Job Description

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 SOLE British national (no 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

Engagement Details

* Inside IR35 (Off-payroll rules apply)

* Engagement via PAYE or compliant Umbrella

* 30-day notice period

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