Birk Blechschmidt
IoT DevOps Engineer at Liebherr Group
Ulm, Baden-Württemberg, Germany
Summary
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RockstarBirk Blechschmidt is an IoT DevOps engineer with a decade of hands-on experience building secure, reliable systems across embedded, cloud and container environments. Based in Ulm, he combines security-first engineering from roles at Telekom Security with deep systems and networking know-how gained contributing to notable open-source projects like gVisor and pyroute2. His gVisor work added terminal handling, signal forwarding and host file descriptor passing—features that improve interactive container workflows—while his pyroute2 and massdns contributions focused on robustness, nftables enhancements and performance. Comfortable at the intersection of DevOps, networking and security, he brings both research-rooted rigor from CISPA and practical production experience shipping resilient infrastructure.
10 years of coding experience
5 years of employment as a software developer
Github Skills (27)
container10
docker10
python10
filehandle10
file-descriptor10
linux10
system-design10
c1110
dockers10
networking10
c1710
go10
dns10
netlink10
nftables10
Programming languages (6)
Github contributions (5)
blechschmidt/massdns
Jun 2016 - Jan 2023
A high-performance DNS stub resolver for bulk lookups and reconnaissance (subdomain enumeration)
Role in this project:
Back-end Developer & System Architect
Back-end Developer & System ArchitectContributions:3 releases, 225 commits, 37 PRs in 6 years 7 months
Contributions summary:Birk primarily focused on improving the codebase's stability and functionality. They removed unused files, debug comments and security-related comments. Their contributions included implementing a "norecurse" option and fixing output related issues. They also transitioned the project from a custom DNS library to a well-known, maintained library and implemented features such as progress displays, error logging, and further code improvements.
dnsdns-resolverdns-resolutiondns-bruteforcerdns-client
svinota/pyroute2
Aug 2020 - Apr 2022
Python Netlink and PF_ROUTE library — network configuration and monitoring
Role in this project:Back-end Developer
Back-end DeveloperContributions:10 commits, 4 PRs, 3 comments in 1 year 8 months
Contributions summary:Birk primarily focused on enhancing the `pyroute2` library, specifically in the area of networking configuration with Netlink and nftables. Their contributions involved adding features, such as support for custom and negative priorities in nftables, and fixing bugs related to nftables rules and set element lists. The user also implemented improved batch handling for netlink messages and added error handling, indicating a focus on improving the reliability and functionality of the library.
monitoringnetlinknetwork-configurationpythonrtnl
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