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Hamilton Barnes 🌳

Principal Systems Administrator

Cheltenham
£56.3k – £84.5k/yr
Posted about 21 hours ago
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🚀 Principal Systems Administrator

📍 Hybrid Working | Compressed Working Week

💷 £56,300 - £84,500 + Bonus + Private Healthcare


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

You'll be responsible for:

  • 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 ISO20000 and ISO27001 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

Reasons to use Rodeo

I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.

Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

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Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.

P

Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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It searches the market for you

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Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

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Strong

Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.

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Strong

Only hits

No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.

Technology

  • VMware vSphere 8+
  • Citrix XenApp / XenDesktop / NetScaler
  • Microsoft Windows Server 2019/2022
  • Microsoft Exchange & Microsoft 365
  • Azure & AWS
  • Active Directory & Federated Trusts
  • MS SQL Server
  • Linux & Ansible
  • Dell & NetApp Fibre Channel Storage
  • DNS, DHCP, TCP/IP & MPLS

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What's on Offer?

  • £56,300 - £84,500 salary
  • Performance bonus
  • 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 eligible for SC Clearance, which requires sole UK nationality.

If you'd like to find out more, apply today or send me a direct message for a confidential conversation.

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Skills

VMware vSphere
Citrix XenApp
Citrix XenDesktop
NetScaler
Windows Server
Microsoft Exchange
Microsoft 365
Azure
AWS
Active Directory
MS SQL Server
Linux
Ansible
Dell Storage
NetApp Storage
TCP/IP

Location

Cheltenham, England, United Kingdom

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