Colin Mackenzie
Software Engineer at Expo
Lawrence, Kansas, United States
Summary
👤
Senior🎓
Top SchoolColin Mackenzie is a Staff Software Engineer with 12 years of experience building scalable full‑stack JavaScript applications, currently contributing to Expo after leading frontend efforts at SeatGeek and Arcadia. He excels at modernizing codebases—spearheading migrations to TypeScript and Next.js, upgrading core dependencies, and introducing CI/CD practices that measurably improved team velocity and reduced costs. A pragmatic technical leader and mentor, he has founded frontend infrastructure teams, guided multiple engineers, and delivered product features like live queue monitors and acquisition funnels that drove real business impact. Comfortable across React, TypeScript, Node, and build systems, he pairs deep implementation skills with a talent for developer ergonomics and long-term maintainability. Based in Lawrence, Kansas, he’s equally at home optimizing performance for scale and turning messy legacy stacks into predictable, ship‑ready platforms.
12 years of coding experience
11 years of employment as a software developer
B.A. Economics, B.A. Economics at University of Southern California
Stackoverflow
1,373reputation
625kreached
17answers
3questions
Github Skills (24)
react8
updating7
windows-subsystem-for-linux6
frontend6
ruby-on-rails6
rotation6
amazon-ec26
android6
typescript6
amazon-web-services6
grep6
ruby6
jasmine5
console5
caching4
Programming languages (2)
Github contributions (5)
mackenco/BellyGuides
Oct 2013 - Jan 2014
Contributions:186 commits in 3 months
mackenco/ballparks
Aug 2017 - Aug 2022
Tracking Visits to Every Ballpark
Contributions:12 pushes, 2 branches in 5 years 1 month
visitstracking
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