Active Directory SME – Consultancy

Company: Hamilton Barnes Associates Limited
Apply for the Active Directory SME – Consultancy
Location: London
Job Description:

The consulting firm is looking for a Senior Active Directory Engineer to support a large enterprise infrastructure and security transformation programme. The role involves reviewing, designing, and improving Microsoft Active Directory environments, working with infrastructure, security, and application teams to strengthen security and improve operations.

Responsibilities

  • Review and improve existing Active Directory tiering policies.
  • Assess cross-tier dependencies and identify risks.
  • Review and remediate service accounts and scheduled tasks.
  • Implement changes to AD groups, users, and server objects.
  • Validate functionality and access post-change.
  • Prepare deployment plans, runbooks, and remediation plans.
  • Collaborate with stakeholders to deliver successful outcomes.

Required Skills/Qualifications

  • Strong hands‑on experience with Microsoft Active Directory.
  • Expertise in AD architecture: forests, domains, trusts, sites, and replication.
  • Experience managing large‑scale enterprise AD environments.
  • Strong understanding of AD Tiering (Tier 0, 1, 2) and security models.
  • Experience with OU design, delegation, and Group Policy inheritance.
  • Ability to perform gap analysis and provide clear recommendations.

Desirable Skills

  • Experience with Microsoft Entra ID/cloud synchronisation.
  • Exposure to PAM/PIM/identity governance tools.
  • Experience with Jira, Azure DevOps, and ITSM tools.
  • Strong communication and stakeholder management skills.

Salary

  • £550 per day

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Posted: May 18th, 2026