Principal Site Reliability Engineer Location: Woking / London (Hybrid) Salary: £85,000 - £100,000 We're looking for a Principal SRE to lead the design and delivery of scalable, cloud-native platforms supporting critical UK services. You'll work in collaborative Cloud Pods, combining hands-on engineering with technical leadership. What you'll do Build and operate reliable, scalable platforms using GitOps Drive automation, observability, and resilience (error budgets, SLOs) Work in Agile teams focused on customer outcomes Mentor engineers and champion SRE best practices Contribute to platform strategy and continuous improvement Take part in an on-call rota for live services What you'll bring Proven experience in Site Reliability Engineering leadership Strong skills in Kubernetes / OpenShift Experience across multi-cloud or hybrid environments Knowledge of tools like Istio, Prometheus, Grafana, ArgoCD/FluxCD Experience with Infrastructure as Code (Helm/Kustomize) Scripting skills (Python / Bash) Why join? Work on high-impact, critical systems Collaborative, supportive engineering culture Strong focus on learning, certifications, and progression Details Hybrid: home, Woking/London offices, and client sites SC Clearance required (5 years UK residency)