John Macdonald

John MacDonald is an experienced professional who currently holds the position of Chief Technology Officer & Partner at GSR. Prior to this role, John worked at Citadel Securities as a Managing Director and Chief Technology Officer for Europe. Before joining Citadel Securities, John served as a Managing Director at JP Morgan and gained experience in options market making at Citadel Investment Group. John began their career in technology at Goldman Sachs. John is a graduate of the University of Oxford.