Darren is Managing Director of Calculus Capital. He served articles at Fisher Hoffman Sithole from January 1994 to December 1996 and qualified as a chartered accountant in December 1996. He spent 17 months in the corporate finance department of N M Rothschild & Sons (South Africa), focusing on international merger and acquisition transactions.

Darren joined Peregrine in May 1998 where he was a director of Peregrine Investment Banking and focused on the group's private equity portfolio. Darren has been responsible for a number of highly successful private equity and venture capital transactions as well as new listings. Darren partnered with Genesis Capital in August 2006 to form Calculus Capital.