Benjamin Stiglitz
Cocoa Handyman at Apple
Pittsburgh, Pennsylvania, United States
Summary
👤
Senior🎓
Top SchoolBenjamin Stiglitz is a seasoned Cocoa specialist with 18 years of experience building and managing desktop and mobile application infrastructure, currently leading iWork document and graphics engineering at Apple from Pittsburgh. He blends deep hands-on macOS engineering—contributions to Terminal.app performance, AppKit, and early iPhone SDK work—with management of internal tooling and platform teams. His open-source contributions include core runtime work on the notable MacRuby project, implementing low-level features like KVO accessors and attributed string support. Comfortable across system-level optimization, UI frameworks, and developer tooling, he brings a pragmatic engineer-manager mindset informed by a physics background from Cornell. An early entrepreneur, he also ran a full-stack web and systems practice in the 90s, giving him rare breadth across infrastructure, graphics, and application layers.
18 years of coding experience
B.A., Physics, B.A., Physics at Cornell UniversityHunter College High School
German
Stackoverflow
4,004reputation
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iphone
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uiscrollview
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objective-c
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Github Skills (16)
objective-c10
ruby10
kvc9
key-value9
iphone9
uiscrollview9
key-value-observing9
git6
xcode6
ios6
cocoa-touch6
uigesturerecognizer6
macos6
uikit6
cocoa6
Programming languages (8)
Github contributions (5)
MacRuby/MacRuby
Nov 2008 - Sep 2009
MacRuby is an implementation of Ruby 1.9 directly on top of Mac OS X core technologies such as the Objective-C runtime and garbage collector, the LLVM compiler infrastructure and the Foundation and ICU frameworks.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 commits in 10 months
Contributions summary:Benjamin primarily contributed to the MacRuby project, focused on implementing and refining core features of the Ruby implementation on macOS. Their work involved modifying internal data structures, like flags and runtime components, to manage object properties such as taint and freezing. Further contributions include the implementation of KVO accessors for arrays and sets, enhancing the framework's capabilities, along with initial work on attributed string support.
runtimecompilergarbageon-topicu
benstiglitz/cppstack
Oct 2008 - Nov 2008
Contributions:41 commits in 1 month
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