Jason Miller
Principal Engineer at Shopify
Hamilton, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolJason Miller is a Principal Engineer with 16 years of experience, currently driving technical strategy across Shopify’s Admin and App Platform. He is the creator of Preact and a prolific JavaScript maintainer whose lightweight libraries power countless web experiences—he’s ranked #4 worldwide by project popularity. Jason blends deep front-end expertise in performance analysis, frameworks and tooling with hands-on improvements to major projects like Next.js, Chrome Labs tools and numerous tiny, high-impact libraries (microbundle, unistore, greenlet). Known for pragmatic, size- and speed-first engineering, he also brings systems thinking from prior developer-relations work at Google that focused on quantifying runtime performance for the open web. Based in Hamilton, Ontario, he pairs open-source leadership with production-grade architecture and build tooling fluency.
16 years of coding experience
13 years of employment as a software developer
-- Computer Engineering, -- Computer Engineering at University of Waterloo
English
Stackoverflow
2,314reputation
41kreached
43answers
0questions
javascript
top-5%
Github Skills (102)
parserator10
url-routing10
parser10
ui-components10
testing10
pwapp10
eventsource10
clipboard10
web-development10
lessc10
jsx10
fetch-api10
markdown10
javascript10
event-handling10
Programming languages (20)
Github contributions (5)
GoogleChromeLabs/size-plugin
Aug 2018 - Aug 2021
Track compressed Webpack asset sizes over time.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:12 releases, 1 review, 47 commits in 3 years
Contributions summary:Jason primarily contributed to the `size-plugin` repository, focusing on enhancements and bug fixes related to the core functionality of tracking Webpack asset sizes. They addressed issues around promise handling, implemented features for chunkhash support, and improved the output display. The user also refactored code for better compatibility with different Webpack versions and introduced options for compression and output customization.
webpackwebpack-pluginperformance-budgetbundlesizewebpack-assets
developit/microbundle
Dec 2017 - Aug 2022
📦 Zero-configuration bundler for tiny modules.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:21 releases, 76 reviews, 310 commits in 4 years 9 months
Contributions summary:Jason contributed to the development of a zero-configuration bundler. They implemented a new plugin for preserving the shebang of node CLI's, which involved modifying the build process. The user also fixed typos, formatted build stats, and resolved output filename mapping issues. They made changes to both the command-line interface and the core bundling logic.
bundlerzero-configurationbundlemodule-bundlermicrolib
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.