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Marc DekeyserMD

Marc Dekeyser

Azure & M365 Architect — Ex Microsoft Azure Engine

€800/day
Nijmegen, NL
15+ years

Average response time: 1 hour

About Marc

After 10 years at Microsoft — including 3 years inside Azure Engineering advising customers across the globe — I bring the institutional knowledge most consultants spend careers trying to approximate.

I've worked with 600+ organizations, from 5-person startups to enterprises with 150,000 users, across Azure, M365, security, governance, and compliance. I've helped a national bank cut €180,000 in annual cloud spend without touching their security posture.

I hold 54 Microsoft certifications. I know what good looks like because I helped define it.
  • Dutch

    Native or bilingual

  • English

    Native or bilingual

  • French

    Conversational

Can work on-site
Nijmegen (up to 50km)

Experience

  • Crimson Owl Technologies
    Founder
    CONSULTING AND AUDITS
    April 2025 - Today (1 year and 2 months)
    Running an independent practice focused on Azure, M365, security, and compliance architecture for clients who can't afford to get it wrong.

    Current engagements include: privileged identity and access management strategy for a High Secure environment, cross-regional SQL architecture for high availability and performance, Azure Recovery Services DR design, and update management modernization.

    Clients range from regulated enterprises to fast-scaling ISVs.
    IT-Security Microsoft Azure Compliance
  • Nationale Bank Belgie
    Cloud Solution Architect
    BANKING AND INSURANCE
    May 2025 - February 2026 (9 months)
    Brussels, Belgium
    Responsible for researching, designing, and optimizing the Bank's IT architecture across on-premise and cloud infrastructure in highly secure, regulated environments. Worked within a cross functional team to deliver standardized, scalable solutions aligned with IT strategy and Enterprise Architecture.

    - Reduced annual cloud spend by €180,000 through infrastructure optimization, without compromising security posture or scalability. Delivered in a DORA-regulated, high-security banking environment.

    - Designed and implemented an IT Asset Lifecycle Policy enforcing an n-1 version standard, reducing security exposure from end-of life software and ensuring consistent patching and upgrade cycles across the environment

    - Designed and documented infrastructure solutions and standards in collaboration with IT architects, security, service owners, and engineering teams — driving technology reuse and simplification across the organization
    Microsoft Azure IT-Security M365 Compliance
  • For the fun of it
    Public speaker
    January 2021 - Today (5 years and 5 months)
    - Digital Transformation Webcast Ask the Experts Azure Virtual Network Manager
    - Ready by Wortel Azure Networking in a Zero Trust World Azure
    - Platform Engineering Azure Networking & Azure Virtual Network Manager
    - Ask the Experts Azure Networking in a Zero Trust World Amplify Azure Open AI Services
    Microsoft Azure Compliance IT-Security

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Education

  • Graduate Degree: Informatica
    Graduate Degree: Informatica

Certifications

Skill set

Categories