AD & Identity Engineer – On-site London (Hybrid Entra ID)

Opticore IT Ltd; Greater London; On-site; GBP 77,000 - 118,000; Full time

Job summary

Opticore IT in London is seeking an Active Directory & Identity Engineer to own day-to-day AD DS administration and its hybrid integration with Entra ID. This 9-month contract requires two days on-site per week at our London office, with ITIL-aligned governance and a focus on security and automation.

You will develop PowerShell scripts to streamline operations, manage Group Policy, DNS, DHCP, and Trusts, and collaborate with Cyber Security and Application Owners to enforce privileged access

Qualifications

• Hands-on AD DS across OUs, Sites, Trusts and Schema.
• Strong scripting for data extraction and bulk changes with PowerShell.
• GPO creation and troubleshooting, DNS/DHCP/Kerberos/LDAP.
• Understanding of Entra ID and hybrid synchronization.
• Experience with ITIL Incident, Problem and Change processes.

Responsibilities

• Administer on-premises AD DS and Entra ID hybrid connectivity.
• Update directory objects: moves, group changes, provisioning, audits.
• Troubleshoot incidents, problems and changes per ITIL and ITV standards.
• Develop and maintain PowerShell scripts for automation and JML workflows.
• Manage Group Policy, DNS, DHCP, Sites/Services, and Trusts.
• Resolve Kerberos/NTLM authentication and access issues.
• Ensure domain controllers, backups, replication health maintained.
• Collaborate on privileged access controls including CyberArk PAM.
• Drive automation and maintain SOPs and documentation.

Skills

Active Directory Administration & 

PowerShell Automation for AD

Group Policy & AD Core Services

Hybrid Identity (Microsoft Entra ID)

ITIL Service Management

Tools

PowerShell

Job description

Opticore IT in London is seeking an Active Directory & Identity Engineer to own day-to-day AD DS administration and its hybrid integration with Entra ID. This 9-month contract requires two days on-site per week at our London office, with ITIL-aligned governance and a focus on security and automation.

You will develop PowerShell scripts to streamline operations, manage Group Policy, DNS, DHCP, and Trusts, and collaborate with Cyber Security and Application Owners to enforce privileged access