Site Reliability Engineer

Location: Bampton

About the Role We are seeking a Senior Level 3 Wintel Site Reliability Engineer (SRE) to join our infrastructure engineering function in London. This is a hands-on "builder" position focused on modernizing, automating, and maintaining our enterprise Windows Server ecosystem and hybrid cloud integrations. Moving away from routine ticket handling, this role demands a code-first engineering mindset. You will treat infrastructure as code, design resilient architecture, and author production-grade CI/CD automation pipelines to eliminate operational toil across enterprise Windows, Active Directory, and hybrid Azure platforms.

Key Responsibilities CI/CD Pipeline Authoring:
Design, build, and maintain production-grade infrastructure deployment pipelines using Azure Dev Ops (YAML/Git) to deliver automated, auditable, and reliable infrastructure changes. Code-First Infrastructure Automation:
Leverage Power Shell (including Power Shell DSC / module development) and Infrastructure as Code ( Terraform ) to automate OS deployment, configuration management, and lifecycle processes across hybrid server estates. Level 3 Infrastructure Operations:
Serve as the senior technical escalation point for complex Windows Server OS internals, Active Directory forests, Group Policies, Kerberos authentication, and core domain services. Site Reliability Engineering (SRE):
Implement proactive observability, monitoring, automated recovery workflows, and performance optimization to enforce continuous service availability and operational resilience. Architecture & Modernization:
Partner with engineering, cloud, and security teams to eliminate configuration drift, reduce technical debt, and drive enterprise-scale infrastructure standards. Essential Technical Requirements Wintel OS & Active Directory Depth:
Proven Level 3 experience managing complex enterprise Windows Server environments, Active Directory, GPO, DNS, and Kerberos anced Power Shell Automation:
Advanced hands-on capabilities writing original, modular Power Shell scripts and configuration-as-code (Power Shell DSC) for automated deployment and configuration enforcement (beyond simple maintenance scripting). CI/CD & Pipeline Creation:
Active, hands-on experience authoring multi-stage Azure Dev Ops (YAML) deployment pipelines from scratch-not simply executing pre-built pipelines. Infrastructure as Code (IaC):
Solid working experience with Terraform for declarative infrastructure provisioning. Engineering Mindset: A strong "builder" mentality focused on reducing manual toil, establishing automated guardrails, and building reliable, scalable systems.

Desirable Experience Prior experience working within regulated enterprise or financial services environments. Relevant certifications:
Hashi Corp Certified Terraform Associate, Microsoft Azure Administrator/Dev Ops Engineer Expert, or MCSE. Exposure to configuration management tooling such as Ansible or Ninja One.