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Carlos MejíaCM

Carlos Mejía

M365 Workplace, Security, and Migration Consultant

€400/day
Madrid, ES
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Carlos

I help companies secure, govern, and optimize Microsoft 365 to work better and with less risk. I specialize in Modern Workplace and M365 Security: Intune, Microsoft Defender, Entra ID, Microsoft Purview (Compliance), and tenant-to-tenant migrations (mergers, acquisitions, restructurings).

My added value is combining a security vision (Zero Trust) with technical execution: I land a realistic plan, implement it in phases, and leave the environment documented so the team becomes autonomous. I work with a business focus, minimizing user impact and ensuring continuity.

Common projects and deliverables:

M365 Assessment (risks, gaps, quick wins) + security and governance roadmap

Design and implementation of policies in Intune (compliance, configuration, apps, endpoint security)

Hardening and protection with Microsoft Defender (XDR/MDE) and security recommendations

Governance and compliance with Microsoft Purview: labels, DLP, retention, auditing, and baseline policies

Tenant-to-tenant migrations: phased planning, coexistence, Teams/SharePoint/OneDrive migration, validation, and post-migration support

Adoption and governance of Teams and SharePoint (structure, permissions, lifecycle, best practices)

If you are looking for a profile that “speaks Microsoft” and helps you reduce risk, improve compliance, and execute migrations without drama, I can support you end-to-end: from diagnosis to implementation and handover to operations.
  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • MSAdvance (Freelance)
    M365 & Security Consultant | Intune, Defender, Migrations
    January 2014 - Today (12 years and 5 months)
    Madrid, Spain
    Consulting and project execution in Microsoft 365 with a focus on security and modern workplace: Intune, Microsoft Defender, policy configuration, hardening, and adoption. Design and support M365 environment migrations and consolidations, providing planning, controlled execution, validation, and handover to operations. Certifications: SC-100, SC-200, AZ-104, AZ-305.
    Microsoft Intune Microsoft 365 Migration Microsoft Defender Microsoft Purview Microsoft Entra ID
  • MSAdvance (Servicios gestionados / Operación)
    Intune & Endpoint Security Engineer | Modern Workplace
    January 2020 - Today (6 years and 5 months)
    Administration and improvement of Microsoft Intune: enrollment, compliance, configuration, profiles, application deployment, security policies, and workstation standardization. Integration with M365 identity and security, conditional access control, and focus on incident reduction. Documentation, training, and support for internal teams to ensure adoption and operational continuity.
    Intune Microsoft Intune Microsoft Entra ID Data migration and backup Mail migration
  • MSAdvance (Seguridad)
    SharePoint & Teams Consultant | Governance and Adoption
    January 2017 - Today (9 years and 5 months)
    Implementation and improvement of SharePoint Online and Microsoft Teams: site structure, permissions, collaboration best practices, governance (naming, lifecycle, ownership), templates, and space organization. I support users and managers in adoption, training, and support, focusing on productivity and information control, reducing document chaos, and improving the team collaboration experience.
    Microsoft Purview Microsoft Teams SharePoint Online IT Consulting Microsoft Entra ID

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Education

  • Degree in Information Systems Engineering
    University of Alcalá (UAH)
    2008

Certifications

  • Microsoft Certified: Azure Solutions Architect Expert (AZ-305)
    Microsoft
    2026
  • Microsoft Certified: Cybersecurity Architect Expert (SC-100)
    Microsoft
    2025

Skill set

Categories