Jeremy Schonfeld
Software Engineer at Apple
San Francisco, California, United States
Summary
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RockstarJeremy Schonfeld is a software engineer with 13 years of experience focused on backend, DevOps, and test automation, currently working as a Foundation Engineer at Apple in San Francisco. He brings deep systems-level expertise, having contributed to the Swift language and Swift Foundation projects—fixing Windows build and tooling issues and hardening cross-platform test suites for URLSession, file management, and data handling. Jeremy excels at stabilizing complex build pipelines and making portability improvements that enable large-scale language and library integration. A Georgia Tech alumnus, he combines practical QA rigor with backend engineering skills and a knack for finding subtle platform-specific failures before they reach production.
13 years of coding experience
Github Skills (12)
powershell10
swift10
linux10
cmake10
build-automation10
xctest10
foundation10
test-automation10
cicd9
macos9
windows9
testing8
Programming languages (14)
Github contributions (5)
swiftlang/swift-corelibs-foundation
Aug 2022 - Sep 2022
The Foundation Project, providing core utilities, internationalization, and OS independence
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:94 reviews, 3 commits, 134 PRs in 24 days
Contributions summary:Jeremy primarily focused on improving the test suite for the Foundation library. Their contributions included fixing test failures on Linux, adjusting test availability based on platform, removing and correcting failing tests, and deleting incorrect tests. They addressed failures in various testing areas, including URLSession, file management, and data handling, ensuring the stability and reliability of the codebase across different environments.
tvostranslationinternationalizationfoundationindependence
swiftlang/swift
Sep 2022 - Mar 2025
The Swift Programming Language
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:54 reviews, 76 PRs, 27 pushes in 2 years 6 months
Contributions summary:Jeremy contributed to the Swift programming language repository by addressing build and testing issues primarily related to the Windows platform. Their work involved modifying build scripts, preparing for the integration of swift-foundation, and configuring the toolchain. Additionally, the user made changes to core Swift files to fix build failures and added new modules to the Windows build process. The user also worked on modifying the build process to invoke foundation tests via SwiftPM.
swift-programmingswift-programming-languageprogramming-languageswift
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