M365 Architecture & Engineering Lead

Salary: £64,000 - 104,000 per year

Requirements:

• Expert M365 architecture and engineering experience across Exchange, Teams, SharePoint, Copilot, Copilot Studio, Power App/Automate, Power BI/Fabric, Defender, and Purview.
• Working knowledge of enterprise identity platforms, specifically Okta, and how M365 workloads integrate with them.
• Ability to provide architectural guidance on conditional access, authentication flows, hybrid connectivity, and Zero Trust principles without directly owning the identity platform.
• Large-scale tenant migration and integration design experience at 100,000+ seat scale, including hands-on use of tools such as ShareGate or Microsoft native migration tooling.
• Experience with Microsoft Graph API, PowerShell scripting, and automation at enterprise scale for M365 administration and deployment.
• Proven ability to produce and own architecture documentation, HLDs, LLDs, architecture decision records, and reference architectures as the recognised design authority.
• Proven vendor governance experience, including oversight of large managed service providers and holding partners accountable to contractual SLAs and agreed design standards.
• Microsoft 365 Certified: Enterprise Administrator Expert (MS-102, or legacy MS-100/MS-101) is essential.
• Microsoft 365 Certified: Security Administrator Associate, Microsoft Certified: Azure Solutions Architect Expert, or Microsoft Certified: Cybersecurity Architect Expert are highly desirable.
• Architecture framework qualification such as TOGAF 9/10 or equivalent is advantageous.
• Technical leadership and design authority experience at enterprise scale in the relevant domain.
• Relevant architecture or platform certifications, such as TOGAF or vendor architect tracks, are preferred.
• A degree in a relevant discipline or equivalent experience.

Responsibilities:

• Own the M365 architecture, standards, and engineering roadmap.
• Lead and manage the M365 architects and senior engineers.
• Design and assure complex M365 change and migrations.
• Assure third-party support provider designs and changes to our standards.
• Embed security, resilience, and compliance by design.
• Provide senior technical escalation above the run layer.
• Set the architecture, patterns, and guardrails that our partner implements and operates within.
• Assure that partner-delivered designs and changes meet our security, resilience, and standards.
• Act as design authority and approval gate for partner architecture decisions.
• Set the target architecture, standards, and design patterns for the domain.
• Design for security, scale, resilience, and total cost of ownership.
• Influence engineering and vendor teams without direct authority.
• Balance strategic ambition with pragmatic, deliverable decisions.
• Stay current with platform direction and emerging capability.

Technologies:

• API
• Architect
• Azure
• Copilot
• Fabric
• Support
• Marketing
• Microsoft 365
• Power BI
• PowerShell
• Security
• SharePoint
• TOGAF
• Office 365
• Cloud

More:

We are WPP, a global growth partner for leading brands, bringing together media intelligence, data solutions, creativity, production, enterprise solutions, and strategic counsel through our agentic marketing platform, WPP Open. We operate across 100+ markets with deep local expertise and a culture focused on creativity, belonging, and continuous learning. WPP Enterprise Technology provides technology services for WPP, supporting the future of our clients through extraordinary work. This role sits within our M365 environment and offers the opportunity to lead architecture and senior engineering for complex platform change. We offer scale, opportunity, and challenging work in a hybrid environment, with teams in the office around four days a week. We are committed to inclusion, respect, and equal opportunity for all applicants.

last updated 36 week of 2026