M365 Architect

Microsoft 365 Architect (Exchange, SharePoint, Teams) Location: London (Hybrid)
Sector: Defence | Government Projects
Working Model: Agile / DevOps

Eligibility & Clearance – Essential Due to the secure nature of this role:

• 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

Applications that do not meet these criteria cannot be considered.

The Role 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.

Key Responsibilities

• 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

Desirable

• 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)