I'm really fond of linux, lvm, container technologies like lxc, nspawn and docker, and orchestration with kubernetes.
I know basic languages like (micro)python, java and C, but apart from that, I also enjoy dabbling with newer programming languages. My favorite programming language is Rust, but I also like haskell & Scala. I also know Crystal, but wasn't that impressed by the language (admittedly it is still in early development).
On the side, I'm also really interested in other fields, mainly medicine (mainly genetics, oncology and neurology), biology, astronomy, and engineering fields like materials science.