Experience

1. Quantitative Systematic Trader

   Susquehanna International Group June 2025 – Present
   Excited to start work at SIG!

2. Research Intern

   National Institute of Informatics June 2023 – September 2023
   I completed an internship at the National Institute in Informatics (NII) in Tokyo, Japan. I worked with Prof. Yoshida Yuichi on spectral graph theory projects.

3. Tenor

   University Choir, Conrad Grebel College @Waterloo January 2021 – August 2024
   The University Choir is currently led by Liska Jetchick. I found refuge in the music produced during the rehearsals and in the connections made with fellow musicians. For each concert, our repertoire is diverse but tightly held by a common theme. I also served as manager and (tenor) section leader for a few terms.

4. French Summer School Student

   Université Catholique de Lyon July 2019 – July 2019
   Je me suis inscrit dans un cours français intensif d’été, au niveau B1+, à l’Université Catholique de Lyon. C’était une très belle expérience et j’en ai bien profité!

5. Teaching Assistant

   CUHK Mathematics September 2018 – December 2018
   I helped Dr. Jeff Chak-Fu Wong set up WebWork for the 2018/19 offering of MATH 1010 (Calculus I) at CUHK. WebWork is an open-source online homework system for STEM courses, founded by MAA in 2018. My job was to create and import exercise questions of answer formats with parameter randomization.

6. Research Assistant

   CUHK Mathematics September 2018 – December 2018
   I worked with Prof. Po Lam Yung (now at ANU) to study a problem related to bivariate polynomials, that has connections to the Brascamp-Lieb inequality.

7. Research Intern

   Lawrence Berkeley National Laboratory June 2018 – August 2018
   Under the guidance of Dr. Esmond G. Ng, I investigated solving sparse linear systems with Sherman-Morrison-Woodbury formula. A lot of MATLAB experimentation involved. (Presentation slides)

8. Head Teaching Assistant

   Enrichment Programme for Young Mathematics Talents (EPYMT) July 2017 – August 2019
   EPYMT is a summer course for talented secondary school students to learn university-level mathematics. I was TA in 2017 and 2019, teaching Differential Geometry in 2017 and Number Theory in 2019. As the head TA for the latter course, I was responsible for preparing the quizzes and the exam. (here, here, and here. The bonus questions should be an interesting challenge.)

9. Problem Setter

   La Salle-Pui Ching Programming Challenge August 2016 – August 2018
   La Salle-Pui Ching Programming Challenge is an ACM-ICPC style programming contest for secondary school students, jointly hosted by La Salle College (my alma mater) and Pui Ching Middle School. I was involved in setting problems for the first three editions of the Challenge and also in running the contest.

10. Participant

    Number Theory Seminar, CUHK Mathematics June 2016 – July 2019
    I took part in the number theory seminar organized by Dr. Charles Chun-Che Li. Our group met roughly once a week and read and discussed results in number theory: modular forms, p-adic number theory, and more.

11. Head of Scientific Committee

    Hong Kong Olympiad in Informatics Organizing Committee August 2015 – Present
    We prepare competition and team selection test problems (I have authored 80+ problems so far), conduct training sessions, and other duties to ensure the competition seasons are run smoothly. The pipeline for preparing a problem involves description writing, test case creation, testing of correct and incorrect solutions, and writing editorials.