Jeff Handley
Principal Engineering Manager at Microsoft
Redmond, Washington, United States
Summary
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RockstarJeff Handley is a Principal Engineering Manager based in Redmond with over two decades of experience building developer-focused frameworks, libraries, and large-scale web platforms. He blends hands-on engineering (notably contributions to high-profile .NET projects like Windows Forms, dotnet/runtime, and NuGet) with strategic leadership—shaping performance monitoring, API obsoletion diagnostics, and cross-team ownership models in the .NET Libraries group. A compassionate, remote-friendly manager, he has recruited and grown diverse, geo-distributed teams and introduced practical processes like triage rotations and “Area Pods” to boost productivity. His background spans full-stack and DevOps work across cloud-native services and package tooling, and he has a track record of turning internal developer tooling into production-quality services that handle millions of daily requests. Not obvious from his title: he pairs technical authorship and documentation improvements with deep build-and-release expertise, making him equally comfortable shipping code, scripts, and the guidelines that help others use them well.
14 years of coding experience
24 years of employment as a software developer
Github Skills (26)
nuget10
net10
css10
dotnet-new10
dotnet10
asp-net-mvc10
netframework10
windows-forms10
asp-net10
build-automation10
dotnet-core10
html10
powershell10
web-development10
csharp10
Programming languages (17)
Github contributions (5)
NuGet/NuGetDocs
Oct 2011 - Feb 2015
Former Documentation site for NuGet - now replaced by NuGet/docs.microsoft.com-nuget
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:1 release, 336 commits, 10 PRs in 3 years 4 months
Contributions summary:Jeff contributed to the documentation site for NuGet, making changes to both the frontend and backend components. The primary focus was on improving the user interface with new styles and features like a GitHub source link. The user also made code formatting improvements and corrected errors in the documentation itself. Additionally, they added functionality to the underlying codebase.
nuget
dotnet/runtime
Oct 2015 - Dec 2022
.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
Role in this project:Back-end Developer, Technical Writer
Back-end Developer, Technical WriterContributions:855 reviews, 76 commits, 423 PRs in 7 years 3 months
Contributions summary:Jeff primarily focused on fixing documentation links and updating documentation across various file types like TXT, MD, and HTML within the .NET runtime repository. They also addressed broken links within the source code and build commands. Furthermore, the user contributed to modifying the codebase, specifically updating .NET 5 obsoletion messages to be clearer and more consistent, and marking methods for deprecation based on security.
dotnetiotmobile
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