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# Senior Microsoft Enterprise Systems Engineer

- **Company:** ByDesign Secure
- **Location:** Bristol, United Kingdom
- **Experience:** Expert
- **Salary:** £109,200 - £130,000
- **Contract:** Temporary contract
- **Skills:** Microsoft Windows, Active Directory, Artificial Intelligence, Microsoft Azure, Cloud Computing, Data Security, Microsoft Exchange Server, Microsoft Office, Role-Based Access Control, Microsoft SharePoint, Enterprise Software Applications, Cloud Platform System, SC Clearance
- **Published:** November 12, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5961625464

## About the Role

* 7+ years of Microsoft enterprise infrastructure experience
 * Strong hands-on experience with Active Directory Domain Services (AD DS)
 * Strong experience with Exchange Server SE
 * Strong experience with SharePoint Server SE
 * Experience operating in disconnected or restricted-network environments
 * Experience working in regulated or classified environments
 * Strong technical documentation and stakeholder communication skills, including the ability to communicate effectively with technical and non-technical stakeholders
 * Strong written communication skills for producing high-quality design outputs
 * The posting states that candidates must hold active SC/DV clearance and UK citizenship; it also states that existing SC clearance or clearance before commencement is required, with willingness to undergo DV
 * UK work authorisation is required
 * Ability to attend on site in London or Bristol when required, typically around three days per week
 * Desirable: experience with government classified systems or secure data centres; configuring and using AI technologies in cloud environments; familiarity with NCSC guidance, UK Government cloud policies, or cross-domain architectures; Microsoft Azure, Microsoft 365, or other relevant cloud certifications; existing DV clearance

## Description

* Deploy, administer, and harden Active Directory Domain Services (AD DS)
 * Deploy and support Exchange Server SE
 * Deploy and support SharePoint Server SE
 * Design and implement enterprise Microsoft infrastructure services in secure and air-gapped environments
 * Enforce security controls, including Group Policy Objects (GPOs), role-based access control (RBAC), and platform hardening standards
 * Operate and maintain business-critical services in classified environments
 * Collaborate with security, architecture, and engineering teams to deliver enterprise solutions
 * Produce technical designs, implementation plans, and service documentation
 * Support governance activities and Technical Design Authority (TDA) reviews
 * Develop high-level, conceptual, and low-level designs (HLDs, CLDs, and LLDs), operational procedures, and runbooks

Technologies:

 * AI
 * Active Directory
 * Azure
 * Cloud
 * Support
 * Microsoft 365
 * Network
 * RBAC
 * Security
 * SharePoint
 * Office 365