)
Location
Increase/decrease your Search Radius (miles)
0
200
Filters
Education Level
Experience Level (years)
Posted in last:
Salary