India, Dec. 6 -- Umesh Subramanian, Indian-origin chief technology officer (CTO) of Citadel, has revealed that he personally calls some of the most sought-after candidates, including recent graduates, during the decision-making process to see where their head is at.

Subramanian leads the technology teams that power Citadel's investment, research and risk-management platforms. Speaking to Business Insider, he said, "I get on the call with them to understand how they're going to make the decision - what is driving their decisions." "And oftentimes we win those candidates," he added.

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