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M365 Senior Project Manager – M365 Tenant Consolidation

Job in Southampton, Hampshire County, SO15, England, UK
Listing for: Experis UK
Full Time position
Listed on 2026-09-12
Job specializations:
  • Management
    IT Project Manager, Change Management
Job Description & How to Apply Below

We’re supporting a major enterprise transformation programme and are looking for a Senior Project Manager to lead delivery of a large-scale Microsoft 365 tenant consolidation
.

This is a high-impact role managing a complex multi-workstream migration across identity, Exchange, SharePoint, One Drive, Teams, devices, security, and migration tooling
. You’ll take ownership of delivery across multiple suppliers and senior stakeholders, driving structure, pace, and control throughout the programme.

Key Responsibilities:

  • Lead delivery of a complex Microsoft 365 tenant consolidation programme
  • Manage scope, roadmap, RAID, dependencies, and delivery milestones
  • Coordinate multiple suppliers, partners, and technical stakeholders
  • Oversee key work streams across identity, messaging, collaboration, devices, and security
  • Drive governance, reporting, and executive-level updates
  • Ensure migration plans, sequencing, and readiness activities are aligned and delivery-ready
  • Challenge delays, resolve blockers, and keep the programme moving

Required Experience:

  • Strong understanding of Exchange, SharePoint, One Drive, Teams, identity, endpoint, and security dependencies
  • Experience working across multiple suppliers in complex environments
  • Strong control of scope, risk, governance, documentation, and programme delivery
  • Able to translate technical challenges into clear delivery decisions
  • Experience with tenant-to-tenant migrations or M365 tenant consolidation
  • Experience delivering multi-year phased migration programmes
  • Exposure to large, complex enterprise environment
  • PAYE Contract
  • Remote, UK

Please apply for immediate consideration.

Position Requirements
10+ Years work experience
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