Senior Infrastructure Engineer - Windows

Selby Jennings; Greater London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading London-based hedge fund is seeking a hands-on Lead Windows Engineer to design and own core Windows infrastructure. The role involves maintaining high-performance environments, managing Windows 11 and Server, and driving architectural decisions for scalability and security. Candidates should have 7+ years in Windows Infrastructure Engineering and expert-level knowledge of Azure and related technologies. This position offers a significant impact in a dynamic and modern environment.

Qualifications

• 7+ years of experience in Windows Infrastructure Engineering within a complex enterprise environment.
• Expert-level knowledge of Azure, Intune, Microsoft 365 and Entra ID.
• Strong experience configuring, managing and deploying Windows 11 and Windows Server.
• Strong IaC skills including PowerShell and familiarity with Microsoft Graph API.

Responsibilities

• Design, implement and maintain enterprise-grade Windows infrastructure across on-prem and cloud environments.
• Own Windows 11 and Windows Server configuration, lifecycle management, deployment, patching and troubleshooting.
• Architect and manage Entra ID (Azure AD), hybrid identity and domain services.
• Partner with cross-functional teams to drive architectural decisions that support scalability, operational resilience and security best practices.

Skills

Windows Infrastructure Engineering

Azure

Intune

Microsoft 365

PowerShell

Microsoft Graph API

Job description

Our client, a leading London‑based hedge fund, is seeking a hands‑on Lead Windows Engineer to design, build and own their core Windows infrastructure. The successful hire will work closely with security, engineering and operations teams to ensure a robust, reliable and high‑performing Windows estate across the organisation.

This is a greenfield, high‑performance environment where your architectural decisions will have both immediate and long‑term impact. The organisation is heavily invested in Windows‑based endpoints and requires someone who can drive standards, resilience and modernisation end‑to‑end.

Key Responsibilities

• Design, implement and maintain enterprise‑grade Windows infrastructure across on‑prem and cloud environments.
• Own Windows 11 and Windows Server configuration, lifecycle management, deployment, patching and troubleshooting.
• Architect and manage Entra ID (Azure AD), hybrid identity and domain services.
• Partner with cross‑functional teams to drive architectural decisions that support scalability, operational resilience and security best practices.

Requirements

• 7+ years' experience in Windows Infrastructure Engineering within a complex enterprise environment.
• Expert‑level knowledge of Azure, Intune, Microsoft 365 and Entra ID.
• Strong experience configuring, managing and deploying Windows 11 and Windows Server.
• Strong IaC skills including PowerShell and familiarity with Microsoft Graph API.
• Proven ability to engineer scalable, secure, high‑performance Windows environments