Salary: £55,000 - 55,000 per year Requirements: British Citizenship; Developed Vetting (DV) Clearance required (can start on SC) Comprehensive understanding of Active Directory Domain Services (AD DS) and Group Policy (GPO) Proven experience managing identity in air-gapped or secure enclave environments Advanced proficiency in PowerShell for systems administration and reporting Deep understanding of Kerberos, LDAP, and NTLM authentication Familiarity with PKI, smartcards, and Privileged Access Management (PAM) Responsibilities: Administer and secure Active Directory Domain Services (AD DS) across multi-forest, air-gapped, and secure enclave environments Maintain rigorous compliance with security frameworks and perform regular audits of AD health and access controls Manage and support Azure AD / Entra ID, ADFS, and hybrid identity solutions under strict regulatory controls Manage core networking services including DNS, DHCP, Sites and Services, and Replication Utilize PowerShell for the automation of routine tasks, reporting, and large-scale auditing Support Identity and Access Management (IAM) services, focusing on Kerberos, LDAP, and NTLM protocols Manage Public Key Infrastructure (PKI) and implement smartcard-based authentication and Privileged Access Management (PAM) principles Produce high-quality technical documentation for both technical engineering teams and non-technical stakeholders Technologies: Active Directory Azure IAM Support LDAP PowerShell Security Cloud More: We offer an exciting opportunity for an Active Directory Engineer to join our dynamic team in Bristol, Bolton, or Stevenage with a hybrid working pattern. Our organization values compliance and security within complex environments, providing a unique chance to enhance your skills while contributing to critical projects. We also offer a competitive benefits package, including a performance-based annual bonus, a competitive pension scheme, flexi-time with additional leave, enhanced parental leave, and site facilities such as subsidised meals and free parking. last updated 8 week of 2026