Hi, I’m Christoph and I live in Paderborn, Germany
My first contribution to JabRef was somewhere around mid of 2016.
During my bachelor studies I used JabRef together with LaTeX to write my seminar thesis paper and my bachelor thesis. The working group I wrote my thesis recommended JabRef for people working with LaTeX.
Turned out, JabRef was really helpful and when I noticed that it was written in Java and I also had experience in programming with Java I decided to start contributing, giving back something. I probably discovered a bug or an issue before…
And today I am still here contributing in my free time. And I felt really welcome in this community and quickly became addicted to JabRef 
During my professional work, I work as software developer/researcher for a non profit organization. We do research projects in the domain of Digitization for Civil Safety. I still use JabRef at work to collect research documents for a topic.