The youngest member of Goldman's newest class of managing directors is 29 years old. Paulo Costa, promoted Thursday, is based in London and spoke to Business Insider about making MD. The trader leads dividend trading in Goldman's synthetic products group in EMEA. By early Thursday afternoon, cheers celebrating Goldman Sachs' newly promoted managing directors had been mounting for hours throughout the firm's London office. Paulo Costa heard the trader across from him — whose last name starts with a ...