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Marien LahayML

Marien Lahay

Modern Workplace Consultant | Microsoft365 Intune

€650/day
Pau, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Marien

Over 10 years of experience in the Microsoft ecosystem, with a specialization in enterprise Modern Workplace environments.

I primarily focus on:

- Managing and securing device fleets via Microsoft Intune — up to 3,000 devices in production (Windows, Android, iOS)
- M365 deployments and adoption support
- Entra ID Administration — Conditional Access, MFA, compliance, audit
- Exchange Online, SharePoint Online, Teams Administration
- Automation via PowerShell
- 802.1X implementation and on-premise PKI management

Sectors: Healthcare · Automotive · Major Telecom Accounts

Available for ad-hoc full remote missions.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Edenauto Groupe Automobile
    M365 & Intune Administrator | Endpoint · Entra ID · Exchange · SharePoint
    April 2023 - Today (3 years and 4 months)
    Pau, France
    Administration of the Microsoft 365 environment for the Edenauto group.

    Endpoint Management
    • Managed a fleet of 3,000 devices via Microsoft Intune
    • Deployed compliance and security policies (MDM/MAM, Conditional Access, encryption)
    • Configured profiles, applications, and updates via Endpoint Manager

    Identity & Access
    • Entra ID Administration — users, groups, roles
    • MFA and Conditional Access policy management

    Messaging & Collaboration
    • Exchange Online, Teams, SharePoint Online Administration

    Automation
    • PowerShell scripts for administration and reporting

    Stack: Microsoft 365 · Intune · Entra ID · Exchange Online · SharePoint Online · Teams · Azure · PowerShell

    Notable Projects:

    Fleet Modernization
    • Migration of Windows, Android, and iOS to Microsoft Intune
    • Full cloud deployment via Windows Autopilot
    • Configuration, compliance, and application packaging

    Integrations during acquisitions
    • Integration of Windows and mobile devices
    • Mail domain migration and online archiving

    Network & Identity Security
    • 802.1X implementation with on-premise PKI management
    • User and machine certificates via Intune
    • Entra ID, Entra Apps, and Conditional Access audit

    Automation & Productivity
    • Power Automate Flows · SharePoint · Exchange Online
    • Kiosk mode device management (Android & Windows)
    Microsoft Intune Microsoft365 Powershell Microsoft Entra ID Windows Autopilot
  • METSYS
    Systems Administrator - Modern Workplace
    January 2021 - April 2023 (2 years and 3 months)
    On-site missions for major and mid-sized companies.

    Main Mission — Orange Business Services (18 months)
    • Large-scale Microsoft 365 deployment
    • Adoption support for user populations
    • Azure Information Protection (AIP) implementation — data classification and protection

    Mission — Edenauto Automobile Group (5 months)
    • Design and development of a dynamic on-premise security group population system
    • PowerShell script driven by Excel file for automated group management via AD attributes
    • Global AD / Entra ID remediation and operational maintenance

    Stack: Microsoft 365 · AIP · Azure AD · PowerShell · Active Directory
    Powershell Microsoft365 Microsoft Entra ID Active Directory
  • LNA Santé
    Networks and Systems Analyst
    November 2013 - December 2020 (7 years and 1 month)
    Nantes, France
    Advanced Windows PowerShell scripting (advanced training ENI Services):
    - Workstation/Server Operations
    - Report/Dashboard Generation
    - Solution Administration (O365, Intune, PRTG...)

    Office 365 Administration (advanced training ENI Services):
    - User/License/Mailbox Management
    - Security Administration
    - Teams Management
    - Flow management and enterprise task automation

    Azure AD Administration
    - AzureADUser Administration
    - Compliance and security management

    Intune/MDM Administration
    - Master image creation for mobile devices/tablets
    - Complete fleet management via Intune/MDM
    - Application, compliance, and security management

    PowerBI Self-taught:
    - Creation and management of PBI team dashboards
    - Dashboard creation with GLPI (ticketing tracking)
    - Dashboard creation with SCCM (hardware tracking)
    - Dashboard creation with AD (user account tracking)
    - Dashboard creation with O365 (Azure/O365 platform tracking)
    - Connector management with Databases (SQL, MariaDB, OBCD, etc...)

    AD Management:
    - AD account management
    - Rights and security group management
    - Hardware management and GPO deployment (via OU)

    Supervision Management:
    - Map and Library creation on PRTG
    - Automation of actions via scripts on events

    SCCM Management:
    - Workstation Operations

    User issue resolution level 2 in local Windows or Citrix environments.

    Network Analysis

    ToIP, VoIP management on IT infrastructure
    Powershell Microsoft Intune Microsoft365

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