Carl Masreliez
Principal Software Engineer at DocuSign
Redmond, Washington, United States
Summary
👤
Senior🎓
Top SchoolCarl Masreliez is a Principal Software Engineer with over two decades of hands-on experience building and optimizing large-scale .NET services, most recently leading performance engineering for Microsoft's OneService platform that powers Edge and Windows 11 feeds across hundreds of thousands of CPU cores. A C#/.NET specialist with C++ roots, he excels at diagnosing and fixing hard production problems—memory leaks, crashes, and latency hotspots—and has earned internal recognition for his impact on Bing projects. Now at DocuSign, he brings deep systems understanding, a practical obsession with low-level details, and a track record of shipping resilient, high-throughput services. He also contributes to cloud-native .NET ecosystems, adding external serializer support to the popular Orleans project, showing a commitment to open-source interoperability. Based in Redmond, he pairs a BS in Math and Computer Science with a relentless curiosity for how things work under the hood.
10 years of coding experience
25 years of employment as a software developer
Bachelor of Science - BS Mathematics and Computer Science, Bachelor of Science - BS Mathematics and Computer Science at Western Washington University
Github Skills (13)
net10
asp-net10
data-serialization10
csharp10
dotnet-core10
serialization10
distributed-systems9
dotnet9
actor8
concurrency8
remote-actors7
nuget7
dotnet-new7
Programming languages (1)
Github contributions (3)
dotnet/orleans
Nov 2015 - Jan 2017
Cloud Native application framework for .NET
Role in this project:
Back-end Developer
Back-end DeveloperContributions:24 commits, 17 PRs, 67 comments in 1 year 2 months
Contributions summary:Carl's primary contribution focused on adding support for external serializers within the Orleans framework. They introduced a `BondSerializer` class, demonstrating the use of Bond for serialization and deserialization. The commits involved creating serializer and deserializer methods, including deep copy functionality, and integrating these with the existing serialization manager. They also added NuGet package specifications and install/uninstall scripts for the bond serializer.
dotnetconcurrencycloud-computingdistributed-actorsframework
Carlm-MS/orleans
Oct 2015 - Jan 2017
Contributions:1 PR, 73 pushes, 23 branches in 1 year 3 months
actoractor-modelvirtual-actororleansdistributed
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