Physicist, Patent Engineer, Freelancer. Open for contracts ;-)
Heard about TeX and Latex around 1990, but only recently (July 2021) gave it a try ... better late than never ;-)
In terms of writing I draft content in Scrivener, check style in Papyrus (German version) and turn matured content into whatever form is needed (HTML, ePub, Word, Latex soon, ...)
Privately playing: drums, keyboard, Hammond organ, piano. With bands, before COVID19.