Kevin Gosse
Principal Engineer at JetBrains
Greater Paris Metropolitan Region France
Summary
🤩
Rockstar🎓
Top SchoolKevin Gosse is a Principal Engineer based in the Greater Paris area with 11 years of experience building and optimizing backend systems and developer-facing runtimes. He has held senior engineering and staff roles at Datadog and Criteo and now drives engineering efforts at JetBrains, combining technical leadership with hands-on performance work. Kevin is an active open-source contributor to high-profile .NET projects—fixing subtle runtime race conditions in dotnet/runtime and shaving allocations and locks out of Datadog’s dd-trace-dotnet rate limiter—demonstrating a focus on reliability and low-level correctness. His work on Windows Forms and runtime internals shows an unusual blend of legacy-API refactoring, security-conscious cleanup, and deep debugging. He also contributes to technical documentation, ensuring that performance and runtime changes are understandable by users. Colleagues would describe him as a pragmatic engineer who prefers surgical fixes and measurable optimizations over broad rewrites.
11 years of coding experience
18 years of employment as a software developer
EFREI - Grande école du numérique
Stackoverflow
38,732reputation
1.5mreached
1,054answers
7questions
silverlight
top-5%
regex
top-5%
async-await
top-5%
xna
top-5%
bluetooth
top-5%
uwp
top-5%
Github Skills (43)
debugging10
debug10
hugo10
tracer10
xaml10
multithreading10
net10
dotnet-new10
dotnet10
windows-phone10
refactor10
apm10
windows-forms10
asp-net10
performance-optimization10
Programming languages (15)
Github contributions (5)
DataDog/dd-trace-dotnet
Jun 2020 - Jan 2023
.NET Client Library for Datadog APM
Role in this project:
Back-end Developer & Performance Engineer
Back-end Developer & Performance EngineerContributions:7 releases, 1630 reviews, 413 commits in 2 years 8 months
Contributions summary:Kevin primarily focused on optimizing the performance of the .NET tracing client library for Datadog APM, specifically the rate limiter component. They improved the rate limiter and removed locking in various components of the codebase. The user also refactored components to reduce the number of object allocations, resulting in performance improvements for the overall tracing infrastructure. The contributions involved inlining, and code optimization across multiple areas.
net-librarydotnetprofilingapmtracing
dotnet/winforms
Dec 2018 - Jan 2019
Windows Forms is a .NET UI framework for building Windows desktop applications.
Role in this project:Software Engineer
Software EngineerContributions:5 commits, 5 PRs, 25 comments in 1 month
Contributions summary:Kevin primarily focused on refactoring and improving the codebase of the .NET Windows Forms framework. Their work involved removing obsolete or deprecated code elements, such as `SecurityCritical` attributes and `SuppressUnmanagedCodeSecurityAttribute`, as well as addressing compiler warnings. The user's contributions also included eliminating unused fields and removing usages of `WebPermission`. These changes suggest a focus on code quality and security best practices.
dotnetuwpwindows-desktopwindowsui-framework
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