Jobs
My ads
My job alerts
Sign in
Find a job Career Tips Companies
Find

Senior infrastructure administrator

Elmore
Optimal Ltd
£40,000 a year
Posted: 19h ago
Offer description

System Administrator/SysAdmin | Infrastructure, Networks & End-User Support | Linux & Microsoft
Location: Gloucestershire (Onsite)
Package: £35,000 - £40,000 + Meaningful 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

This is an excellent opportunity for a motivated System Administrator to join a well-established, highly reputable technical organisation that prides itself on innovation, quality and a close-knit team culture. Youll become a key part of a company that genuinely invests in its people, encourages new ideas, and gives you the autonomy to shape how internal systems evolve.
The role offers the chance to work in a modern, technology-driven environment where reliability, security and continuous improvement are at the heart of everything they do. Youll be hands-on across infrastructure, networks, platforms and end-user support, while also contributing to a growing technical service offering that helps clients strengthen their systems.
If youre looking for a role where you can take real ownership, work with modern technologies, and be part of a supportive team that values technical excellence - this is a great opportunity.

Required Background
Previous commercial experience in a System Administrator or IT Administrator role
Background in IT, computer science, information systems or equivalent hands-on experience
Experience supporting office, network, server and cloud environments
Familiarity with infrastructure-as-a-service platforms
Experience with:
Linux and Microsoft environments
Commercial ticketing systems
Wiki / knowledge-base platforms
Mobile Device Management (MDM) solutions
Network security and firewall technologies
Remote access technologies
Ability to identify and respond to security-related issues and incidents
Strong troubleshooting and diagnostic skills across hardware, software and networks

?? Very Important Notes
This is a fully onsite position based in Gloucestershire
Occasional travel to other UK client sites is required (fully expensed)
Candidates must be eligible for and capable of holding UK Government Security Clearance (SC)
This is a hands-on role with active ownership of internal IT systems (not suitable for remote-only or purely strategic profiles)
You will help maintain and document processes aligned to recognised standards

Must-Haves
Experience managing internal IT systems (end-user, server, network and cloud)
Hands-on administration of Linux and Microsoft environments
Experience with server, desktop, network and cloud support
Knowledge of network security and firewall technologies
Experience using ticketing systems and knowledge-base tools
Experience with MDM platforms
Ability to install, configure and troubleshoot hardware and software
Experience maintaining documentation, procedures and system records
Excellent communication skills and a proactive, service-focused approach

Bonus Experience
Exposure to delivering technical remediation or improvement work for clients following technical assessments
Experience collaborating with assessment or consultancy teams to turn findings into practical actions
Prior involvement with ISO-aligned processes (e.g. ISO27001)
Microsoft desktop or cloud certifications
Experience supporting or mentoring junior team members

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 and updates

What Youll Be Doing
Infrastructure & Systems Administration
Manage and support internal IT systems across the organisation
Monitor the health, stability and security of the IT estate and respond to alerts
Maintain performance and resilience of core internal platforms
Implement appropriate security controls and help ensure systems remain compliant with internal standards
Keep IT processes and procedures fully documented and up to date

Service Quality & Remediation Delivery
Assist clients in implementing technical fixes and improvements following technical assessments
Deliver hands-on technical remediation work where required
Produce documentation, templates and supporting materials for service delivery and reporting
Translate technical findings into practical, actionable remediation tasks
Provide clear, high-quality documentation for delivery, project management, sales activity and client needs

Collaboration & Stakeholder Support
Work closely with internal staff to support their day-to-day IT requirements
Liaise with technical teams to streamline delivery of remediation and improvement activities
Support leadership with continuous improvement initiatives across IT and related services
Contribute to the development of scalable processes and frameworks as service demand grows

What Theyre Looking For
A reliable, hands-on System Administrator with solid technical breadth
Someone comfortable owning internal IT operations end-to-end in an onsite environment
A problem-solver who enjoys getting into the detail of technical issues and seeing them through to resolution
A clear communicator who can support colleagues at all levels of the organisation
Someone organised, diligent and security-aware, with a strong sense of ownership and accountability
A motivated individual who values being part of a close-knit, onsite technical team

If you match the above criteria and would like a confidential discussion about the role, please get in touch.

TPBN1_UKTJ

Apply
Create E-mail Alert
Job alert activated
Saved
Save
See more jobs
Similar jobs
jobs Gloucestershire
jobs Elmore
jobs England
Home > Jobs > Senior Infrastructure Administrator

About Jobijoba

  • Career Advice
  • Company Reviews

Search for jobs

  • Jobs by Job Title
  • Jobs by Industry
  • Jobs by Company
  • Jobs by Location
  • Jobs by Keywords

Contact / Partnership

  • Contact
  • Publish your job offers on Jobijoba

Legal notice - Terms of Service - Privacy Policy - Manage my cookies - Accessibility: Not compliant

© 2026 Jobijoba - All Rights Reserved

Apply
Create E-mail Alert
Job alert activated
Saved
Save