Christian Yongwhan Lim

Hi, I'm Christian Yongwhan Lim!

Vice President (VP) of Platform, Arklex AI

Columbia University

Adjunct Associate Professor of Computer Science, Columbia University
Coach, Columbia ICPC Team

International Collegiate Programming Contest (ICPC)

Director, ICPC Internships, ICPC Foundation
Chair, ICPC Competitive Learning Institute (CLI) Symposium, 2025 ICPC World Finals at Baku
Editor, Journal of Competitive Learning (JCL)
Co-Chair, ICPC Curriculum Committee
Chief Judge, ICPC North America Mid-Central Regional

Selected Professional Experiences

Senior Quantitative Software Engineer, Two Sigma Investments (7/2022 ~ 2/2023)
Research Software Engineer, Google Research (10/2016 ~ 6/2022)

Selected Teaching Experiences

Adjunct Associate Professor of Computer Science, Columbia University (Spring 2025 ~ Present)
- Competitive Programming
Associate in Computer Science, Columbia University (Spring 2022 ~ Fall 2024)
- Advanced Topics in Competitive Programming (w/ Josh Alman)
- Competitive Programming
- Technical Interview Preparation in C++
Lecturer, Massachusetts Institute of Technology (6/2022 ~ 5/2023)

Selected Awards

Outstanding Mentorship Award - Quatrefoil Medal, ICPC Challenge powered by Huawei (10/2024)
2024 ICPC North America Championship, Silver Medal (3rd Place) Team Coach (5/2024)
Excellence in Leadership Award, ICPC North America (5/2023)

Education

Massachusetts Institute of Technology, PhD, entered in '13, but on leave (Fall 2013 ~ Fall 2016)
- Advisor: Asuman Ozdaglar
Stanford University, BS '11 in Math + CS [double major]; MS '13 in CS (Fall 2007 ~ Fall 2013)
- Advisors: Fei-Fei Li (CS) & Persi Diaconis (Math)

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