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# Site Reliability Engineer

- **Company:** Morgan McKinley
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Microsoft Azure, Configuration Management, Continuous Integration, DevOps, Domain Name System (DNS), Kerberos (Protocol), Windows Servers, Performance Tuning, Windows PowerShell, Reliability Engineering, Ansible, Wintel, YAML, Software Modules, Delivery Pipeline, Technical Debt, HybridCloud, Infrastructure as Code (IaC), Git, Infrastructure Automation Frameworks, Deployment Automation, Hashicorp, Terraform
- **Published:** October 6, 2026
- **Apply:** https://www.reed.co.uk/jobs/site-reliability-engineer/57426754

## About the Role

* Wintel OS & Active Directory Depth: Proven Level 3 experience managing complex enterprise Windows Server environments, Active Directory, GPO, DNS, and Kerberos at scale.
 * Advanced PowerShell Automation: Advanced hands-on capabilities writing original, modular PowerShell scripts and configuration-as-code (PowerShell DSC) for automated deployment and configuration enforcement (beyond simple maintenance scripting).
 * CI/CD & Pipeline Creation: Active, hands-on experience authoring multi-stage Azure DevOps (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: HashiCorp Certified Terraform Associate, Microsoft Azure Administrator/DevOps Engineer Expert, or MCSE.
 * Exposure to configuration management tooling such as Ansible or NinjaOne.

## Description

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., * CI/CD Pipeline Authoring: Design, build, and maintain production-grade infrastructure deployment pipelines using Azure DevOps (YAML/Git) to deliver automated, auditable, and reliable infrastructure changes.

 * Code-First Infrastructure Automation: Leverage PowerShell (including PowerShell 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.