About
Josef Sejrek
Musician, photographer and software developer from Koblenz. Has run the site Budbrain.de since 2001 — originally as a gaming community, today as a personal platform for original music, photography and daily hardware and music news.
Music — DJJUPP
Under the artist name DJJUPP I have been producing electronic music for over 20 years: trance, acid, techno and experimental studies. You can find a selection in the Songs here on the site, more albums on Jamendo and on my YouTube channel.
Photography
The focus is on the region of Koblenz, Lahnstein and Mittelrhein. Some of my subjects have appeared in the Rhein-Zeitung series „Streifzüge durch Koblenz und Umgebung". You can find my own galleries under Photography, additional albums on Flickr.
Software
I develop applications across platforms — for Android, iOS, macOS, Windows and Linux: native apps in Swift, Objective-C, Java and Kotlin, high-performance modules in C++, cross-platform apps with React Native and JavaScript, backends and tooling in Python as well as web applications with PHP and PostgreSQL/MySQL.
An overview of my published apps and projects is available on the subsite Budbrain Software.