Levi Mccallum
Los Angeles, California, United States
Summary
🤩
RockstarLevi Mccallum is a seasoned software engineer and founder with 16 years of experience building consumer and media-facing products from startup prototypes to large-scale apps. He’s led iOS and core experience teams at Pinterest and the NFL, co-founded two startups (Relay and Glean.co), and served as Staff Engineer at Northstar, blending hands-on development with product and technical leadership. A longtime contributor to AsyncDisplayKit, Levi has deep expertise in asynchronous iOS UI architectures and has improved collection view implementations, supplementary views, and data controllers used widely in high-performance mobile apps. Based in Los Angeles, he’s driven by creating experiences that transform perspectives and has repeatedly translated that vision into shipping polished, realtime and multimedia user experiences. Notably, his background spans both executive CTO responsibilities and individual contributor craftsmanship, giving him rare fluency across strategy, systems design, and front-end detail.
16 years of coding experience
13 years of employment as a software developer
Stackoverflow
4,628reputation
244kreached
7answers
22questions
cocoa-touch
top-5%
uikit
top-5%
ios
top-5%
ipad
top-5%
Github Skills (19)
objective-c10
ios10
asyncdisplaykit10
uicollectionview10
ipad9
ux-design9
ui-design9
uikit9
swift9
cocoa-touch9
sequence6
uibarbuttonitem6
popover6
emberjs6
functional-programming6
Programming languages (11)
Github contributions (5)
facebookarchive/AsyncDisplayKit
May 2015 - Sep 2016
Smooth asynchronous user interfaces for iOS apps.
Role in this project:
iOS Mobile Developer
iOS Mobile DeveloperContributions:69 commits, 74 PRs, 410 comments in 1 year 4 months
Contributions summary:Levi primarily contributed to the development and improvement of the `facebookarchive/asyncdisplaykit` repository, a framework for building smooth asynchronous user interfaces for iOS apps. Their work included fixing typos, updating documentation, and refactoring code, particularly in the context of collection view implementations. The user also implemented new features related to supplementary views and data controllers, enhancing the framework's capabilities.
asynchronoususer-interfacesswiftiosasync
levi/twch
Nov 2014 - Nov 2014
Contributions:45 commits in 7 days
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