John Callery – Biography
Last update: January 14, 2026Executive profile
John was Senior Vice President, Human Resources Strategy and Operations at Gartner, and Managing Director, Global Head of Workforce Strategy at BNY Mellon. John Callery joined Citadel in 2026.
John Callery is currentlyHead of People Operations at Citadel - View - Citadel org chart
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Education
John Callery has a Bachelor of Science in Applied Mathematics from Ohio State University and a Master of Science in Business Analytics from New York University - Leonard N. Stern School of Business.
They have also studied at Ohio State University :
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They have also studied at New York University - Leonard N. Stern School of Business :
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- At Citadel, John Callery has 65 colleagues including Kenneth Griffin (CEO & Co-Head, Investment), Andrew Philipp (CFO)…
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- In the Fund industry, John Callery has 30,040 colleagues in 1,643 companies located in 64 countries. 10,519 executive movements have been recorded in the last 12 months. Learn more about Fund.
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