Alexander Sosna
Senior Database Reliability Engineer
Nettetal, North Rhine-Westphalia, Germany
Summary
👤
Senior🎓
Top SchoolAlexander Sosna is a Senior Database Reliability Engineer with 12 years of experience designing, operating, and scaling high-availability PostgreSQL infrastructures for global services. At GitLab he led zero-downtime major upgrades and a seamless decomposition of a million-tps monolith into a separate CI/CD cluster, delivering transparent migrations at scale. He blends deep hands-on DBA expertise, automation and architecture with team leadership—having built and led database teams, run cross-functional projects, and stepped into VP-level business development during an acquisition transition. An active educator, he taught IT security, created a long-running CTF training platform, and contributed a Linux Kinect driver in earlier R&D work, showing a knack for practical reverse engineering and teaching. Based in Nettetal, Germany, he is an Open Source and security enthusiast who enjoys mentoring others and turning complex operational challenges into repeatable, customer-transparent solutions.
12 years of coding experience
6 years of employment as a software developer
Master of Science (M.Sc.), Computer Science, Master of Science (M.Sc.), Computer Science at Hochschule NiederrheinAllgemeine Fachhochschulreife, Allgemeine Fachhochschulreife at Berufskolleg Platz der Republik für Technik und Medien Mönchengladbach
German, English
Github Skills (140)
programming-language10
python10
automation10
backup10
motion-detection10
pgbackrest10
ssh10
monitoring10
pgbadger10
laravel10
socket10
kinect10
ansible10
golang10
go10
Programming languages (15)
Github contributions (5)
xxorde/pgglaskugel
Oct 2016 - Mar 2019
Contributions:173 commits, 14 PRs, 90 pushes in 2 years 4 months
local-backupsnasobject-storepostgrespostgresql
xxorde/librekinect
Apr 2014 - Apr 2017
Depth data from a kinect sensor! Small and fast kernel driver. Also for embedded devices like the raspberry pi!
Contributions:10 commits, 3 PRs, 3 pushes in 3 years
driverembeddedkernelkinectraspberry-pi
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