Janusz Wróbel is a software developer with a decade of experience building and modernizing .NET-based systems, currently delivering high-performance solutions at G-Research from his base in Stony Stratford. He has a strong background in C#, Windows Forms desktop applications and legacy migrations, and earlier work includes telecom system testing and a research internship focused on neural-network investigation tools in Python. Janusz is also an active contributor to the dotnet/fsharp repository, where he has refactored and optimized core compiler services, implemented parallel type-checking improvements and fixed expression-test issues—showing comfort with compiler internals and large open-source codebases. He holds an MS and BS in Computer Science from Uniwersytet Wrocławski and combines practical production experience with deep technical curiosity about language tooling and performance.
10 years of coding experience
3 years of employment as a software developer
Bachelor of Science (BS), Computer Science, Bachelor of Science (BS), Computer Science at Uniwersytet Wrocławski
The F# compiler, F# core library, F# language service, and F# tooling integration for Visual Studio
Role in this project:
Back-end Developer
Contributions:81 reviews, 43 commits, 19 PRs in 7 months
Contributions summary:Janusz primarily contributed to the F# compiler service within the dotnet/fsharp repository. Their work involved refactoring, fixing bugs, and optimizing the code related to the compilation process. The commits demonstrate changes in the core service files, including modifications related to project analysis, parallel type-checking implementation, and activity logging. The user also updated tests and addressed issues with the expression tests.
Generates and runs benchmarks for FSharp.Compiler.Service
Contributions:11 releases, 2 reviews, 77 commits in 3 months
fsharprunsbenchmarkcompilerbenchmarks
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