Senior Engineer Infrastructure Operations Linux

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