Salary: £85,000 - 100,000 per year Requirements: 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) Responsibilities: 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 Technologies: ArgoCD Bash Cloud GitOps Grafana Helm Istio Kubernetes OpenShift Prometheus Python DevOps More: We are looking for a Principal Site Reliability Engineer to lead the design and delivery of scalable, cloud-native platforms supporting critical UK services. Our hybrid working environment includes home, Woking/London offices, and client sites. We offer a collaborative and supportive engineering culture with a strong focus on learning, certifications, and progression. Additionally, SC Clearance is required, reflecting our commitment to maintaining a secure working environment. last updated 12 week of 2026