Senior Windows Systems Administrator - AD & Exchange Expert

Global Relay; City Of London; On-site; GBP 65,000 - 90,000; Full time

Job summary

Global Relay is seeking a Senior Windows Administrator to join the Operations team in London. You will design, manage and support Windows environments with a focus on Exchange, Active Directory, and desktop management (GPO, SCCM, MDT, MSI re-packaging).

You will implement desktop security policies, keep configurations up to date, and drive proactive incident prevention while maintaining high availability and disaster recovery readiness.

Qualifications

• Minimum 3–5 years of direct experience with Exchange and at least 10 years of overall IT administration and advanced computer support.
• Technical infrastructure design, implementation and management including Active Directory, DNS, DHCP, LDAP, MDT, and SCCM.
• Ability to monitor, test and analyze system activities for maximum performance, efficiency and availability.
• Ability to plan for growth or increases in system capacity and to resolve performance issues in a timely manner.
• Extensive knowledge of Microsoft Exchange including mailbox server failover and cluster management.
• Extensive knowledge of Windows Server, AD, DNS, DHCP, DFS, DFS-R, File and Print Services, and GPO validation.

Responsibilities

• Administer corporate Active Directory and Exchange environments; SME for AD & Exchange deployments.
• Develop and manage desktop management policies for securing desktops and deploying software.
• Update documentation and configurations for Exchange and Active Directory.
• Deliver timely incident resolution and post-incident analysis.
• Develop and implement strategies for proactive support to reduce incidents and accelerate deployments.
• Respond to Support and Operations cases related to Exchange, AD or Windows Server issues.
• Ensure Windows systems have high service availability.
• Align corporate services with Business Continuity and Disaster Recovery programs.

Skills

Active Directory

Exchange Server

PowerShell

SCCM

MDT

GPO

DNS

DHCP

Office 365 / Outlook

Windows Server

Education

MCSA / MCSE / MTA certification

Bachelor's degree in IT

Tools

SCCM

MDT

Job description

Global Relay is seeking a Senior Windows Administrator to join the Operations team in London. You will design, manage and support Windows environments with a focus on Exchange, Active Directory, and desktop management (GPO, SCCM, MDT, MSI re-packaging).

You will implement desktop security policies, keep configurations up to date, and drive proactive incident prevention while maintaining high availability and disaster recovery readiness.