Joel Höner
Chief Technology Officer at zymtrace
Germany
Summary
🤩
Rockstar🎓
Top SchoolJoel Höner is a hands-on CTO and engineer with 11 years of experience building high-performance tooling and developer-facing systems from Germany. He co-founded zystem-io and co-created Zydis, a fast x86/x86-64 disassembly library, and has a track record of replacing and integrating disassemblers in major open-source projects like x64dbg. At Elastic and prior startups he shipped back-end systems while contributing deep low-level fixes—bug fixes in instruction decoding, fuzzing tools, and cross-platform build improvements for IDA plugins—demonstrating both systems-level expertise and practical release engineering. Comfortable moving between product leadership and debugging assembly-level issues, he focuses on making other engineers and tools markedly faster and more reliable.
11 years of coding experience
5 years of employment as a software developer
Bachelor of Science - BS, Computer Science, Bachelor of Science - BS, Computer Science at Fachhochschule Dortmund
Stackoverflow
442reputation
44kreached
10answers
5questions
Github Skills (28)
debugging10
debug10
assembly10
c-language10
multiplatform10
dis10
plugin-development10
cross-platform10
c1110
plugin10
x8610
c1710
code-generation10
ida10
x86-6410
Programming languages (25)
Github contributions (5)
zyantific/IDASkins
Sep 2014 - Jun 2019
Advanced skinning plugin for IDA Pro
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:8 releases, 58 commits, 19 PRs in 4 years 9 months
Contributions summary:Joel primarily contributed to build process improvements and cross-platform compatibility within the IDA Pro skinning plugin. They fixed build errors for the g++ compiler and updated build scripts to support 64-bit IDA on macOS. Additionally, the user modified the build configuration to correctly link against the IDA libraries, demonstrating a focus on ensuring the plugin functions correctly across different operating systems and IDA versions. Furthermore, they began adding support for IDA 7.0.
ida-propluginidaskinningjava
zyantific/zydis
May 2015 - Nov 2022
Fast and lightweight x86/x86-64 disassembler and code generation library
Role in this project:Back-end Developer
Back-end DeveloperContributions:8 releases, 133 reviews, 370 commits in 7 years 7 months
Contributions summary:Joel primarily contributed to the disassembler and code generation library, focusing on bug fixes and improvements. Their work involved addressing issues in instruction decoding, specifically fixing invalid array access errors within the `ZydisInstructionDecoder.cpp` file related to 3D-Now instructions. Additional contributions included adding a fuzzing input tool with dynamic output buffers, and general code refactoring.
amdcode-generationcodegenintelx86
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