# Ṃack Duan

> Software Engineer

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

## Work Experience
### Software Engineer @ Mixpanel
Jan 2016 – Present | San Francisco, CA

### Software Engineer - Web @ Robinhood
Jan 2015 – Jan 2016 | Palo Alto
- Built Chinese version of Robinhood website
- Built signup flow for referral program
- Added logging infrastructure and ran several successful A/B experiments using it
- Added infrastructure for Webpack and React.js
- Skills: HTML5, CSS3, JavaScript, Django, Webpack, React.js

### Software Engineer @ Twitter
Jan 2014 – Jan 2015 | San Francisco, CA
- Built the redesign of Twitter search UI
- Built component for showing user recommendations in the home timeline
- Built component for showing related tweets on permalink pages
- Built custom search experience for NFL Superbowl
- Skills: Scala, HTML5, CSS3, JavaScript, Flight.js, mustache

### Software Engineer Intern — Windows Performance @ Microsoft
Jan 2013 – Jan 2013 | Redmond, WA
- Analyzed video memory allocations in Windows to enhance performance
- Built new tools to visualize video memory usage from both application/OS-centric perspectives
- Skills: C, C++, C#

### Software Engineeer Intern — Mozilla Labs @ Mozilla Corporation
Jan 2013 – Jan 2013 | Mountain View, CA
- Worked in Mozilla Labs team on PDF.js, PDF viewer in Firefox written in JavaScript
- Proposed and implemented performance enhancements, improving loading time by an order of magnitude
- Added support for PDF annotations
- Skills: HTML, CSS, JavaScript

### Web Developer Intern @ ContextLogic
Jan 2012 – Jan 2012 | San Francisco, CA
- Implemented user-facing features of Wish
- Set up and managed build system
- Got exposure to and worked on entire web-stack, gaining experience with many technologies used at startups
- Skills: Sass, Require.js, BackBone.js, jQuery, Python, MongoDB, mongoengine, Redis

### Software Engineer Intern — Location Tagging @ Facebook
Jan 2011 – Jan 2011 | Palo Alto, CA
- Proposed and implemented changes to gather location data from photos leading to a 5X increase in location data, and causing controversy on Reddit and Hacker News
- Built infrastructure to process and analyze gathered location data
- Built features to expose new location data to users
- Skills: HTML, CSS, JavaScript, PHP, MySQL, Hive

### Research Assistant @ University of Waterloo
Jan 2011 – Jan 2011 | Waterloo, ON
- Built search engine interface on top of Google and Bing to be used in research experiments
- Skills: HTML, CSS, JavaScript, Python

### Software Engineer Intern — Realtime Infrastructure @ Facebook
Jan 2011 – Jan 2011 | Palo Alto, CA
- Built system to support load balancing on Facebook's chat servers, significantly reducing number of needed servers
- Ran simulations to stress-test load balancing system
- Skills: PHP, Erlang

### Mobile Developer Intern @ Xtreme Labs Inc.
Jan 2010 – Jan 2010 | Toronto, ON
- Developed and maintained several BlackBerry applications for various clients
- Maintained websites for various clients
- Skills: Java, Ruby on Rails


## Education
### Bachelor of Software Engineering in Software Engineering
University of Waterloo


## Contact & Social
- LinkedIn: https://linkedin.com/in/mduan

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Source: https://flows.cv/ack
JSON Resume: https://flows.cv/ack/resume.json
Last updated: 2026-04-11