Active Directory Migration Technical Lead / Senior Engineer - Remote (UK / EU)
Description
Role Overview:
We are seeking an experienced Active Directory specialist to support the migration of AD services between infrastructure environments spanning both on-premises and Microsoft Azure cloud platforms.
This is a hands-on technical role, not a pure project management position. The successful candidate will provide expert technical input, help shape the migration approach, and work collaboratively with infrastructure, cloud, security, application, and operational teams. They must also be comfortable working independently, taking ownership, and proactively driving technical activities through to completion.
Responsibilities:
The ideal candidate must be self-motivated with a proven record of accomplishment.
- Assess existing Active Directory environments and identify migration requirements, dependencies, risks, and constraints.
- Design and execute migrations between AD environments, including cloud, hybrid, and on-premises infrastructure.
- Provide expert input into migration strategy, architecture, planning, sequencing, testing, cutover, and rollback.
- Support the migration of users, groups, computers, service accounts, permissions, policies, and associated identity services.
- Troubleshoot complex Active Directory, authentication, DNS, trust, replication, and identity-synchronisation issues.
- Work closely with other technical teams to coordinate dependencies and minimise service disruption.
- Produce and maintain technical designs, migration plans, implementation procedures, test evidence, and operational handover documentation.
- Identify technical risks and recommend practical mitigations.
Required Skills and Experience:
- Expert-level knowledge of Microsoft Active Directory Domain Services.
- Demonstrable experience delivering complex AD migrations between domains, forests, tenants, or infrastructure environments.
- Strong understanding of hybrid identity and Microsoft Azure environments, including Microsoft Entra ID.
- Experience with relevant identity components such as Entra Connect/Azure AD Connect, DNS, Group Policy, trusts, replication, authentication, and access controls.
- Strong hands-on troubleshooting and problem-solving skills.
- Ability to contribute at architecture and detailed technical implementation levels.
- Experience planning and executing migrations with appropriate testing, cutover, rollback, and service-continuity controls.
- Able to work effectively across multiple technical and business teams.
- Self-motivated, proactive, and capable of progressing work with limited supervision.
- Excellent spoken and written English.
- Based in the UK or EU and able to work effectively with UK/European teams.
Desirable Skills:
- Migration of file shares, file servers, permissions, and associated infrastructure services between environments.
- Experience preserving or remediating NTFS and share permissions during file migrations.
- Experience working within Operational Technology environments or other highly controlled, safety-critical, or regulated infrastructure.
- Familiarity with PowerShell automation and commonly used AD migration or discovery tools.
- Experience with security hardening, privileged access, and identity governance.
- Experience producing technical documentation suitable for operational handover and audit purposes.
Location:
- Candidates must be based in the UK or EU
- Candidates must have the right to work in the UK or EU
- Remote working, with possible occasional client or project meetings depending on project requirements