Joost Siemensma

Joost (1972) is the founder of SINCERIUS. After his studies in business economics at Erasmus Universiteit in Rotterdam and having gained experience at KPMG and Deloitte (in Amsterdam as well as London), het set course in a different direction.

I wanted to do it differently, to add value instead of billing hours”.

Joost has more than 20 years of experience in the field of financial due diligences (“Transaction Services”). During this period he worked on acquisitions in various sectors for private equity as well as strategic clients.

Previously Joost has been a partner at Grant Thornton, where he was responsible for the financial due diligence practice. He also worked for Deloitte Transaction Services (Amsterdam and London) and KPMG (Amsterdam).

Joost has a major in Business administration and post graduate accountancy from the Erasmus University Rotterdam.