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Yunxin/David Z. started their work experience in 2018 as a Software Engineer at Yahoo, where they worked from May 2018 to August 2018. They then joined Citadel Securities in 2020 as a Software Engineer, where they rotated at Reference Data and later worked full-time at Rates Market Making. Their responsibilities included working on a quoting system, pricing strategy, market data, and a quant library. The end date of their current role at Citadel Securities is not specified.

Yunxin/David Z. completed a Bachelor of Science degree in Mathematics and Computer Science from the University of Illinois Urbana-Champaign from 2015 to 2019. Subsequently, from 2019 to 2020, they pursued a Master of Engineering degree in Computer Science at Cornell Tech.