Jia-Han Chiam

Jia-Han Chiam (also rendered Chiam Jia-Han) is a Singaporean computer scientist and quantitative researcher. He represented Singapore in the International Olympiad in Informatics (2007-2009; bronze, bronze, silver) and the International Mathematical Olympiad (2007-2009), and won national informatics olympiad honours while at Raffles Institution. He studied at Stanford University, earning a Bachelor's degree in Computer Science and Mathematics and a Master's degree in Computer Science (2012-2016), and did machine-learning and networking research projects there. His professional career has been in quantitative finance: software-development and quant-research internships at Tower Research Capital (2013), The D. E. Shaw Group (2014) and Citadel LLC (2015), then eight years as a Quantitative Researcher at Citadel Securities (2016-2024) on the futures high-frequency trading team, and since 2025 a Quantitative Researcher at Two Sigma in Chicago. He is a FINRA-registered representative (CRD# 6372182).

Notes9

• Quant employment verification: CONFIRMED. Actual employed roles (not student programs) are documented across multiple quant-finance employers, and the identity is corroborated. Employer classification: Two Sigma (quantitative hedge fund/asset manager; Two Sigma Securities LLC is a broker-dealer/market maker), Citadel Securities (market maker), Citadel LLC (multi-strategy hedge fund), The D. E. Shaw Group (quantitative hedge fund), Tower Research Capital (high-frequency trading firm). Evidence: LinkedIn index enrichment lists Quantitative Researcher at Two Sigma (2025-), Quantitative Researcher at Citadel Securities (2016-2024), Quantitative Research Intern at Citadel LLC (2015), Quantitative Analyst Intern at The D. E. Shaw Group (2014), Software Development Intern at Tower Research Capital (2013); the FINRA registry-derived advisor profile for 'Jia-han Chiam' (aka Han Chiam), CRD# 6372182, independently places him at TWO SIGMA SECURITIES, LLC, Chicago. Identity supported by the same person matching the Singapore IOI/IMO olympiad record and Stanford CS education. The two most recent roles (Two Sigma, Citadel Securities) are index/registry-only; the 2013-2015 internships rest on the index alone and are NOT independently confirmed by a primary source.2026
• Independent FINRA-registry-derived advisor record lists Jia-han Chiam (aka Han Chiam), CRD# 6372182, as a Registered Representative at TWO SIGMA SECURITIES, LLC, Chicago, IL 60601, with a Series 57T exam; it states he began his finance career in 2026. This corroborates the Two Sigma employment and the identity, and the Series 57 (TO) license is the securities-trader registration typically held by a trading/market-making seat. Registry aggregator, not a primary source.2026
• Current role per LinkedIn index data: Quantitative Researcher at Two Sigma, Chicago, IL, starting 2025; headline reads 'Former Quantitative Researcher at Citadel Securities'. Index claim only, not independently confirmed by a primary source.2025
• Citadel Securities role (2016-2024, 8 years): LinkedIn index role description states he 'Worked on the futures high frequency trading team at Citadel Securities, developing algorithmic trading strategies and researching quantitative models to predict price movements.' Index claim only.2024
• D. E. Shaw internship (2014, Quantitative Analyst Intern): index description states he 'Worked in the equities group of a leading quant hedge fund, researching methods for performing statistical inference on sparse data to build forecast models.' Index claim only.2014
• Tower Research Capital internship (2013, Software Development Intern): index description states he 'Worked on the research platform for a leading high-frequency trading firm. Developed tools and APIs for traders...'. Index claim only.2013
• Stanford education: Bachelor's Degree in Computer Science and Mathematics (2012-2016) and Master's Degree in Computer Science (2015-2016), both at Stanford University. Index claim only.2016
• Authored a Stanford CS231n (Convolutional Neural Networks for Visual Recognition) final report, 'Brand logo classification' (2015), comparing CNNs against SIFT/BoW models for finding brand logos in social-media photos, reporting up to 86.98% CNN classification accuracy. His Stanford contact email [contact omitted] appears on the report. Primary source.2015
• Co-authored a Stanford CS229 (Machine Learning) autumn 2012 final project, 'Determining Behavior of Bid-Ask Prices Following Liquidity Shocks' (with Chuanqi Shen) - an early quantitative-markets research project predating his quant internships. Primary source.2012
• Olympiad record (Singapore, school Raffles Institution): IOI 2009 Silver medal (rank 35), IOI 2008 Bronze medal (rank 88), IOI 2007 Bronze medal (rank 126), per the competitive-programming hall-of-fame profile; the IOI statistics page lists three IOI participations. Primary-source competition record.2009
• IMO record: represented Singapore at the 2009 International Mathematical Olympiad, awarded a Silver medal with 25 points (rank 117). The olympiad identity spans IMO 2007-2009. Primary-source competition record.2009
• Also served as a Teaching Assistant for CS 161 (Design and Analysis of Algorithms) at Stanford University in 2016, grading homework/exams and helping set weekly problem sets. Index claim only.2016