Benjamin Bannier
Senior Open Source Developer at Corelight, Inc
Hamburg, Germany
Summary
🤩
Rockstar🎓
Top SchoolBenjamin Bannier is a Senior Open Source Developer with 15 years of experience building and hardening distributed systems and network security tooling from Hamburg. An Apache Mesos PMC member and long-time contributor to projects like Zeek and DC/OS, he combines deep C++ and systems expertise with pragmatic DevOps and test-automation skills. At Corelight he focuses on open-source network analysis and protocol handling—work that includes Geneve decapsulation and SSH protocol hardening—and at Mesosphere he strengthened integration testing and resource allocation in large-scale cluster software. Trained as a physicist (PhD/M.A. background), he brings a methodical, research-driven approach to debugging complex concurrency and protocol bugs that often lurk at the intersection of networking and security.
15 years of coding experience
11 years of employment as a software developer
Dipl. Phys., Physics, Dipl. Phys., Physics at Technische Universität DresdenHigh Energy Physics, High Energy Physics at National Technical University of AthensPhD, Nuclear Physics, PhD, Nuclear Physics at State University of New York at Stony BrookMaster of Arts (M.A.), Physics, Master of Arts (M.A.), Physics at Stony Brook University
English, German
Stackoverflow
57,108reputation
5.7mreached
260answers
14questions
git
top-1%
shell
top-1%
numpy
top-1%
latex
top-5%
matplotlib
top-5%
makefile
top-5%
Github Skills (43)
git10
mesos10
c-language10
pytest10
python10
network-analysis10
testing10
bash10
zeek10
network-monitoring10
dcos10
numpy10
security10
geneve10
network-protocol10
Programming languages (25)
Github contributions (5)
zeek/zeek
Nov 2020 - 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 & Security Engineer
Back-end Developer & Security EngineerContributions:335 reviews, 59 commits, 185 PRs in 2 years 2 months
Contributions summary:Benjamin primarily contributed to the Zeek network analysis framework by adding and improving support for network protocols, with a strong emphasis on security-related areas. They added support for Geneve packet decapitation and implemented improvements to the handling of SSH protocol versions. Furthermore, the user fixed a critical bug related to the computation of Geneve option lengths and implemented security-related improvements. In addition, they contributed to the addition and improvements of existing tests.
dfirnsmsecurityanalysisnetworking
dcos/dcos
Dec 2016 - Jan 2020
DC/OS - The Datacenter Operating System
Role in this project:DevOps Engineer & QA Engineer / Test Automation Engineer
DevOps Engineer & QA Engineer / Test Automation EngineerContributions:19 commits, 33 PRs, 81 comments in 3 years 1 month
Contributions summary:Benjamin primarily contributes to the integration testing framework for DC/OS. They added tests to verify functionality such as resource limits, validating executor communication via domain sockets, and adding diagnostic information. Their work includes modifying existing test code and writing new tests to ensure the proper behavior of the DC/OS cluster. They also made changes to the Mesos master related to resource allocation.
kernelvdiisolationpythondcos
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.