Reliable IT Interim Management & ITSM Expertise

Helping organizations strengthen IT operations, streamline service management, and stay compliant.

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About Me

Hi, I’m Dietwin Betlem, an experienced IT professional specializing in IT Interim Management, IT Service Management (ITSM) process design, and Risk, Security & Compliance. With a strong background in IT operations and service delivery, I help organizations improve efficiency, strengthen compliance, and align IT strategy with business goals. I believe in a hands-on and pragmatic approach — turning complex IT challenges into practical, measurable solutions that deliver real business value.

Reliable IT Interim Management & ITSM Expertise

IT Interim Management, Service (Delivery) Management

Providing temporary leadership and direction for IT departments to ensure stability, continuity, Improving and successful transformation during critical transition periods.

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ITSM Framework Design

Providing temporary leadership and direction for IT departments to ensure stability, continuity, and successful transformation during critical transition periods. Building and implementing ITIL/ISM Processes

Risk, Security & Compliance

Supporting organizations with IT risk management, data protection, and compliance frameworks such as ISO 27001, GDPR, and internal governance standards.

Quarter Mastery on large transition, onboarding projects

Creating and maintaining landing zones in the new organisation to help building new teams Making all parties involved working with each other and identifying common ground and values

Making the right choise acquiring 3d Party IT services

Outsourcing or doing it yourself with some Managed Services? Cloud or local, SaaS or PaaS?
We help you make the right decision for the long run.

Work Experience

May2024 - Present
Owner
BSD Advies & Interim
  • Experienced IT and Service Delivery Consultant
  • Broad background in outsourcing and security
  • Operational, policy-driven and strategic expertise
  • Applies experience to tenders, onboarding and
    transformation projects
Nov 2024 - Present
Conclusion/Quanza/RWS
SDM, security
  • Active as Risk Manager, Quartermaster, ITIL Process
    Manager, and SIM Manager on Large Mission Critical
    account.
  • Supervised a Large-contract where ITIL processes
    were integrated into a SIAM framework.
  • Established and staffed a Change Office, including
    implementation of new security measures and
    controls
Nov 2021 - Nov2024
Service Delivery Manager
Large Accounts
  • Management of complex, high-value portfolios with
    strategic impact
  • P&L responsibility across multiple accounts, closely
    involved in business cases and governance
  • Bridge between clients, suppliers, and internal
    teams
Nov 2018-2021
Captain of Services
Wortell
  • Leadership role in a fast-growing organization; team
    expanded from 30 to 90 employees
  • Managed the Service Management Team (9 people)
2006 - 2014
BT Global Services
SR. Service Account Manager & Operational team lead
  • End-to-end operational responsibility for Regio
    College Zaanstad
  • Full autonomy with a permanent team of six
  • Pre-sales activities, tender management, Due
    Diligence
  • Project management
  • Tactical and operational contact for all assigned
    customers
2002 - 2006
Service Manager
Syntegra SCN
  • Responsible for all services delivered from the
    Syntegra Group portfolio in co- and outsourcing
    and managed services
  • Pre-sales activities
  • Reporting and project management
  • Creation of sales leads
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Skills

Teambuilding
90%
Creating shared values and common ground
100%
IT Interim Management
95%
IT Service Management (ITSM)
90%
Process Design & Optimization
88%
Process Design & Optimization
88%
Risk Management & Compliance
92%
IT Strategy & Transformation
88%

Languages

Dutch
100%
German
82%
English
90%
Spanish
43%

Education

  • SPD Bedrijfseconomie — 1993
  • HAVO — 1984-1986
  • Praktijkdiploma Boekhouden (PDB) Moderne Bedrijfsadministratie (MBA) — 1988-1990
  • LBO Electro — 1980-1984

Let's Connect

Looking for an experienced IT professional to support your organization’s next phase of growth or transformation?
Let’s connect and discuss how I can help.

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