Active Directory Architect - DV Cleared in Corsham

Job Description

We are currently hiring for an DV Cleared Active Directory Architect for an initial 6 months contract assignment. (Duration is very likely to extend).

You must hold current active DV Clearance.

This position is Inside IR35 and will be working on site.

The preference is for the individual to be based in Erskine, however if based closer to Farnborough or Newcastle, the resource would be expected to attend the client site in Corsham twice per week.

We are seeking a highly skilled Microsoft Active Directory (AD) Architect to lead the design, implementation, and optimisation of enterprise directory services within secure, high-assurance environments.

This role requires deep technical expertise in Active Directory architecture, strong delivery experience, and the ability to operate both strategically and hands-on.

The successful candidate will support a UK secure account, working closely with stakeholders and delivering solutions on customer sites.

The candidate must have fully transferrable DV clearance.

Key Responsibilities

• Lead the architecture, design, and evolution of Microsoft Active Directory environments (on-premises)
• Act as the technical SME for Active Directory, providing expert guidance on best practices, policies, and standards
• Design and implement secure AD architectures, including domains, forests, trusts, and replication strategies
• Develop and enforce Group Policy (GPO) strategies aligned with security and operational requirements
• Deliver identity services integration, including federation (ADFS)
• Define and implement tiered administration models, privileged access controls, Integration with Privileged access Management tooling, and secure identity design patterns
• Conduct health checks, security assessments, and remediation planning for AD environments
• Support incident resolution and root cause analysis relating to identity and authentication services
• Produce and maintain comprehensive design and operational documentation
• Work closely with security, infrastructure, and application teams to ensure secure and efficient identity services
• Engage directly with Tech Lead, Programme Manager and customers on-site, supporting delivery and building trusted relationships.
• Required Skills & Experience
• Proven experience in an Active Directory Architect or Senior SME role

• Deep hands-on expertise with

• Microsoft Active Directory (multi-domain/forest environments)
• Group Policy design and management
• DNS, DHCP, and core supporting infrastructure
• Strong experience in designing and implementing enterprise-scale AD environments
• Demonstrable experience producing high-quality design documentation, including:
• High-Level Designs (HLDs)
• Low-Level Designs (LLDs)
• Security architecture documentation
• Operational procedures and runbooks

• Strong understanding of identity security, including

• Tiered administration models
• Least privilege access
• Privileged Access Workstations (PAWs)
• Privileged access Management Toolset
• Knowledge of authentication protocols (Kerberos, NTLM, LDAP, SAML, OAuth)
• Experience with Power Shell Scripting and automation
• Familiarity with integrating AD into enterprise security and monitoring tooling (eg, SIEM)
• Excellent stakeholder engagement, communication, and documentation skills
• Conduct health checks, security assessments, and remediation planning for AD environments
• Support incident resolution and root cause analysis relating to identity and authentication services
• Produce and maintain comprehensive design and operational documentation
• Work closely with security, infrastructure, and application teams to ensure secure and efficient identity services
• Engage directly with Tech Lead, Programme Manager and customers on-site, supporting delivery and building trusted relationships