Juriy Zaytsev
Founder at PRzilla
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolJuriy Zaytsev is a veteran web engineer and founder with 16+ years of hands-on experience building high-performance front-end systems and end-to-end web products. He has driven architecture and tooling at scale across LinkedIn, Facebook, WeWork and startups, and now builds PRzilla — an AI-powered CrossFit coaching app — as a solo founder leveraging AI-assisted development. A prolific open-source contributor, Juriy has improved widely used projects like Prototype.js, Babel minifier and the ECMAScript compat-table, blending performance optimizations with rigorous testing. He’s equally comfortable shipping native mobile apps, complex React codebases, or developer tooling and linting infrastructure that serve thousands of developers. Based in New York, he pairs deep JavaScript expertise with a practical obsession for fitness-tech convergence, designing features that reflect real athlete workflows and long-term coaching memory. Colleagues know him as a pragmatic problem-solver who turns nuanced developer-experience and product insights into reliable, production-grade systems.
16 years of coding experience
19 years of employment as a software developer
Lomonosov Moscow State University
English, Russian, Spanish, Ukrainian
Github Skills (29)
babel610
min10
code-optimization10
compatible10
javascript10
testing10
css10
browser-support10
minify10
minification10
dom-manipulation10
jestjs10
performance-optimization10
babel-core10
html10
Programming languages (8)
Github contributions (5)
kangax/html-minifier
Feb 2010 - Oct 2021
Javascript-based HTML compressor/minifier (with Node.js support)
Role in this project:
Front-end Developer
Front-end DeveloperContributions:1 release, 389 commits, 70 PRs in 11 years 10 months
Contributions summary:Juriy primarily contributed to the UI and functionality of the HTML minifier. Their commits showcase improvements in the application's user interface by adding features such as the ability to remove empty elements, to remove type attributes from script elements, and to add the option to remove comments and CDATA sections. The user also made improvements by including new tests and refactoring some of the functions of the minifier itself.
minifynode-jsjavascriptcompressorcompress
compat-table/compat-table
Apr 2010 - Mar 2016
ECMAScript compatibility tables
Role in this project:Front-end Developer
Front-end DeveloperContributions:537 commits, 99 PRs, 120 pushes in 6 years
Contributions summary:Juriy's contributions primarily focused on developing and maintaining ECMAScript compatibility tables. Their work included updating the existing compatibility tables by adding new entries for features like WebKit support, along with implementing improvements to the UI with the addition of features such as showing the number of implemented features. The user also performed code cleanup by fixing layout issues.
jsjavascriptcompatibilityecmascript
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