# Yon-Seo Kim

> Software Engineer at Google

Location: San Francisco, California, United States
Profile: https://flows.cv/yonseo

Experienced Senior Software Engineer with a demonstrated history of working in the computer software industry. Strong engineering professional skilled in Scala, Java, LaTeX, Mathematics, and productizing Statistical / Machine-Learning product.

## Work Experience
### Staff Software Engineer @ Google
Jan 2021 – Present | Mountain View, California, United States

### Sr. Machine Learning Engineer @ Goldbird @ Twitter
Jan 2019 – Jan 2021

### Sr. Software Engineer @ Twitter
Jan 2017 – Jan 2021 | San Francisco Bay Area

### Sr Software Development Engineer @ Workday
Jan 2015 – Jan 2017 | San Francisco Bay Area
Worked on Machine-Learning Platform team
· Built Machine-Learning Platform in Scala based on Apache Spark; a robust platform which allows data scientists and engineers develop ML-applications on their local laptop and runs on Spark cluster without any modification.
· Implemented ARIMA algorithm for Time-series forecasting. Open-sourced at https://github.com/Workday/timeseries-forecast
· Designed, built, and deployed micro-services that functions as base platform for serving predictive analytics and Machine-Learning insights to Workday-internal and external customers.
· Led and presented at Machine-Learning club to promote and spread ML-theory and techniques.
· Been PO of 3 projects and managed from design phase to deployment and production support.
· Mentored junior engineers and represented team to other teams within Workday.

### Senior Software Engineer @ The Factory (San Francisco)
Jan 2014 – Jan 2014 | San Francisco

### Software Development Engineer @ Amazon
Jan 2012 – Jan 2014 | San Francisco, CA
Worked at Amazon Game Studio and Amazon AppStream.
· Built game metrics visualization tool.
· Built re-engagement service for scheduling and executing campaigns to user segments of interest.
· Built dynamic bandwidth estimation algorithm for cloud streaming service.
· Implemented error correction algorithm, YUV444 support, custom messaging channel etc.
· Operated Jenkins build system for building and shipping AppStream SDK.

### Quantitative Analyst @ Millennium Partners
Jan 2011 – Jan 2012
Time series analysis. Trading strategy. Tick data processing.

### Quantitative Analyst @ Roc Capital Management, LP
Jan 2009 – Jan 2011 | New York, NY
Worked on optimization algorithms, multi-factor risk model, time-series analysis, and building mathematical/statistical library. Developed and maintained software solutions.

· Developed server-client software solution in Java under Eclipse IDE. Maintained the server under JBoss environment. Server-side is multi-threaded with automatic self-checkup and maintenance. Client-side is a GUI-interface written in the Java Swing library.

· Built optimization software for finding trading solutions that maximizes P&L under various constraints. Solver codes are multi-threaded for faster response to meet trader requirements.

· Implemented the Expectation-Maximization algorithm for PCA and used it in the multi-factor risk model which gives more robust solution and has application for filling in missing values.

### Jr. Faculty at the University of Chicago @ University of Chicago
Jan 2006 – Jan 2009 | Hyde Park, Chicago
L. E. Dickson Instructor.
Mathematical Physics / Algebraic Geometry

- worked on the Symplectic Topology: interaction between SFT and the Gromov-Witten theory.
- taught mathematics classes to students from various backgrounds


## Education
### PhD in Mathematics
UCLA


## Contact & Social
- LinkedIn: https://linkedin.com/in/yon-seo-kim-1886419

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Source: https://flows.cv/yonseo
JSON Resume: https://flows.cv/yonseo/resume.json
Last updated: 2026-04-12