Senior Engineer Infrastructure Operations Linux
PAYE Rate: £469.98 per day
Umbrella Rate: £602.83 per day
Contract | Inside IR35
Duration: 6 months initially (with potential extensions)
Hybrid – Milton Keynes (approx. 60% onsite)
We’re supporting a high-profile government-aligned organisation delivering secure, mission-critical infrastructure services. They are looking for an experienced Senior Infrastructure Engineer (Linux SME) to join their specialist infrastructure team.
This is a hands-on role operating within a secure, enterprise-scale environment where stability, performance and security are paramount.
The Role
As a Linux Subject Matter Expert, you will:
* Provide expert-level support across enterprise Linux platforms
* Maintain and enhance secure, assured infrastructure environments
* Support both BAU operations and project-based deliverables
* Lead conversations around infrastructure automation and environment growth
* Build and maintain development environments
* Containerise applications and services
* Support modern deployment approaches alongside traditional platform operations
* Work closely with cross-functional infrastructure specialists
* Produce and maintain high-quality operational documentation
* Contribute to knowledge transfer across the team
You’ll be operating within structured service management and security frameworks, so experience in highly regulated environments is essential.
Required Experience
* Strong Linux system administration (enterprise level)
* Experience supporting secure production platforms
* Containerisation experience (e.g. Docker or similar)
* Building and maintaining development environments
* Automation and infrastructure improvement initiatives
* Working within formal IT service management frameworks
* Strong troubleshooting and performance optimisation skills
Desirable Certifications
One or more of the following:
* RHCSA (Red Hat Certified System Administrator)
* RHCE (Red Hat Certified Engineer)
* LFCS (Linux Foundation Certified System Administrator)
* LPIC-1 or LPIC-2
Security & Eligibility
Due to the nature of the work:
* You must be a British national (single or dual nationality)
* You must have resided in the UK for at least 2 of the last 5 years
* You must be eligible to obtain SC (Security Clearance)
Clearance does not need to be held currently, but you must be able to pass vetting (6–8 week process).
Working Arrangements
* Hybrid role – minimum 60% onsite at Hanslope Park (Milton Keynes)
* Occasional travel within London/Milton Keynes area
* Standard professional working week (37.5+ hours)
* On-call rota participation required
* Minimum 6 shifts per 28-day cycle
* Flat fee paid per shift
This is an opportunity to work within a highly secure, nationally significant environment where infrastructure resilience and security truly matter.
If this role is of interest and you meet the above criteria, then please apply immediately