Dirk Holzapfel
Technical Cofounder at Steady
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolDirk Holzapfel is a pragmatic technical cofounder and backend engineer based in Berlin with over 15 years of professional IT experience and a Master’s in Applied Computer Science. He blends hands-on development in Elixir and Ruby with test-driven, agile practices to rapidly turn ideas into scalable MVPs and long-lived products. Dirk has led engineering teams and founded multiple companies, guiding projects from crowdfunding platforms to publisher-focused subscription infrastructure (Steady). His background spans complex backend challenges—from vehicle routing and real-time event sequences to large-scale CMS APIs—paired with deep experience in PostgreSQL and service architectures. Colleagues describe him as a builder who favors practical, durable solutions over perfection for its own sake, and who consistently mentors teams through product and technical transitions.
10 years of coding experience
20 years of employment as a software developer
Physics, Physics at Freie Universität BerlinComputer Science, Computer Science at Humboldt-Universität zu BerlinMaster’s Degree Applied Computer Science, Master’s Degree Applied Computer Science at University of Applied Sciences Berlin
German, English, Spanish
Github Skills (54)
headers10
paths10
redirection10
postgresql9
java9
plug9
sql9
data-mapping9
database9
locale9
gettext8
ujs8
progressive-enhancement8
unobtrusive8
ueberauth7
Programming languages (5)
Github contributions (5)
steady-media/steady-api-docs
Apr 2017 - Apr 2019
Steady API Documentation
Contributions:2 PRs, 9 pushes, 3 branches in 2 years
rest-apiapiopenapiapi-documentation
dirkholzapfel/abuelo
Jan 2016 - Dec 2016
Contributions:3 PRs, 27 pushes, 1 branch in 11 months
graph-theorytheorygraph-algorithmsgraph
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