Senior M365 Messaging & M&A Tenant Migration Architect

Cognitive Group | Part of the Focus Cloud Group

Paris

On-site

EUR 95,000 - 130,000

Full time

14 days+

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Job summary

Cognitive Group, part of the Focus Cloud Group in Paris, is seeking a Lead Architect to drive large-scale Microsoft 365 migration and transformation programmes. You will shape migration strategies, lead tenant-to-tenant moves and own Exchange/Messaging architecture within enterprise environments.

You will guide workshops, produce high-level designs and cutover plans, and provide technical leadership across delivery teams.

Qualifications

Must have lead experience in M&A, carve-in/out migration programmes.
Proven ability to scope and drive tenant-to-tenant migrations.
Strong Exchange On-Prem experience across 2010/2013/2016/2019.
Deep knowledge of mail flow, routing and coexistence strategies.
Experience with AD, Entra ID and hybrid identity architectures.

Responsibilities

Lead the architecture of Microsoft 365 migration and transformation programmes.
Design and deliver tenant-to-tenant migration strategies.
Own Exchange and Messaging architecture across complex enterprise environments.
Define coexistence, cutover and migration approaches.
Lead technical workshops with customers and stakeholders.
Produce architecture documentation including HLDs, migration strategies and cutover plans.
Provide technical leadership across delivery teams.