Daniel Preussker
Chief Executive Officer at f0o.dev / r0cket.net
Stockholm County, Sweden
Summary
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RockstarDaniel Preussker is a seasoned technology executive and hands-on engineer with 12 years of experience building secure, scalable cloud and infrastructure platforms from the ground up. As CEO of QuxLabs AB and a long-time security researcher, he blends leadership and operator instincts with practical exploit-proofing and PoC development across varied attack vectors. He has founded and led multiple companies, driven SRE practices at Magine Pro, and architected large-scale hybrid cloud streaming and Kubernetes productions for high-concurrency workloads. An active open-source contributor to LibreNMS, he improved mail handling, 2FA, alerting and device grouping—work that aligns with his focus on enterprise-grade, supportable OSS. Based in Stockholm, he’s known for pragmatic problem-solving and a “mad scientist” curiosity that turns unconventional ideas into reliable infrastructure.
12 years of coding experience
10 years of employment as a software developer
English, German, Spanish, Swedish
Github Skills (12)
php10
phpmailer10
back-end-development10
alerts9
irc-bot9
alertview9
alertdialog9
alertifyjs9
two-factor-authentication8
laravel6
laravel-mix6
phpunit4
Programming languages (21)
Github contributions (5)
librenms/librenms
Jan 2014 - May 2020
Community-based GPL-licensed network monitoring system
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 16 reviews, 953 commits in 6 years 5 months
Contributions summary:Daniel primarily worked on upgrading the PHPMailer library and implementing a generic `send_mail()` function within the LibreNMS project. Additionally, the user contributed to the development of an IRC bot, including the implementation of external commands and the integration of alerting features. Their contributions also extended to the integration of two-factor authentication and enhancements to device-grouping capabilities.
snmpcommunity-basedlicensedgplphp
librenms/librenms-mibs
May 2015 - Nov 2015
Contributions:5 commits, 3 PRs, 4 pushes in 6 months
party3rd-party
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