# Shuyu (Crystal) Li

> Senior Software Engineer at Niantic | ex-Amazon

Location: United States, United States
Profile: https://flows.cv/shuyucrystalli

## Work Experience
### Senior Software Engineer @ Niantic, Inc.
Jan 2021 – Present | San Francisco, California, United States

### Software Development Engineer II @ Amazon
Jan 2017 – Jan 2021 | Vancouver, Canada Area
- Alexa Timers Team: 
Led routing mechanism migration from legacy rule to ML based logic and decoupled timers’ traffic from shared service across multiple domains.
Led timers APL migration on all supported screen devices in multiple regions which helps us directly render the screens from the cloud, giving us better control and flexibility over the GUI change.
Developed Timers API for the skill developers, allow their skills to create and manage timers for their customers.
https://developer.amazon.com/en-US/docs/alexa/smapi/alexa-timers-api-reference.html

- Alexa Email Team: Developed new features for Alexa that enable customers to access their accounts and complete email operations from echo.

### Compiler Optimization Developer @ IBM
Jan 2016 – Jan 2016 | Toronto, Canada Area
Translated the Swift Intermediate Language (SIL) into the intermediate language of the JIT compiler.
Enabled evaluation of dynamic optimization technology, refactored Google Test framework and benchmarks for Swift testing.
Rebuilt the compiler with efficiency equal to Apple’s compiler.  (Swift, C++, C)

### Teaching Assistant @ University of Toronto
Jan 2016 – Jan 2016 | Toronto, Canada Area
I was a teaching assistant of CSC108H (Introduction to Computer Programming) at University of Toronto.

### Undergraduate Researcher @ Dalian University of Technology
Jan 2013 – Jan 2014 | China
Applied mathematical optimization methods and software engineering solutions to improve spectrum resource utilization for wireless communication. An automatic bidding strategy was developed to maximize the owner's benefits while ensuring fairness for all competitors. (MATLAB, R)

### Summer Intern Researcher @ National Taiwan University
Jan 2014 – Jan 2014 | 台湾地区
Project: Automatic Emotion Recognition by Machine Learning with Big Data
Advisor: Prof. Jyh-Shing Roger Jang
Grade: 4.3/4.3
Applied machine learning techniques to let computers automatically analyze the emotions of audio sentences in collaboration with Prof. J.-S. Roger Jang. My project achieved a success rate of 80~90% which was demonstrated by cross validation. (Python, MATLAB)

### Software Engineer Intern @ Doodod Technology
Jan 2012 – Jan 2012 | Beijing
Developed a lottery platform that can be applied to all kinds of purposes with different lottery rules. The platform has already been published into commercial use and has been widely adopted by over 15,000 companies. (HTML, JS, Java)


## Education
### Master of Science in Applied Computing (MScAC) in Computer Science
University of Toronto

### CORe in Financial Accounting, Business Analytics & Economics for Managers
Harvard Business School Online

### Bachelor's degree in Software Engineering (Intensive Japanese)
Dalian University of Technology


## Contact & Social
- LinkedIn: https://linkedin.com/in/shuyu-crystal-li-5b1961a1

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Source: https://flows.cv/shuyucrystalli
JSON Resume: https://flows.cv/shuyucrystalli/resume.json
Last updated: 2026-04-05