Zekraus is based in Scotiabank's New York office and reports to John Stracquadanio, global head of prime services.
Scotiabank declined to comment.
Zekraus was previously director in prime services at Barclays where he headed up the US securities lending desk. After being with the bank for 15 years, he left in February.
Before Barclays Zekraus worked on the securities lending team at Daiwa Securities.