01 / About

I build internal audit functions for complex, technology-driven financial businesses. My work turns emerging risks, regulation, and operational detail into useful assurance for management, boards, and audit committees.

At Deribit, I established the Internal Audit Function as the business moved from an unregulated crypto business to a licensed Virtual Asset Service Provider in Dubai. That meant helping move the organisation from informal control ownership to a clear second and third line of defence.

Across 20 years in financial statement audit, internal audit, and risk management, I have worked with banks, asset managers, pension funds, trading firms, fintechs, and digital-asset businesses. I also build dashboards, data visualisations, and interactive reports that make audit work easier to plan, execute, and explain.

Earlier work at KPMG covered two distinct sides of the profession: financial statement audit for financial-services clients, followed by Advisory work in internal audit and risk management. That distinction still shapes how audit plans are built, evidence is assessed, and findings are explained.

20+
Years across audit, risk, and assurance
VARA
Fit & Proper approval
IIA
Audit functions built to IIA Standards
  • Certified Public Accountant
  • VARA Fit & Proper approval
  • Certified Internal Auditor

02 / Experience

01

Deribit

Current role · Digital assets

Internal audit leadership

Head of Internal Audit

Full-time

Amsterdam, Netherlands · Hybrid

Built and lead the Internal Audit Function as Deribit moved from an unregulated crypto business to a licensed Virtual Asset Service Provider in Dubai. The work has included establishing independent assurance, defining a risk-based plan, and helping move the organisation toward a clear second and third line of defence.

  • Worked across KYC/AML, information security, IT risk, software development, backup and recovery, and digital-asset custody.
  • Translated regulatory expectations into audit coverage, control testing, and reporting for management and the regulator.
  • VARA vetted and approved me as a Fit & Proper person and formally registered me with the regulator.
02

Optiver

Trading and market infrastructure

Internal audit

Group Internal Audit Manager

Full-time

Amsterdam, Netherlands

Led internal-audit work in a fast-moving trading environment, covering trading processes, risk management, and regulatory obligations under IFR/IFD.

  • Audited exercise and assignment, dividend-stripping prevention, business development, and risk management.
  • Used data and analytics and introduced tooling for audit execution and reporting.
  • Contributed to an external quality assessment against IIA Standards.
03

KPMG Netherlands

16 years · two distinct practices

Advisory · Internal audit and risk management

Senior Manager, Internal Audit & Risk Management Services

Advisory

The Randstad, Netherlands

Worked in KPMG's Advisory practice, helping financial-services and fintech clients build and mature internal-audit and risk-management capabilities. Advised boards and audit committees and served as a part-time Head of Internal Audit for smaller institutions.

  • Set up and developed internal-audit functions in line with IIA Standards.
  • Led external quality assessments and reviewed governance, risk, and control frameworks.
  • Worked across banks, asset managers, pension funds, trust and fiduciary providers, payment service providers, and telecom companies.

Audit · Financial statement auditing

Manager, Financial Statement Audits

Audit

The Randstad, Netherlands

Worked in KPMG's financial statement audit practice, primarily with financial-services clients. I progressed from junior trainee to manager while completing part-time Accountancy studies at Nyenrode.

  • Audited banks, investment managers, investment funds, pension funds, and structured finance entities under Dutch GAAP, IFRS, and US GAAP.
  • Delivered assurance engagements under ISAE 3402, ISAE 3000, SOC 1, SOC 2, and SAS 70.
  • Used SQL, Python, and data visualisation in early audit analytics projects.
04

KPMG Global Services

International secondment

Secondment · Audit delivery

Dutch Department Coordinator

Full-time

Delhi / Gurgaon, India

Coordinated the Dutch department within KPMG Global Services in Gurgaon and supported audit work for Dutch financial-services clients across teams in India and the Netherlands.

  • Coordinated audit procedures, planning, quality reviews, and knowledge transfer.
  • Helped connect local audit teams with the global delivery centre.
05

Tilburg University

Parallel teaching

Teaching · Internal auditing

Part-time Lecturer

Part-time

Tilburg, Netherlands · On-site

Alongside audit and internal-audit work, taught internal auditing in the Post-Master Accountancy programme. The course covered the relationship between internal and external audit, assurance, governance, and how external auditors rely on internal audit under ISA 610.

  • Used practical internal-audit examples to teach assurance, risk, and governance.
  • Discussed audit coordination, independence, and professional judgement with future auditors.

03 / Selected work

These projects show how I turn complex audit work into clear management views, useful reporting, and better follow-up.

Featured project / 01

Internal Audit Management Dashboard

This is the clearest example of how I turn a complex audit portfolio into a useful management view. It brings audit status, phase progress, issue context, and follow-up into one place.

  • Portfolio view across audit themes
  • Phase and status tracking
  • Issue context and drill-down routes
Open dashboard
Preview of the internal audit management dashboard
02

Audit Data Visualisation

Data visualisation applied during audit work to surface weaknesses in the control environment and support clearer reporting.

Open visualisation
03

Internal Audit Dynamic Report

Interactive report for presenting audit findings, context, and follow-up actions.

iadr.tingelaar.com

04 / Education

BSc · MSc · Post-Master, Accountancy

Nyenrode Business University

Completed the BSc, MSc, and Post-Master in Accountancy part-time while working toward the Registeraccountant qualification. Coursework covered financial reporting, auditing, business economics, ethics, law, and risk management.

Certified Internal Auditor (CIA)

The Institute of Internal Auditors (IIA)

Earned the Certified Internal Auditor credential in 2018, with a focus on the IIA's International Standards, risk management, and governance.

05 / Expertise

Audit and assurance

  • Internal audit function setup and expansion
  • IIA Standards
  • External quality assessments
  • Risk-based auditing
  • ISA 610
  • ISAE 3402 / 3000
  • SOC 1 / SOC 2

Governance and risk

  • Three lines of defence
  • Risk management
  • Governance and control frameworks
  • Audit committee and board advisory
  • Regulator engagement

Domain expertise

  • KYC / AML
  • Information security
  • IT risk and controls
  • Software development lifecycle
  • Digital-asset custody
  • Market, credit, and model risk
  • MiFID · IFR / IFD · PSD2
  • SOX · ICFR
  • DORA · GDPR · AMLD

Data and technology

  • Data analytics
  • AI
  • SQL
  • Python
  • Data visualisation
  • Audit tooling