Mastercard is an American multinational financial services corporation founded in 1979. Dana Lorberg, Executive Vice President of Operations and Technology at Mastercard, joined the company in 1987 and was part of a team that programmed and designed some of the early systems at Mastercard. We talked about how software was developed throughout her career and about examples of technical constraints that influenced how software was designed and implemented with performance and availability in mind. Dana also talked about leadership, management and building a good working culture.