John Hann
Principal Software Engineer at Growth Signals
Massachusetts, United States
Summary
🤩
Rockstar🎓
Top SchoolJohn Hann is a Principal Software Engineer with 14 years of hands-on experience designing and scaling resilient, cost-effective cloud and serverless architectures for high-growth products. He built and led engineering orgs from the ground up—most notably as employee #2 and Head of Engineering at Paceline where his team shipped a viral iOS app that scaled to a million MAU and billions of workouts with 99.974% uptime. Equally comfortable in front-end and back-end disciplines, he contributes to open-source tooling (including work on the cujoJS loader) and codes in TypeScript, Haskell, and JavaScript while championing functional and IoC patterns. A mentor and culture-builder, he emphasizes incremental simplicity, knowledge sharing, and lifting teammates to do career-defining work. Based in Massachusetts, he pairs serious technical depth with a curious, adventurous off-duty life—trail running, mountain unicycling, and pursuing tenor singing and alto saxophone skills.
14 years of coding experience
15 years of employment as a software developer
BS Electrical Engineering, BS Electrical Engineering at University of Massachusetts AmherstDiploma College prep, Diploma College prep at Mount Saint Charles Academy
Stackoverflow
766reputation
48kreached
15answers
0questions
requirejs
top-5%
Github Skills (8)
javascript10
front-end-development9
requirejs9
testing8
html6
jquery6
amd6
phantomjs6
Programming languages (6)
Github contributions (5)
cujojs/curl
Jan 2012 - May 2016
curl.js is small, fast, extensible module loader that handles AMD, CommonJS Modules/1.1, CSS, HTML/text, and legacy scripts.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:1 release, 529 commits, 6 PRs in 4 years 4 months
Contributions summary:John contributed to the development and maintenance of the cujojs/curl JavaScript module and resource loader. Their work focused on improving compatibility and functionality, as evidenced by the mock console implementation for IE compatibility. The user addressed specific issues within the project, such as fixing module resolution errors. Additionally, the user worked on the integration with other tools such as a dojo16 shim and test harnesses.
amdhtml-textcommonjs-modulescommonjscss
RaveJS/lode
Feb 2014 - Mar 2015
Contributions:3 commits, 1 push in 1 year
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