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