Collin Roche has been involved in some of the most successful deals at Chicago private equity firm GTCR Golder Rauner ever since joining in 1996. But where the 33-year-old GTCR principal has particularly made a name for himself at the firm is in the transaction processing sector, including a number of automatic teller machine (ATM) and credit card processing deals such as Transaction Network Services and Skylight Financial. A source at one of Roche's portfolio companies calls him a good partner in the private equity business. “As his expertise overtime has become the transaction environment, he's done a nice job of evaluating the business. He's clearly focused and amiable, and he's a very persistent person when it comes to completing an objective.” Focused and amiable – good skills for a firm that specialises in wooing top CEOs to portfolio companies.