Stefan Meinecke
Geschäftsführer at greenSec GmbH
Munich, Bavaria, Germany
Summary
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RockstarStefan Meinecke is a Munich-based technology entrepreneur and Geschäftsführer with 12 years of hands-on software and leadership experience. He runs greenSec GmbH since 2016, blending operational management with deep technical involvement in backend and DevOps engineering. Stefan contributes to open-source infrastructure tooling—most notably improving stability and performance in the fast DNS lookup library zdns—demonstrating attention to system limits, cross-platform correctness, and code quality. His background shows a pragmatic focus on reliable, production-ready systems and tooling that prevent operational failure modes. Colleagues would describe him as an operator who pairs executive responsibility with the willingness to dive into low-level technical fixes.
12 years of coding experience
English, German
Github Skills (7)
system-administration10
go10
dns10
networking9
linux9
scanner8
devops7
Programming languages (17)
Github contributions (5)
zmap/zdns
Aug 2016 - May 2022
Fast DNS Lookup Library and CLI Tool
Role in this project:
Backend & DevOps Engineer
Backend & DevOps EngineerContributions:5 commits, 3 PRs, 2 issues in 5 years 9 months
Contributions summary:Stefan focused on improving the stability and performance of the DNS lookup library. They implemented checks for system resource limits (ulimit) to prevent potential issues. They also addressed minor code issues, such as variable naming in the DNS parsing code and ensuring correct platform compatibility, showing a focus on code quality. Furthermore, the user added license headers to some files.
clidns-lookupdnsscanner
disposable/disposable-email-domains
Jan 2018 - Jan 2023
Daily updated repository for https://github.com/disposable/disposable
Contributions:1656 commits, 5 PRs, 2535 pushes in 5 years 1 month
dnsdmarcdomain-nameemailupdated
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