Windows Systems Administrator

Miller Maxwell Ltd; Greater London; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

26 days annual leave

Private medical cover

Life insurance

Pension contribution

3 days in office required

Bonus scheme

Job summary

Miller Maxwell is seeking a Windows Systems Administrator to lead a small, collaborative Infrastructure function across desktop and server duties in Europe. The role blends people leadership with hands-on technical depth and project ownership for IT initiatives.

You will manage a Desktop Support team, handle escalated tickets, and oversee Microsoft 365/Azure, device management, and PKI lifecycle, while aligning with security and scalability goals. This is a hybrid role with in-office days.

Qualifications

• 5+ years administering Windows systems in a large organisation.
• Proven Desktop support experience in a commercial environment.
• Experience managing a Windows Server estate (2019-2022).
• Windows Server 2025 beneficial but not essential.
• Solid Active Directory experience.

Responsibilities

• Take ownership of IT Projects across the desktop and server team.
• Manage and grow a Desktop Support team—day-to-day management of a small but growing team.
• Take ownership of the toughest support tickets.
• Microsoft estate management, both on-premise and in the cloud (M365/Azure).
• Build and enforce standards around device management, patching, and Group Policy.
• Handle the full certificate lifecycle across PKI.
• Govern change control and the joiner/mover/leaver process.
• Take ownership of procurement and vendor relationships.
• Work closely with wider infrastructure teams.

Skills

Windows Server

Active Directory

GPO

DHCP

DNS

NPS

Microsoft 365

Intune

VPN support

Tools

Azure

Job description

Windows Systems Administrator - Miller Maxwell has been engaged by a well-established hedge fund to find a Windows Systems Administrator who can take charge of its endpoint and server landscape across several European locations. It's a role that blends people leadership with genuine technical depth. You'll be part of a small, collaborative Infrastructure function spanning both endpoint and server-side responsibilities. The Windows Systems Administrator will be given the freedom to manage IT projects.

Windows Systems Administrator - responsibilities:

• Take ownership of IT Projects across the desktop and server team.
• Manage and grow a Desktop Support team — day-to-day management of a small but growing team.
• Take ownership of the toughest support tickets.
• Microsoft estate management, both on-premise and in the cloud (M365/Azure), with security and scalability front of mind.
• Build and enforce standards around device management, patching, and Group Policy.
• Handle the full certificate lifecycle — issuing, renewing, and revoking — across internal and external PKI.
• Govern change control and the joiner/mover/leaver process.
• Take ownership of procurement and vendor relationships.
• Work closely with wider infrastructure teams.

Windows Systems Administrator requirements:

• 5+ years administering Windows systems in a large organisation.
• Proven Desktop support experience in a commercial environment.
• Experience managing a Windows Server estate - Windows Server 2019 - Windows Server 2022
• Windows Server 2025 beneficial but not essential.
• Solid Active Directory experience.
• Confident with Microsoft Server tools — GPO, DHCP, DNS, NPS
• Microsoft 365 and Intune.
• VPN and network support experience. .
• Financial services experience beneficial but not essential.
• Able to translate technical detail into plain language for non-technical colleagues.
• Organised, proactive, and good at managing competing priorities without dropping the ball.

For further information, please contact the Miller Maxwell team.

Benefits:

• 26 days annual leave
• private medical cover
• life insurance
• pension contribution
• 3 days in office required
• Highly competitive bonus scheme.