Sean Killeen
VP Innovation And Products
Virginia, United States
Summary
🤩
Rockstar🎓
Top SchoolSean Killeen is a transformational technology leader and VP of Innovation and Products with 12 years of hands-on experience building high-performing engineering organizations that deliver value-oriented, quality software. He blends deep .NET and DevOps expertise with coaching and training—an active Microsoft MVP and national speaker who still contributes code and docs to prominent OSS projects like the .NET SDK and NUnit. Sean has a track record of rescuing and modernizing large legacy systems, automating cloud costs and delivery pipelines, and creating internal tools that saved time and money. He’s equally at home refactoring actor-model internals in Akka.NET, improving GitHub Actions linters, or leading documentation efforts that improve developer UX. Colleagues rely on him to shift mindsets toward organizational agility, automation, and DevOps while growing exceptional technical careers.
12 years of coding experience
13 years of employment as a software developer
B.A., American Studies, English, Computer Science, B.A., American Studies, English, Computer Science at Muhlenberg College
English
Stackoverflow
8,869reputation
782kreached
71answers
175questions
Github Skills (46)
markdown10
github-ci10
website-development10
net-sdk10
scripting10
net10
nunit10
dotnet-new10
dotnet10
asp-net-core10
akka10
cicd10
regular-expression10
asp-net10
script10
Programming languages (27)
Github contributions (5)
nunit/docs
Jun 2020 - Jan 2023
Documentation for all active NUnit projects
Role in this project:
Technical Writer
Technical WriterContributions:292 reviews, 447 commits, 496 PRs in 2 years 7 months
Contributions summary:Sean primarily contributed to the project by adding, updating, and organizing documentation for the NUnit framework. Their work involved creating and modifying Markdown files, adding code snippets, and updating navigation links within the documentation. The user also migrated legacy documentation and added new resources to the documentation, enhancing the overall user experience and accessibility of the project's resources.
dotnetnunit
akkadotnet/akka.net
Feb 2015 - Oct 2022
Canonical actor model implementation for .NET with local + distributed actors in C# and F#.
Role in this project:Back-end Developer
Back-end DeveloperContributions:2 reviews, 64 commits, 14 PRs in 7 years 9 months
Contributions summary:Sean primarily refactored the codebase by renaming classes and interfaces related to the actor model, specifically within the FSM and remote transport components. They updated several files, changing naming conventions and implementing interfaces to improve code clarity and maintainability. Furthermore, the user worked on adjustments to serialization and deserialization of messages, including changes to classes used in remote communication and testing. Their contributions focused on internal API improvements.
dotnetconcurrencydistributed-actorsdistributed-programmingc-sharp
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