Grzegorz Czarnecki
Security Researcher at STM Cyber
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolGrzegorz Czarnecki is a security researcher and compiler engineer with five years of experience building low-level, performance-critical systems and tooling. He has worked on porting the .NET JIT to RISC-V and contributed notable backend work to the widely used dotnet/runtime project, implementing instruction emitters and fixing disassembler and encoding issues. Comfortable in C++ and LLVM, he has implemented hand-written vector intrinsics across ARM and x86 and developed a static analysis engine for compiler frontends. A researcher at heart, he’s pursuing advanced degrees in computer science and AI while exploring neural network architectures at both the implementation and design levels. He thrives on hard problems and extreme optimization, often reading C++ drafts and deep technical books to stay ahead of language and architecture changes. Colleagues count on him for precise, innovative solutions that bridge research and production-grade compiler and security work.
5 years of coding experience
3 years of employment as a software developer
Doktor inżynier (Dr inż.) Informatyka techniczna i telekomunikacja, Doktor inżynier (Dr inż.) Informatyka techniczna i telekomunikacja at Warsaw University of Technology
Github Skills (15)
net10
asp-net10
risc-v10
encode10
assembly10
c-language10
cprogramming-language10
encoding10
assembler10
debug9
dotnet9
debugging9
dotnet-new8
wan8
fest6
Programming languages (2)
Github contributions (5)
dotnet/runtime
Nov 2023 - Oct 2024
.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:94 reviews, 10 PRs, 55 comments in 11 months
Contributions summary:Grzegorz primarily contributed to the RISC-V backend implementation within the .NET runtime project. Their work involved fixing bugs, refactoring code, and adding features related to the disassembler and instruction encoding. They implemented new instruction emitters and resolved issues related to overflow checks and label printing, which were vital for the project's release. These changes demonstrate a strong focus on the core functionality of the RISC-V architecture within the .NET runtime environment.
dotnetruntimelinuxcsharpxamarin
Bajtazar/MPGL
May 2021 - Mar 2023
Contributions:1129 commits, 21 PRs, 201 pushes in 1 year 10 months
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