Jason Kasper
Embedded Simulator - Senior Virtualization Engineer
Cupertino, California, United States
Summary
👤
Senior🎓
Top SchoolJason Kasper is a senior virtualization and embedded simulator engineer with 24 years of experience building low-level systems, cross-platform graphics, and user-focused interfaces for macOS, Linux, and Windows. Currently on Apple’s Developer Tools team working on the OS Simulator, he brings deep expertise in C/C++ and Objective-C/Cocoa, virtualization rendering, and sandbox-safe cross-process graphics. His tenure at VMware shows a track record modernizing private APIs into robust, store-ready solutions (including Mac App Store packaging and IOSurface-based rendering) and leading Unity/remote VM features across products. Jason combines systems-level troubleshooting with thoughtful UI design and reusable API architecture, mentoring teams to share code across platforms. An active open-source contributor, he has practical experience improving developer tooling—e.g., enhancing git integration in Sublime Text to handle edge cases like filenames with spaces and custom commands. Based in Cupertino, he blends production-grade engineering with an uncommon fluency across OS internals and user-facing developer experiences.
25 years of coding experience
20 years of employment as a software developer
San Diego State University
Github Skills (9)
version-control10
editors10
git10
sublime-text-plugin10
text-editor10
python10
editor10
navigationview9
navigationbar9
Programming languages (5)
Github contributions (5)
kemayo/sublime-text-git
Mar 2013 - Jun 2017
Plugin for some git integration into sublime text
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:13 commits, 1 PR, 5 comments in 4 years 3 months
Contributions summary:Jason primarily contributed to the `diff.py` file, which seems to be involved in displaying and navigating git diffs within Sublime Text. Their work includes implementing the ability to navigate to the source file by double-clicking in the diff view, addressing issues with the `git_root_dir` setting, and handling filenames with spaces. They also fixed merge conflicts and enhanced the functionality for working with custom git commands.
sublime-text
bbidulock/bbkeys
Aug 2001 - Dec 2008
Blackbox tool for setting keyboard shortcuts for manipulating windows
Contributions:156 commits in 7 years 5 months
keyboard-shortcuts
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