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We are seeking an experienced Microsoft 365 Architect to define and lead the architecture of secure collaboration services across Exchange Online, SharePoint Online, and Microsoft Teams. You will shape scalable, compliant solutions for defence programmes, working closely with engineering, security, and product teams in an Agile and DevOps environment.
Job Responsibility:
Own end-to-end architecture for M365 (Email, SharePoint, Teams)
Produce high- and low-level designs aligned to security and compliance standards
Define governance, configuration baselines, and integration patterns
Lead on security architecture (DLP, retention, identity, access control)
Provide technical leadership and design authority across teams
Drive automation, DevOps practices, and Infrastructure as Code
Support accreditation, risk, and assurance activities
Engage stakeholders and translate business needs into technical solutions
Requirements:
Deep experience designing Microsoft 365 architectures (Exchange, SharePoint, Teams)
Strong knowledge of security and compliance (DLP, Conditional Access, retention, auditing)
Experience in regulated or secure environments
Understanding of Entra ID / identity and access models
Exposure to DevOps, CI/CD, and automation practices
Strong stakeholder management and communication skills
Must be eligible for SC or DV clearance
Must be a sole national of the United Kingdom, Italy, or Japan
Dual citizenship is not permitted
Nice to have:
Defence, government, or sovereign environment experience
Microsoft Purview and advanced compliance tooling
Multi-tenant / multi-geo architecture experience
Azure or M365 certifications (e.g. AZ-305, SC-300, MS-700)