Willem Rosenthal
Senior Frontend Software Engineer at Veterinary Emergency Group
New York City Metropolitan Area United States
Summary
👤
Senior🎓
Top SchoolWillem Rosenthal is a Senior Frontend Software Engineer with 11 years of experience building performant, user-focused applications across web and games. He specializes in React, TypeScript, Redux/Context patterns, Node/Express, and developer tooling, and has a track record of shipping high-quality products to millions of users across iOS, Android, Web, Steam and Nintendo Switch. Willem pairs frontend craftsmanship with backend problem-solving—rewriting an order allocation algorithm to cut runtime by 15x and redesigning processing pipelines to achieve 4x speedups. As a founder and game engineer he built custom physics, AI state machines and tooling, and monetized games that generated $2M revenue and tens of thousands of 5-star reviews. He contributes to open source (notably a SolidJS Chrome devtool and NPM library) and thrives on translating complex systems into reliable, maintainable developer and user experiences.
11 years of coding experience
13 years of employment as a software developer
Bachelor of Fine Arts (BFA), Bachelor of Fine Arts (BFA) at Maryland Institute College of Art
Stackoverflow
1reputation
0reached
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Github Skills (23)
visualizer10
chrome-extension10
lime8
solidjs7
neko7
time-travel7
emulation6
game-development5
frontend5
haxe5
sega5
haxeflixel4
objective-c4
libretro4
cross-platform4
Programming languages (4)
Github contributions (5)
CSSpider/dev-chat-app
Nov 2022 - Dec 2022
Contributions:4 reviews, 32 commits, 10 PRs in 3 days
oslabs-beta/solid-rewind
Dec 2022 - Feb 2023
Time Travel Debugger for SolidJS
Contributions:1 review, 91 commits, 16 PRs in 1 month
travelsolidjsdebuggertime-travelchrome-extension
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