Active Directory Specialist

We’re looking for an experienced AD Engineer to join a global enterprise IT environment, supporting and developing core infrastructure services across on-premise and cloud environments.

This is a hands-on role focused on the management, support and lifecycle of Active Directory and Microsoft infrastructure, with strong exposure to Azure and Entra .

Key Responsibilities

• Manage and support Active Directory, including OU design, GPOs, Group Policy Preferences, Domain Controllers and roles management.
• Manage core infrastructure services including DNS, DHCP, WINS and PKI/certificate services.
• Support and manage Azure and Microsoft Entra services, including:
• Conditional Access
• Role and Group Management
• Microsoft Authenticator
• On-premise Active Directory integration
• Group Policy and Intune policies
• Support SSO and authentication services across the enterprise.
• Perform server migrations, upgrades, security patching and application migrations.
• Troubleshoot complex infrastructure issues and proactively identify potential service-impacting problems.
• Work closely with Information Security to maintain infrastructure compliance.
• Develop and maintain technical documentation, procedures, RCAs and knowledge articles.
• Lead project and BAU activities, working with internal teams, suppliers and wider stakeholders.
• Provide technical leadership, mentoring and guidance to other team members.
• Contribute to infrastructure roadmaps, technology lifecycle management and service improvements.
• 5+ years' experience working with Microsoft infrastructure in an enterprise environment.
• Strong hands-on expertise across Active Directory, Group Policy, DNS and DHCP.
• Strong knowledge of Microsoft Azure and Entra .
• Extensive Power Shell scripting experience, including creation, testing and modification.
• Experience with PKI, certificate management and Domain Controller administration.
• Experience supporting SSO and authentication technologies.
• Experience with server migrations, upgrades, patching and application migrations.
• Understanding of high availability, disaster recovery and clustering.
• Experience supporting global infrastructure environments.
• Strong troubleshooting, analytical and problem-solving skills.
• Ability to communicate effectively with technical and non-technical stakeholders.
• F5 BIG-IP / load balancing experience.
• Experience migrating services to Azure.
• Microsoft certifications across Active Directory, Azure or related technologies.
• ITIL Foundation certification or demonstrable ITIL working practices.
• IR35: Inside IR35
• Location: London