Jon White
Principal Security Engineering Manager at Microsoft
Redmond, Washington, United States
Summary
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RockstarJon White is a Principal Security Engineering Manager at Microsoft with over two decades of hands-on experience across low-level Windows internals, managed code, and security detection. He blends deep systems expertise in C#, C++, PowerShell, and assembly architectures (x86/amd64/ia64/ARM) with applied cryptography and language-analysis work for malware detection in O365. A longtime contributor to Windows platform projects—such as meaningful backend improvements to the widely used Windows Implementation Library—he moves fluidly between shipping core libraries, automation, and team leadership. Based in Redmond, he’s known for pragmatic debugging and building auditable security tooling, and for bringing test-driven rigor from early PowerShell and Windows work into modern cloud security engineering.
7 years of coding experience
23 years of employment as a software developer
Github Skills (8)
c-language10
ws-api10
winapi10
resource-management10
cprogramming-language10
wp-api10
rpc9
testing8
Programming languages (9)
Github contributions (5)
microsoft/wil
May 2019 - Sep 2022
Windows Implementation Library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:135 reviews, 35 commits, 93 PRs in 3 years 4 months
Contributions summary:Jon primarily contributed to the Windows Implementation Library (WIL) by modifying and extending existing code. Their work included adding features like RPC context handle wrappers, implementing statically initialized SIDs, and addressing open issues related to resource managers. These changes demonstrate a focus on improving core library functionalities and addressing specific issues within the project. The user also made improvements to variable-length path-based string cleanup and added tests to the repository.
windowswindows-service
jonwis/WindowsAppSDK
Apr 2022 - Sep 2025
Contributions:10 pushes, 2 branches in 3 years 5 months
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