I use GNU/Linux since 1998 (SuSE at this time, installed from a pile of CD-ROMs) and installed my first Debian in 2003. I started contributing to Debian in September 2009 and began to package software that I wanted to use. I became Debian Maintainer in 2014 and got more involved in debian-science and debian-r for some time and also started to work on reproducible builds.
One of the main goals I want to contribute to is reproducible builds, but I also want to look into QA work and help keeping packages in good shape.
Philip Rinn