Jefferson Song is currently the Director of Software Engineering at Fidelity Investments, where they build the fidelity.com online brokerage system. Previously, they served as a Staff Software Engineer at DoorDash, contributing to the development of the ad and promotion platform that supported the company's rapid growth. Prior to that, Jefferson was a VP and Technical Lead at J.P. Morgan from 2007 to 2021, where they built a team and system from the ground up to launch fixed income ETFs. They also have experience as a Senior Technology Specialist at Citigroup Global Capital Markets Inc. from 2005 to 2007, where they developed a global fixed income trading platform. Jefferson is currently pursuing a Master of Science in Mathematics at Nanjing University.
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