Senior Active Directory & Identity Migration Consultant

Senior Active Directory & Identity Migration Consultant Contract | £600 per day | Outside IR35 | 3 months | Immediate start Location: London / International time zones We are seeking an experienced Senior Active Directory & Identity Migration Consultant to support a major enterprise identity transformation programme. This is a high-impact contract role focused on consolidating multiple Active Directory environments into a single target domain. The programme includes UPN and primary email address changes, device domain migrations, user-profile migrations, permissions remediation, and the management of complex downstream dependencies across Microsoft 365, Entra ID, SSO-integrated applications, file shares and legacy systems. As the programme progresses, several application, access and permissions dependencies have been identified. We are therefore looking for a technically strong contractor who combines deep migration expertise with broad enterprise infrastructure experience. You will work closely with internal project teams, third-party suppliers and business stakeholders to shape and deliver the remaining phases of the migration programme. Key responsibilities • Deliver large-scale Active Directory and identity transformation activities. • Support the consolidation of multiple AD environments into a single target Active Directory domain. • Lead and support UPN and primary email address change activities. • Deliver device domain migrations and user-profile migration activities. • Identify, assess and remediate permissions, access and application dependencies. • Support hybrid identity integration across Active Directory, Microsoft 365 and Entra ID. • Work with SSO-integrated applications, file shares and legacy systems to manage migration impacts. • Collaborate with technical teams, suppliers and stakeholders to ensure a controlled, successful migration. Essential experience • Proven experience delivering large-scale Active Directory and identity transformation projects. • Strong hands-on experience with Quest migration tooling. • Demonstrable experience delivering Microsoft Identity and primary email address change programmes. • Experience with hybrid identity, Microsoft 365 and Entra ID. • Experience of AD domain migrations, device migrations and user-profile migrations. • Strong understanding of permissions remediation, access management and application dependency mapping. • Experience managing migration impacts across SSO-integrated applications, file shares and legacy systems. • Ability to operate effectively in a complex enterprise environment with multiple stakeholders and suppliers. This is an immediate-start opportunity for a senior technical contractor who can bring both strategic insight and hands-on delivery capability to a critical identity migration programm