Nancy Dornbush is a Managing Director and the Head of Services for Arcesium. During her 19 years at the D. E. Shaw group, Nancy was Head of Trade Accounting and Operations, Pricing, Liquidity and Collateral Management, and Middle Office. She was actively involved in the development of the D. E. Shaw group's accounting and operational infrastructure. She started her career as a CPA at Ernst & Young and spent time at J.P. Morgan in a business controller group.