[2][4] Oyler began his career as a consultant at McKinsey & Company, which often involved traveled to China.
[5] During his time at McKinsey, he earned an MBA degree from Stanford University and continued to work there after graduate school.
At Genta, Oyler hired new management and grew the company's valuation from a few million dollars to $1.7 billion.
In 1998, Oyler was a founder of Telephia, a telecom research company where he served as president.
[8] Oyler was also headed Galenea, a company focused on treatments for psychiatric diseases,[9] from 2002 to 2004.