Full-time Posted June 25, 2026
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Job Description

Principal Site Reliability Engineer Location: Reading- Hybrid working (2-3 days onsite) Salary: £95,000 (plus bonus) Clearance: Active SC clearance required This role is a senior technical role focused on ensuring large-scale software systems and platforms are reliable, scalable, and performant. Principal SREs sit at the top of the engineering ladder, combining deep software and infrastructure expertise to build the systems, tooling, and practices that keep critical platforms running at scale. They are hands-on engineers who also lead technically, setting standards and mentoring others rather than managing people We have an exciting opportunity for a Principal Site Reliability Engineer to join a major UK critical infrastructure programme delivering large-scale cloud-native transformation at enterprise scale. In this role, you'll be embedded within a high-performing Cloud Pod as a senior technical contributor, working alongside experienced engineers to build, maintain, and improve platf...

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