About Me

I'm a Software Engineer at Millennium. I enjoy learning quantitative finance in my spare time and dabbling in the market. Off the computer, I collect playing cards for cardistry, speedcube (2x2, 3x3, 3x3 One Handed, 3x3 Blind), and play table tennis. I enjoy competing in tournaments for table tennis and cubing. Find out more about me below!


Web Development

Data Analytics

Machine Learning


  • Jan 2024 - Present


    Learning and churning

  • Mar 2021 - Dec 2023


    As a Full-Stack Software Engineer at a startup, I wear many hats - developing React components - building data pipelines - measuring DORA metrics to improve CI/CD - leading production releases - setting up pods in K8. The work is exciting and fast paced!

  • Sep 2019 - Dec 2020

    University of Chicago

    I received a Masters degree in Computer Science with a specialization in Data Analytics. Some classes I particularly enjoyed were: Machine Learning, NLP, Computer Architecture, and Time Series Analysis and Stochastic Processes. During this time, I was an RA for the Director of Data Analytics at Harris Public Policy, building tools for Public Policy students.

  • Oct 2018 - Aug 2019


    I worked on various projects at the Nokia branch in Austin. I started off by making an AR prototype in Amazon Sumerian to control IoT smart devices. Next, I tackled some frontend tasks on a Django webapp. I ended my internship by completing a service monitoring script that would monitor Kubernetes namespaces.

  • Aug 2015 - May 2019

    University of Texas, Austin

    I got my Bachelors of Science in Mathematics and a minored in Computer Science and Business. At UT Austin, I competed alot in rubik's cubing and table tennis. Click here for my WCA profile.

  • Jan 2012 - May 2015

    Utah State University, Logan

    During this time period, I performed research in Analytical/Computational Chemistry under my mentor, Dr. Tapas Kar at Utah State University. Throughout my project, I published multiple research papers, won multiple research competitions: Intel STS National Semifinalist (2015), Siemens Research Competition Regional Finalist (2014), Sigma Xi SRS National Chemistry Champion (2014). I was also inducted into the Sigma Xi Research Society.


  • All
  • Software Development
  • Machine Learning
  • Finance
  • Other


Chemical Physics Letters
Chemical Physics Letters

Published January 2014 | Chemical Physics Letters

Read Paper

An accurate pair potential function for diatomic systems

Colin Tapas Ruihua
Chemical Physics Letters
Journal of Nanoscience and Nanotechnology

Published May 2014 | Journal of Nanoscience and Nanotechnology

Read Paper

Pauli–Rydberg–London Potential: An Accurate Pair Potential Function for Diatomic Systems

Colin Tapas Ruihua

Contact Me

Feel free to email me at: colinjianingxie@gmail.com or colinjianingxie@uchicago.edu