Andrew Watt
Software Engineer at Square
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolAndrew Watt is a seasoned software engineer with 14 years of experience building consumer-facing and enterprise systems from UI frameworks to high-throughput transaction platforms. Currently on Square’s UI Systems team, he focuses on declarative UI and design systems, bringing a designer’s attention to pixels and brevity to engineering problems. His background spans iOS apps and video tools at Hudl and white‑labeled mobile products, to large-scale middle‑office systems at TD Ameritrade, evidencing full‑stack fluency across Swift, Java, C#, and backend services. He’s led small teams and products end‑to‑end, often owning architecture, delivery, and customer-facing details. Based in San Francisco, he pairs a pragmatic engineering mindset with a strong aesthetic sense—aiming to build software others enjoy using.
14 years of coding experience
15 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at University of Nebraska-Lincoln
English, Japanese
Stackoverflow
2,757reputation
243kreached
15answers
4questions
jdbc
top-5%
sqlite
top-1%
Github Skills (88)
collectionview10
state-machine10
declarative10
uikit10
collectionviewlayout10
reactive10
swift10
dependency-manager10
sqlite10
android-app10
square10
objective-c10
ios10
declarative-ui10
cocoapods10
Programming languages (7)
Github contributions (5)
square/swift-modals
Mar 2025 - Feb 2026
A framework for presenting modal content deterministically in an iOS application.
Contributions:2 releases, 3 reviews, 7 PRs in 11 months
ios-application
watt/ruby_patience_diff
Jun 2012 - Feb 2021
A Ruby implementation of the Patience diff algorithm
Contributions:1 review, 18 commits, 5 PRs in 8 years 9 months
ruby
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