In 2019, John established Tasso Capital. Over the past four years, John has been working for several tech start-ups in an investor relations capacity as they raise capital. Prior to creating Tasso Capital, John Marshall served as the Ontario Assistant Deputy Minister of the Research and Commercialization Division with the Ministry of Economic Development. Prior to serving as ADM, John founded the Ontario Capital Growth Corporation (OCGC) and served as its inaugural CEO for 8-years. OCGC established the $115M Ontario Venture Capital Fund in June 2008 and was the lead LP in the $300M Northleaf Venture Catalyst Fund.