Hi, I'm Christian Yongwhan Lim!
Co-Founder at Stealth Mode Startup (full-time)
Associate in Computer Science (Adjunct) at Columbia University (part-time)
Technical Mentor at Interview Kickstart (part-time)
Internship Manager at International Collegiate Programming Contest (ICPC) Foundation (volunteer)
Selected Professional Experiences
Co-Founder at Stealth Mode Startup @ 10/2024 -
Technical Mentor at Interview Kickstart (part-time) @ 7/2023 -
Owner of Christian and Grace Consulting LLC @ 4/2023 - 7/2024
Senior Quantitative Software Engineer at Two Sigma Investments @ 7/2022 - 2/2023
Research Software Engineer at Google Research @ 10/2016 - 6/2022
Selected Teaching Experiences
Adjunct Associate Professor of Computer Science at Columbia University @ 2025 Spring -
Competitive Programming [NEW! Syllabus]
Associate in Computer Science at Columbia University @ 2022 Spring - 2024 Fall
Advanced Topics in Competitive Programming (w/ Josh Alman) [Syllabus]
Competitive Programming [Syllabus]
Lecturer at Massachusetts Institute of Technology @ 6/2022 - 5/2023
Selected Awards
[10/2024] Outstanding Mentorship Award - Quatrefoil Medal (Issued by Huawei, ICPC Challenge powered by Huawei)
[5/2024] Coach: 2024 ICPC North America Championship Silver Medalist Team (3rd Place) (Issued by ICPC North America)
[5/2023] Excellence in Leadership Award (Issued by ICPC North America)
Education
Massachusetts Institute of Technology (PhD entered in '13, but on leave-of-absence) @ 9/2013 - 1/2016
Advisor: Asuman Ozdaglar
Stanford University (BS '11 in Math + CS [double major]; MS '13 in CS) @ 9/2007 - 1/2013
Advisors: Fei-Fei Li (CS); Persi Diaconis (Math);