Think you're right for fintech? These are the four tests according to a Goldman partner who made the move. : Think you’re right for fintech? These are the four tests according to a Goldman partner who made the move. At a certain point in your sell-side career, you start to wonder whether the grass is greener on the buy side or in the financial technology space. A former senior investment banker now running a fintech company, Lawrence Calcano is well-qualified to speak to that issue.