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Jeremy B.JB

Jeremy B.

Expert Microsoft 365 & Google Workspace Migration

€600/day
34 projects
Paris, FR
8-15 years

Average response time: 24 hours

Freelancer profile translated to English.
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About Jeremy

Cloud Architect & Outsourced IT Manager – Microsoft 365 & Google Workspace Migration Specialist

Are you preparing a migration to Microsoft 365 or Google Workspace?
Has your current environment become complex, unstable, or poorly documented?

✅ For nearly 10 years, I have been assisting SMEs with their IT system migration, structuring, and security projects.
✅ I often intervene in high-stakes contexts: rapid growth, mergers, reorganizations, changes in collaborative tools.

+1200 users migrated to Microsoft 365 & Google Workspace
+30 migration projects managed end-to-end
No data loss observed
Migrations carried out without critical interruption

🚀 I mainly work on:
  • Migration to Microsoft 365 or Google Workspace
  • Tenant-to-tenant migration (mergers, divestitures, reorganizations)
  • Overhaul of collaborative architectures
  • Implementation of backup and disaster recovery strategies
  • Access security (MFA, identity management, security policies)
  • Structuring of heterogeneous cloud environments
My added value: a methodical, documented, and risk-oriented approach, designed to avoid unpleasant surprises.


🔎 Each project follows a clear methodology:
  • Detailed audit of the existing system
  • Risk identification and development of a migration plan
  • Technical management and stakeholder coordination
  • User support and training
  • Post-migration stabilization and documentation
I don't just focus on technical execution; I bring a global vision to ensure a controlled, documented, and sustainable transition.

Usual deliverables:
– Infrastructure audit
– Detailed migration plan
– Technical documentation
– Security procedures
– Post-migration startup support
I can also act as an outsourced IT referent to ensure the continuity and evolution of your environment after the migration.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Italian

    Basic

  • German

    Basic

Can work on-site
Paris (up to 50km), Bordeaux (up to 50km), Lyon (up to 50km), Rennes (up to 50km), Marseille (up to 50km)

Experience

  • Rejence SAS
    Malt logoOn Malt
    OVH to MS365 Data Migration + Google Workspace to MS365
    FASHION AND COSMETICS
    July 2026 - July 2026
    Migration of the collaborative ecosystem (OVH/Google to Microsoft 365)

    Mission Objective:

    Complete migration of Rejence SAS's IT environment from OVH and Google Workspace to Microsoft 365 (Exchange Online, SharePoint, OneDrive), to improve email reliability and modernize document management.

    Key Achievements:

    • Technical Configuration: Microsoft 365 tenant setup and email flow security through the implementation of SPF, DKIM, and DMARC protocols.
    • Data Migration: Full transfer of emails and files from Google Drive to dedicated departmental SharePoint sites.
    • Collaborative Structuring: Setup of shared mailboxes for managing transactional flows and third-party applications.
    • SharePoint/OneDrive Deployment: Organization of SharePoint workspaces and configuration of OneDrive synchronization on user workstations to ensure data access.
    • Support and Assistance: Technical support for users in configuring access (Outlook/OneDrive) and resolving issues related to Microsoft instances.
    OVH Microsoft 365 Data Migration Google Workspace
  • DCArchitectures
    Malt logoOn Malt
    MS365 Migration Correction
    April 2026 - May 2026
    Mission Objective:

    Technical support for DC Architectures for the migration of their email service from Hostinger to the Microsoft 365 environment, aiming to modernize collaborative tools and optimize access management.

    Key Achievements:

    • Initial Technical Configuration: Access and configuration of the Hostinger administrator account via TeamViewer to prepare data transfer and validate domain access.
    • Email Structuring: Optimized configuration of the "Agency" mailbox as an alias to simplify account management while ensuring continuity of reception.
    • DNS Migration and Switchover: Complete migration of emails from Hostinger to Microsoft 365 and modification of DNS settings to redirect incoming mail flow.
    • Mobility and Access: Deployment and configuration of the Outlook application on mobile devices (iPhone/iPad) to ensure access to emails and calendars on the go.
    • Finalization and Support: User support for workstation configuration and post-migration service continuity.
    Microsoft 365 Data Migration
  • Guilbert Signalétique
    Malt logoOn Malt
    Migration to Google Workspace
    ARCHITECTURE AND URBAN PLANNING
    March 2026 - April 2026
    Migration of the collaborative ecosystem (Microsoft 365 to Google Workspace)

    Mission Objective:
    Comprehensive support for Guilbert Signalétique in transitioning its work environment from Microsoft 365 to Google Workspace to optimize collaboration, data security, and email management.

    Key Achievements:

    *Email Migration and Restructuring:Migration of user accounts and cleanup of obsolete addresses. Implementation of an alias system to ensure communication continuity.

    *Shared Mailbox Optimization:Creation and configuration of shared mailboxes with fine-grained access control and delegation for teams, improving email clarity.

    *File Storage Modernization:Implementation of Shared Drives (Google Shared Drives) to replace local storage solutions (NAS). Centralization of company data to ensure intellectual property and facilitate collaborative work.

    *Communication Security:Full configuration of domain security protocols (SPF, DKIM, DMARC) and deployment of two-factor authentication (2FA) across the entire tenant to protect access.

    *Business Tool Integration:Audit and reconfiguration of external software to ensure compatibility and proper functioning with the new Google Workspace instance.

    *Change Management Support:User support during the transition phase (migration weekend) and development of documentation to facilitate the adoption of new collaborative tools
    Google Workspace Microsoft 365 Data Migration

Reviews

5.0

Out of 20 ratings

A

Alexandre

Direction - Rejence SAS

Reviewed on 7/9/2026

Jeremy was highly professional, reassuring, and responsive. He managed the project from start to finish.
P

Paul

Président Guilbert Signalétique - Guilbert Signalétique

Reviewed on 6/12/2026

Jérémy is attentive, very efficient, and very serious.

Recommendations

SP
TR
JC
+2
Sylvie Polette and 4 other people have recommended Jeremy

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Education

  • PhD
    EHESS
    2021

Skill set

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