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Site Reliability Engineer
Job in
Milton Keynes, Buckinghamshire, MK1, England, UK
Listed on 2026-02-16
Listing for:
CBSbutler Holdings Limited trading as CBSbutler
Full Time, Contract
position Listed on 2026-02-16
Job specializations:
-
IT/Tech
Systems Engineer, Cloud Computing
Job Description & How to Apply Below
Title:
Site Reliability Engineer
Location:
Milton Keynes/Hybrid (3 days on site)
Duration: 6 months contract
Rate: £390 per day inside ir35
Role
Description:
Join a leading global IT consultancy and digital transformation organisation at the forefront of cloud, automation and secure platform engineering. We're looking for a Kubernetes-first engineer who wants to own and evolve a modern, enterprise-scale platform spanning AWS, Azure and on-prem. This is a hands-on role with real influence over reliability, security and architecture.
Responsibilities:
Operate and enhance our Kubernetes platform across AWS, Azure, and on prem.
Lead incident response, problem management, and root cause analysis.
Deliver cluster lifecycle work: upgrades, patching, node pools, CNI/CSI, ingress, and Rancher operations.
Own observability, dashboards, alerting, and SLOs/SLIs.
Implement Git Ops (Fleet) and reduce toil through automation and strong governance.
Apply secure API gateway and WAF patterns.
Work with distributed system patterns, including event brokers and asynchronous messaging.
Maintain security posture: CVE remediation, GRC controls, scanning pipelines.
Required Skills:
Deep knowledge of Kubernetes, Rancher, Git Ops, Linux, and cloud networking.
Understanding of API gateway and WAF patterns.
Experience with distributed systems and event driven architectures.
Strong automation/scripting (Python, Go, Bash, Power Shell, .NET).
IaC:o Terraform for foundational/bootstrap cluster provisioning.
o Crossplane as an orchestration layer (leveraging Terraform providers).
Ability to work securely within PCI DSS / GDPR patterns.
CI/CD:
Concourse, Git Hub Actions, Azure Dev Ops.
Observability:
Grafana, Prometheus, Jaeger/Tempo, Cloud Watch, Loki, Open Telemetry.
Nice to Have:
AWS operational experience.
Service mesh (Istio/Kuma).
Hybrid cloud experience (AWS + Azure + on prem).
Payments or regulated industry background.
If you are interested in this role or wish to apply, please feel free to submit your CV
Additional Information / Benefits
inside ir35
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