Jeffrey Deng
Staff Software Developer at Shopify
Vancouver, British Columbia, Canada
Summary
👤
Senior🎓
Top SchoolJeffrey Deng is a Staff Software Developer based in Vancouver with 11 years of experience building mobile-first products and SDKs, currently leading work at Shopify. He rose through multiple engineering roles at Shopify after early-career mobile and API work at Plastic Mobile, where he shipped award-winning iOS apps, integrated BLE/iBeacon, and improved performance and localization pipelines. Jeffrey combines hands-on implementation (Core Graphics, UIKit, Unity) with backend experience (Django, Google App Engine) and a knack for simplifying complex flows—evidenced by an early internship project that turned a convoluted login flow into a clear state machine and a company-wide hackathon win. Comfortable across native mobile, SDKs, and web APIs, he focuses on pragmatic, measurable improvements such as latency reduction and region-detection accuracy. He maintains a public presence at jeffreydeng.com and brings a blend of product sensitivity and engineering rigor to platform-scale challenges.
11 years of coding experience
7 years of employment as a software developer
Honours Bachelor of Science (Hon. B.Sc.), Computer Science, Undergraduate, Honours Bachelor of Science (Hon. B.Sc.), Computer Science, Undergraduate at University of Toronto - Victoria UniversityAlumni, Alumni at Pierre Elliott Trudeau High School
objective c, swift, java, python, c#, html, javascript, css
Github Skills (55)
face10
shopify10
codegen10
font-face10
sdk10
ffi10
loader10
opentype9
fonts9
font-size9
google-fonts9
truetype9
variable-fonts9
woff9
apple-pay8
Programming languages (7)
Github contributions (5)
dengjeffrey/KeyKit
Aug 2016 - Apr 2017
Contributions:4 pushes, 1 branch in 8 months
extensionskeyboardiossimple-keyboard
dengjeffrey/webfontloader
May 2018 - Oct 2018
Web Font Loader gives you added control when using linked fonts via @font-face.
Contributions:6 pushes, 3 branches in 6 months
font-sizefontfontswoffwoff2
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