Negotiable
Outside
Remote
North West London (NW1)
Summary: The role of Active Directory Migration Specialist involves leading the migration of Active Directory within a complex enterprise identity transformation program. This hands-on contract position requires expertise in various technical areas, including security, application analysis, and testing, to ensure a secure and seamless migration process. The candidate will be responsible for managing the migration of users, devices, and applications across both on-premises and cloud environments. The position is fully remote and classified as outside IR35.
Key Responsibilities:
- Lead end-to-end delivery of Active Directory migration activities across source and target environments.
- Plan and execute migration of users, groups, devices, and identity objects.
- Work with migration tooling including ADMT, ForensiT Corporate Edition, and Quest Migration Manager.
- Troubleshoot Kerberos authentication issues and manage SPN dependencies.
- Produce detailed runbooks, cutover plans, rollback procedures, and technical documentation.
- Support hybrid identity integration using Entra ID (Azure AD) and Azure AD Connect.
- Configure and troubleshoot MFA solutions (Duo, Microsoft Authenticator).
- Implement and validate Conditional Access policies.
- Assess and support PKI dependencies, including AD CS and certificate trust chains.
- Validate NTAuth, NPS/RADIUS services, and certificate templates.
- Perform application dependency mapping for migration-impacted services.
- Engage stakeholders across business and technical teams.
- Support migration testing, rollback validation, and pilot deployments.
- Coordinate UAT activities and produce clear test evidence.
Key Skills:
- Strong experience delivering Active Directory migration projects in enterprise environments.
- Expertise in Kerberos authentication and SPN management.
- Hands-on experience with ADMT, ForensiT, Quest Migration Manager, SCCM, Intune.
- Proven knowledge of Entra ID, Azure AD Connect, and Conditional Access.
- Experience with MFA platforms (Duo, Microsoft Authenticator).
- Solid understanding of PKI, AD CS, NTAuth, NPS/RADIUS, and certificate management.
- Experience in application dependency mapping and authentication analysis (LDAP/Kerberos).
- Strong background in migration testing, UAT coordination, and validation scripting.
- Excellent troubleshooting, documentation, and stakeholder engagement skills.
Salary (Rate): undetermined
City: North West London
Country: United Kingdom
Working Arrangements: remote
IR35 Status: outside IR35
Seniority Level: undetermined
Industry: IT
Active Directory - Infrastructure Engineer - AD - AD Engineer - Active Directory EngineerActive Directory Migration Specialist (Contract)Location: Fully RemoteContract Type - OUTSIDE IR35Duration: 6–12 monthsRole OverviewWe are looking for an experienced Active Directory Migration Specialist to join a complex enterprise identity transformation programme. This is a hands-on contract role requiring a well-rounded technical professional who can operate across Active Directory migration, hybrid identity, security, application analysis, and testing.You will play a key role in ensuring the secure and seamless migration of users, devices, applications, and authentication services across on-premises and cloud environments.
Key Responsibilities
- Active Directory Migration
- Lead end-to-end delivery of Active Directory migration activities across source and target environments
- Plan and execute migration of users, groups, devices, and identity objects
- Work with migration tooling including ADMT, ForensiT Corporate Edition, and Quest Migration Manager
- Troubleshoot Kerberos authentication issues and manage SPN dependencies
- Produce detailed runbooks, cutover plans, rollback procedures, and technical documentation
- Azure / Identity Engineering
- Support hybrid identity integration using Entra ID (Azure AD) and Azure AD Connect
- Configure and troubleshoot MFA solutions (Duo, Microsoft Authenticator)
- Implement and validate Conditional Access policies
- Ensure secure authentication and access continuity throughout migration phases
- Security & PKI
- Assess and support PKI dependencies, including AD CS and certificate trust chains
- Validate NTAuth, NPS/RADIUS services, and certificate templates
- Align solutions with tiered administration and privileged access models
- Identify and remediate security risks impacting users, devices, and services
- Application & Business Analysis
- Perform application dependency mapping for migration-impacted services
- Analyse authentication methods (LDAP, Kerberos)
- Engage stakeholders across business and technical teams
- Facilitate workshops to capture application ownership, risks, and migration readiness
- Testing & QA
- Support migration testing, rollback validation, and pilot deployments
- Execute access validation scripts and verify authentication outcomes
- Coordinate UAT activities and produce clear test evidence
- Validate access, permissions, and application functionality post-migration
Essential Skills & Experience
- Strong experience delivering Active Directory migration projects in enterprise environments
- Expertise in Kerberos authentication and SPN management
- Hands-on experience with ADMT, ForensiT, Quest Migration Manager, SCCM, Intune
- Proven knowledge of Entra ID, Azure AD Connect, and Conditional Access
- Experience with MFA platforms (Duo, Microsoft Authenticator)
- Solid understanding of PKI, AD CS, NTAuth, NPS/RADIUS, and certificate management
- Experience in application dependency mapping and authentication analysis (LDAP/Kerberos)
- Strong background in migration testing, UAT coordination, and validation scripting
- Excellent troubleshooting, documentation, and stakeholder engagement skills
Desirable Experience
- Previous experience on large-scale enterprise migration or transformation programmes
- Strong understanding of hybrid Microsoft environments and identity security models
- Ability to work independently across infrastructure, security, and business domains
Key Deliverables
- Active Directory and identity migration plans, runbooks, and cutover documentation
- Security and PKI assessments with remediation actions
- Application dependency maps and stakeholder outputs
- Test plans, rollback evidence, and UAT documentation
Apply today for immediate start