Hesslein has served as Voyager’s General Counsel since 2019. Prior to joining Voyager, he served as General Counsel at Foundation Medicine and as Deputy General Counsel at Genzyme. Hesslein also served as the Vice President-Associate General Counsel at The New England. He began his legal career at Csaplar & Bok, where he worked as an associate and as a partner. Hesslein received a B.A. in urban studies from Yale University and received his J.D. from The Cornell Law School.