Haris Mahmood
Senior Engineering Manager at Square
Old Toronto, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolHaris Mahmood is a Senior Engineering Manager with 11 years of experience building high-performing, cross-functional teams and shipping large-scale web and mobile products. He led foundational work on Shopify’s Shop app—helping scale it from early stages to tens of millions of monthly users—and drove product outcomes like doubled GMV and 300% growth in product clicks. Known for blending hands-on front-end craftsmanship (notably contributions to Shopify’s JS Buy SDK and storefront examples) with strategic leadership, he fosters high-trust teams that deliver quality under pressure. Currently at Square, he focuses on staff, payroll, customer engagement, and messaging platforms while maintaining strong partnerships across product, design, and data science. Colleagues describe him as a detail-oriented operator who accelerates team growth and champions pragmatic engineering practices.
11 years of coding experience
14 years of employment as a software developer
Bachelor of Science (B.Sc.) Honors Computer Science, Bachelor of Science (B.Sc.) Honors Computer Science at York UniversityApplication Development w/ Ruby on Rails, Application Development w/ Ruby on Rails at Hackeryou
Github Skills (13)
html10
css10
javascript10
user-interface10
front-end-development10
react10
shopify10
apollo8
graphql8
wpgraphql8
wordpress-graphql8
jquery8
ember3
Programming languages (6)
Github contributions (5)
Shopify/js-buy-sdk
Mar 2016 - Sep 2017
The JS Buy SDK is a lightweight library that allows you to build ecommerce into any website. It is based on Shopify's API and provides the ability to retrieve products and collections from your shop, add products to a cart, and checkout.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:69 commits, 22 PRs, 56 pushes in 1 year 6 months
Contributions summary:Haris primarily contributed to the front-end implementation of a cart feature for the JS Buy SDK. Their work involved creating cart functionalities, including adding and removing items, updating quantities, and displaying cart information. They refactored the cart to use a more efficient update mechanism. They focused on the UI, integrating an overlay, click-away handlers, and keydown events for improved user interaction.
cartapicollectionsretrieveecommerce
Shopify/storefront-api-examples
Mar 2017 - Apr 2017
Example custom storefront applications built on Shopify's Storefront API
Role in this project:Front-end Developer
Front-end DeveloperContributions:7 commits, 3 PRs, 1 push in 27 days
Contributions summary:Haris primarily contributed to the development of a React-based storefront application. Their work involved setting up a basic React application using `create-react-app`, and creating components like `Product` and `Cart` with accompanying CSS styling. They integrated Shopify's Storefront API, and structured the application's main features. These changes show the user's intent to build out the application's interface and integrate it with backend product information.
apireactcustom-storefrontecommercestorefront-api
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