Cathy Engelbert

Since 31-year company vet Engelbert took the helm 2½ years ago, the professional services firm has grown at a steady pace. Deloitte’s revenue has increased nearly 6% year over year to $18.6 billion, and the company has added 6,000 new employees. Engelbert’s focus this year has been on positioning Deloitte, which already serves 80% of the Fortune 500, as an “innovation catalyst.” To that end, she has established a number of strategic partnerships with big tech companies, including Apple, Amazon, Facebook, and HP.