Lucid Support Services Ltd
Active Directory Specialist
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Active Directory Migration Engineer
Domain Controller Upgrade - SC Cleared
Location: Hybrid – Remote with occasional on-site attendance (Central London)
Clearance: SC/DV Cleared IDeal
Contract Duration: 40 Days
Start: Due to checks, likely start date of October 2026
Role Overview
We are seeking an experienced Active Directory Engineer to lead a critical upgrade of Domain Controllers to a fully supported Windows Server 2022 platform. This engagement will ensure ongoing platform support, strengthen security posture, and enable key dependent services such as Always-On VPN (AOVPN).
Working across a mixed on-premises and virtual environment, you will be responsible for delivering a seamless upgrade with minimal disruption to core identity services. This role is well suited to a hands-on infrastructure specialist who is confident operating in live environments and delivering structured upgrade programmes within tight timelines.
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Essential Requirements
- Proven experience upgrading Active Directory Domain Controllers (Server 2016 → 2019/2022)
- Strong knowledge of Active Directory architecture, including multi-site environments
- Experience working across hybrid infrastructure (on-premises and virtual servers)
- Solid understanding of AD functional levels, schema management, and replication
- Hands-on experience migrating and validating DNS services
- Experience configuring and validating NPS/RADIUS services
- Knowledge of PKI, including implementing strong certificate mapping (e.g. KB5014754)
- Ability to deliver phased migration approaches (build, migration, testing, handover)
- Strong troubleshooting and validation skills in live environments
- Ability to minimise service disruption and maintain business continuity
Desirable Requirements
- Experience supporting Always-On VPN (AOVPN) environments
- Previous work within highly secure or regulated environments
- Relevant Microsoft certifications (e.g. Windows Server / Identity and Access)
- Familiarity with structured project delivery methodologies
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If you are available and interested in this opportunity, please apply for further information. Please note due to high volumes of applications we are unable to contact every application. If you do not hear back from us within 7 days of sending your application, please assume that you have not been successful on this occasion.
At Lucid, we celebrate difference and value diverse perspectives, underpinned by our values ‘Honesty, Integrity and Pragmatism’. We are proud to provide equal opportunities in line with our Diversity and Inclusion policy and welcome applications from all suitably qualified or experienced people, regardless of personal characteristics.
If you have a disability or health condition and seek support throughout the recruitment process, please do not hesitate to contact us via the details below.
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