Rust
Since a few months now, I started doing every personal
projet with it. You might have already heard of it as it's
most growing language out there right now. It allows me to
build CLI/servers/WASM applications with ease and with high
efficiancy for the user.
Golang
Golang is my first learned compiled language (outside of
C/C# when studying). I used it a lot for building my own CLI
tools and few personal REST APIs. I also used it
professionally. Thanks to its simple syntax, garbage
collector and community, it is easy to start and develop a
new projet with it.
Python
I mainly use Python as a professionnal
developer. Entreprise do like it a lot as it's a quick to
develop an application with it and is one the most supported
language.