Active Directory Consultant - NHS*

Employer: TH AND J CONSULTING LTD

Location: Fully Remote 

Temporary: Fixed Term Contract for 6–12 months

Salary: Not listed

• Job description

  Active Directory - Infrastructure Engineer - AD - AD Engineer - Active Directory Engineer

  Active Directory Migration Specialist (Contract)

  Location: Fully Remote
  Contract Type - OUTSIDE IR35
  Duration: 6–12 months
  

  Role Overview

  We 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

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