Programme Manager - M365 - Tenancy Migrations

IT Programme Manager - M365 Tenant Migration & complex Business Integration

(Large and very complex Microsoft 365 tenant migration experience is an essential requirement for this role)

Contract | Hybrid – Stevenage and London site attendance necessary

Up to £900 per day – INSIDE IR35 - some home working too

***Start October 2026 is essential***

Ideal Background needed:

You will have successfully led enterprise-scale tenant migrations involving users, devices, applications, data, identity, security, and infrastructure, ideally within a fast-paced acquisition or business integration environment.

We are seeking an experienced IT Programme Manager to lead a major acquisition-related Microsoft 365 tenant migration and business integration programme . This is a high-profile leadership role responsible for delivering a complex portfolio of work covering discovery, migration, integration, deployment, and operational transition.

Working closely with the CTO, Programme Director, business stakeholders, and delivery teams, you will drive programme governance, manage multiple workstreams, oversee third-party suppliers, and ensure successful delivery to time, budget, and quality objectives.

Key Responsibilities:

• Lead a large-scale Microsoft 365 tenant migration programme.
• Manage multiple projects and workstreams within an acquisition/integration environment.
• Own programme planning, governance, RAID management, budgeting, and reporting.
• Coordinate business, technology, security, and supplier teams.
• Deliver executive-level reporting and stakeholder engagement.
• Oversee migration readiness, cutover planning, deployment, and operational handover.
• Manage programme risks, dependencies, resources, and financial performance.

Essential Experience:

• 8+ years' Programme Management experience.
• Proven delivery of large-scale Microsoft 365 tenant migrations.
• Strong experience of acquisitions, mergers, integrations, or separation programmes.
• Management of complex enterprise transformation or migration programmes.
• Multi-million-pound budget responsibility.
• Strong governance, PMO, and RAID management expertise.
• Experience managing third-party suppliers and systems integrators.
• Excellent stakeholder management with exposure to C-suite executives.

Preferred Qualifications:

• MSP Practitioner
• PRINCE2 Practitioner
• Agile Practitioner
• ITIL Foundation/Practitioner