James Paolantonio
Software Engineer at Apple
New York, New York, United States
Summary
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Rockstar🎓
Top SchoolJames Paolantonio is a New York–based software engineer with 11 years of experience building and leading mobile teams for startups and public companies, currently on Apple's engineering team. He’s a hands-on technical leader who has run mobile orgs at Slice and Betterment and served as a Staff iOS engineer at Lyft, focusing on shipping stable, testable Swift and Kotlin applications while improving CI and architecture. Beyond management, he contributes to the Swift compiler—adding compile-time constant extraction for computed properties, tuples, arrays, enums and property wrappers—demonstrating deep interest in language-level performance and tooling. A Penn State IST graduate, he blends product-minded cross-functional collaboration with low-level compiler and platform expertise.
11 years of coding experience
9 years of employment as a software developer
BS, Information Sciences & Technology, Minor Engineering Entrepreneurship, BS, Information Sciences & Technology, Minor Engineering Entrepreneurship at Penn State University
Stackoverflow
2,194reputation
94kreached
66answers
11questions
ios
top-5%
Github Skills (26)
abstract-syntax-tree10
compiler-development10
swift10
ios9
code-optimization9
annotations7
multidimensional-arrays7
multi-dimensional-arrays7
json7
tuple7
enums7
array-object7
annotation7
tuples7
dynamic-arrays7
Programming languages (5)
Github contributions (5)
swiftlang/swift
Nov 2022 - Jan 2023
The Swift Programming Language
Role in this project:
Back-end Developer
Back-end DeveloperContributions:35 reviews, 13 commits, 33 PRs in 2 months
Contributions summary:James's commits primarily focus on enhancing the Swift compiler's compile-time constant extraction capabilities. They've added support for extracting values from computed properties, initialization calls, tuples, arrays, and enums, as well as handling property wrappers and static function calls. The contributions include changes to the ConstExtract and ConstTypeInfo components, indicating a focus on improving the compiler's ability to optimize code by identifying and utilizing compile-time constants. Moreover, the user also implemented features for extracting source locations and annotations.
swift-programmingswift-programming-languageprogramming-languageswift
jPaolantonio/NewsApp
Nov 2016 - Jul 2019
An example suite of applications showing shared Swift and Kotlin architectures
Contributions:12 commits, 10 PRs, 49 pushes in 2 years 8 months
architectureskotlinswiftiossuite
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