Arne Welzel
Lead Software Engineer at Corelight, Inc
Hanover, Lower Saxony, Germany
Summary
🤩
Rockstar🎓
Top SchoolArne Welzel is a Lead Software Engineer based in Hanover, Germany, with 14 years of experience building robust back-end and systems software. He is an active open-source contributor to high-impact projects like Zeek and uWSGI, where he has improved supervisor reliability, threading and I/O behavior, and fixed subtle resource leaks and parsing bugs. At Corelight he progressed from engineer to lead, focusing on scalable network analysis and stability for large deployments. His background spans kernel and embedded work—implementing virtio drivers for MINIX and touching ARM kernel internals—bringing low-level systems expertise to application-level security tooling. Notably, he took a year-long bike journey between roles, reflecting a streak of curiosity and resilience that influences his pragmatic approach to complex engineering problems.
14 years of coding experience
6 years of employment as a software developer
Bachelor’s Degree, Bachelor’s Degree at Fachhochschule HannoverMaster’s Degree, Master’s Degree at VU University Amsterdam
German, English
Stackoverflow
86reputation
2kreached
1answer
0questions
Github Skills (30)
c-language10
system-programming10
uwsgi10
python10
c1110
virtio10
c1710
blockdevice10
kernel10
driver10
device-driver10
performance-optimization10
sys10
kernel-mode10
cprogramming-language10
Programming languages (21)
Github contributions (5)
zeek/zeek
Oct 2019 - Jan 2023
Zeek is a powerful network analysis framework that is much different from the typical IDS you may know.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1228 reviews, 230 commits, 825 PRs in 3 years 3 months
Contributions summary:Arne's contributions primarily involved back-end development within the Zeek network analysis framework, focusing on enhancing the supervisor component. They implemented error handling, improving write operations, and debugging mechanisms. Their work also included incorporating a test case for a large cluster layout, indicating a focus on performance and stability. The user demonstrated proficiency in C++ development and system-level programming, as evidenced by their modifications to core functionalities such as threading, file-handling, and low-level code optimization within the software's structure.
dfirnsmsecurityanalysisnetworking
Stichting-MINIX-Research-Foundation/minix
Nov 2012 - Mar 2018
Official MINIX sources - Automatically replicated from gerrit.minix3.org
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:10 commits, 1 PR, 2 comments in 5 years 5 months
Contributions summary:Arne primarily focused on developing and improving the MINIX operating system's virtio drivers. Their work involved implementing a virtio block driver, which included handling requests, transferring data, and managing device interactions. Furthermore, they contributed to the virtio-net driver, addressing network interface interactions. The user's contributions extended to low-level system interactions, as evidenced by their modifications to the ARM kernel's exception handling and memory management code.
minixgerritreplicatedminix3sources
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