SRE Technical Lead

SRE Technical Lead Reading / Hybrid (UK-based - mix of home, office, and client site) Must be eligible for SC Clearance We are seeking an experienced SRE Technical Lead to act as the technical authority for Site Reliability Engineering across complex, large-scale platforms. This is a senior, client-facing leadership role where you will be responsible for driving reliability, availability, and operational excellence across multi-team and multi-vendor environments.

You will combine hands-on engineering expertise with strategic leadership, ensuring SRE practices are embedded across the full service lifecycle-from design through to production operations. As the SRE Technical Lead, you will:
Define and implement SRE strategy, standards, and best practices, including SLAs, SLOs, and error budgets Embed reliability principles into platform and service design from the outset Lead key SRE practices such as reliability reviews, operational readiness, and toil reduction Drive automation across monitoring, incident response, and remediation Act as the technical escalation point for major incidents and high-risk releases Lead blameless post-incident reviews and ensure continuous improvement Establish observability and capacity management practices using modern tooling Identify and eliminate systemic reliability risks and operational inefficiencies Collaborate with engineering, platform, security, and operations teams across multiple vendors Provide coaching and mentorship to engineers, raising SRE capability across the organisation Essential experience:
Deep expertise in Kubernetes and/or Open Shift Experience working in multi-cloud or hybrid cloud environments Strong understanding of SRE principles (SLOs, SLAs, error budgets, reliability engineering) Hands-on experience with observability tooling (e.g., Prometheus, Grafana, Open Telemetry, Loki, Tempo) Strong knowledge of Infrastructure as Code and Git Ops (e.g., Helm, Kustomize, ArgoCD, Tekton)

Experience with CI/CD pipelines and automation Proven ability to operate as a technical leader in complex, multi-team environments