John Sylvain
Member Of Technical Staff at Runway
Chicago, Illinois, United States
Summary
👤
Senior🎓
Top SchoolJohn Sylvain is a Lead Software Engineer with 11 years of experience building high-performance JavaScript web applications and developer tooling, currently leading frontend infrastructure at Outfit Labs and running his own consultancy, Private Domain LLC. He specializes in modern application architecture and has repeatedly delivered React, TypeScript, GraphQL, and static-site solutions that improved performance and deployment velocity—examples include a 4x site speedup and an 80% reduction in payment integration time. John has deep experience creating reusable frontend infrastructure (component libraries, CLIs, Terraform/Jenkins pipelines) and has led migration efforts from legacy AngularJS to modern stacks. A pragmatic technical leader, he combines hands-on engineering with product-focused systems like recommendation engines and automated SEO tooling, and maintains a public portfolio that reflects a developer-first approach to building scalable web experiences.
11 years of coding experience
9 years of employment as a software developer
B.S. Computer Graphics Technology Web Development, B.S. Computer Graphics Technology Web Development at Purdue University
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (61)
node-cli10
wunderlist10
artwork9
to-do9
spotify8
dns8
virtual-dom8
javascript8
github-pages7
jwt7
starlark7
music7
jsx7
vanilla-javascript6
serverless-functions6
Programming languages (5)
Github contributions (5)
johnsylvain/pagine
Oct 2017 - Jan 2018
Contributions:76 commits, 21 PRs, 57 pushes in 3 months
website-generatormarkdownclient-side
johnsylvain/blog
Dec 2018 - Sep 2021
✍️Personal blog by John Sylvain
Contributions:54 commits, 29 PRs, 34 pushes in 2 years 9 months
gatsbyreactgraphqljohn
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