A boutique risk services company

Dedicated to sustain business integrity

As we have many years of experience at the level of investment teams, compliance and senior management, throughout the investment chain, we understand the needs of our clients.

We are the DeFinIrs

Mitch Gersen and Han Zevenhuizen are the founding partners of DeFinIrs. With, together, more than 25 years of experience in integrity risk management throughout the development financing industry.

Han Zevenhuizen

Founding Partner
+31 6 8179 4292

Mitch Gersen

Founding Partner
+31 6 2042 3993

Han Zevenhuizen – Founding Partner

Over 20 years experience in the financial industry, in various leading positions including supervisory board positions. Han has broad and in-depth expertise in stimulating and ensuring a culture of integrity and compliance risk awareness throughout organisations including their value chains. From strategy to execution, with focus on enabling employees and achieving operational excellence. With a background as former regulator and certified public auditor, Han enriched his view on the value and impact of an organisation and its stakeholders, in their social and corporate context.

Mitch Gersen – Founding Partner

With more than 10 years of experience in the financial industry, Mitch has built expertise in balancing the interplay between business strategy and compliance requirements, showcasing a blend of pragmatism and efficiency. Having lived and worked in multiple countries, he brings a cross-cultural perspective to his expertise.


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