M365 Project Manager

IT Project Manager – M65 Tenant Migration & Acquisition Integration (Contract)

Start in October 2026 is essential.

Microsoft 365 tenant migration and acquisition integration experience is essential.

Location: Stevenage and London but home working too!

Contract: 6-12 Months (Inside IR35)

Rate: £700 pay per day

We are seeking an experienced IT Project Manager to lead complex Microsoft 365 tenant migration and acquisition integration programmes . This is a high-profile role responsible for managing the end-to-end delivery of tenant-to-tenant migrations, ensuring seamless integration of users, devices, applications, collaboration platforms, and identity services following mergers and acquisitions.

The Opportunity:

You will lead M365 migration projects through the full lifecycle, from discovery and assessment through to migration, cutover, hypercare, and project close. Working closely with programme leadership, technical teams, business stakeholders, and third-party suppliers, you will ensure successful delivery with minimal disruption to business operations.

Key Responsibilities:

• Manage end-to-end Microsoft 365 and tenant migration projects.
• Lead discovery, assessment, design, build, testing, cutover, and migration activities.
• Own and manage project plans, schedules, milestones, dependencies, budgets, and resources.
• Drive governance, reporting, RAID management, and stakeholder communications.
• Coordinate internal teams, external vendors, and system integrators.
• Manage migration waves, readiness assessments, testing, and deployment activities.
• Produce executive-level reporting, dashboards, and steering committee updates.
• Identify and mitigate project risks, issues, assumptions, and dependencies.
• Ensure successful transition into hypercare and operational support.

Essential Experience:

• 8+ years' IT Project Management experience.
• Proven track record delivering acquisition, merger, and integration programmes.
• Extensive experience managing Microsoft 365 tenant-to-tenant migrations.

Strong knowledge of:

• Microsoft 365
• Entra ID / Azure Active Directory
• Exchange Online
• SharePoint Online
• Teams
• OneDrive
• Intune
• Endpoint Management
• Identity & Access Management
• Cyber Security controls
• Experience managing third-party suppliers and technical delivery partners.
• Strong governance, RAID, budget, and resource management expertise.
• Excellent stakeholder management and executive communication skills.

Desirable:

• PRINCE2 Practitioner, PMP, or Agile certifications.
• Microsoft certifications.
• Experience delivering M&A integration programmes.
• Experience working within regulated environments.

Ideal Candidate:

You will be a highly organised and delivery-focused Project Manager with a strong background in Microsoft technologies and complex enterprise migrations. Comfortable operating at both executive and technical levels, you'll be skilled at driving projects forward, managing competing priorities, and ensuring successful outcomes in fast-paced acquisition and transformation environments.

Apply Now!

If you have a proven history of delivering Microsoft 365 tenant migrations, acquisition/or integrations, and complex enterprise IT Projects , we'd love to hear from you. Please submit your CV outlining your relevant M365 experience and availability.