Head of Windows Infrastructure (Fintech)

Company: Hamilton Barnes ?
Apply for the Head of Windows Infrastructure (Fintech)
Location: London
Job Description:

A leading global FinTech organisation is looking for a Head of Windows Engineering to lead and evolve its enterprise Microsoft infrastructure estate across a global environment.

This is a senior technical leadership role with responsibility for a small international engineering team. The position combines hands-on technical leadership, operational ownership, automation initiatives and infrastructure project delivery within a highly available, business-critical environment.

The role would suit someone with strong Microsoft infrastructure expertise who enjoys driving technical standards, improving automation, acting as an escalation point for engineers, and leading the strategic direction of a modern Windows platform. It is also an excellent opportunity for someone looking to take their technical leadership skills to the next level while collaborating on a range of exciting projects and technically challenging initiatives within a fast-paced global business.

Key Responsibilities

  • Own and lead the global Windows & Microsoft infrastructure environment
  • Provide technical leadership and mentorship to a distributed engineering team
  • Drive automation and Infrastructure-as-Code initiatives across the estate
  • Act as the senior escalation point for complex infrastructure issues
  • Lead infrastructure improvement and modernisation projects
  • Manage and optimise core Microsoft technologies including:
  • Windows Server
  • Microsoft 365
  • Active Directory / Entra ID
  • Support hybrid cloud infrastructure environments across Azure and AWS
  • Improve operational efficiency, platform reliability and security posture
  • Work closely with technical operations and wider infrastructure teams globally

Requirements

  • Strong background in enterprise Windows infrastructure engineering
  • Experience leading or mentoring technical engineering teams
  • Advanced PowerShell scripting and automation experience
  • Experience with Infrastructure-as-Code tooling such as Terraform
  • Strong understanding of:
  • Microsoft 365
  • Active Directory / Hybrid Identity
  • Experience operating within complex, global infrastructure environments
  • Strong troubleshooting and escalation management capability
  • Up to £125,000 basic salary per annum
  • Discretionary bonus

Location

West London (Hybrid 3x per week in the office)

If you are looking for an opportunity where you can combine hands-on technical expertise with leadership responsibility, influence the direction of a global Microsoft estate, and play a key role in driving automation and infrastructure transformation, this could be an excellent next step in your career.

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Posted: June 1st, 2026