Justin Krol
Senior Software Engineer at Mangrove Systems
Kitchener, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolJustin Krol is a Senior Software Engineer with 11 years of experience designing reliable, high-performance systems across startups and large product teams. He progressed through multiple roles at Shopify—from intern to senior developer—before moving into senior engineering positions at RefQuest+, The Bricks Inc, and currently Mangrove Systems, demonstrating strong incremental ownership and production experience. Based in Kitchener, Ontario, he combines a top-of-class software engineering degree from Carleton University with practical expertise in shipping resilient services under real-world constraints. Known for enjoying complex system challenges, he brings a pragmatic, performance-first mindset and a track record of accelerating from internship to senior roles early in his career.
10 years of coding experience
7 years of employment as a software developer
Bachelor’s Degree, Software Engineering (B.Eng), 11.8/12, Bachelor’s Degree, Software Engineering (B.Eng), 11.8/12 at Carleton University
French, English, Korean
Github Skills (21)
shopify-api10
polaris10
hotel-booking10
shopify9
admin9
rails9
rest9
spree9
graphql8
firebase5
abstraction5
cli4
decode4
angular3
calculator3
Programming languages (3)
Github contributions (5)
justinkrol/Conecto
Jun 2015 - Feb 2021
Contributions:8 PRs, 16 pushes, 11 branches in 5 years 9 months
canvasjavascriptpuzzlehtml5html5-canvas
JFleming4/FourthYearProjectSite
Mar 2018 - Apr 2018
Contributions:26 PRs, 55 pushes, 26 branches in 1 month
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