LaTeX is used to generate both the learner notes and presentation slides from the same source material for courses that I present. This allows for variants and makes it easy to change the template while keeping the notes and slides synchronised.
Python is used to download data from instruments, analysed the data, and to generate data products. Python is also used to monitor or control instruments.
I am currently learning Rust on the side and dabble around with full stack frameworks. Current favourites are Tauri or Axum with Astro, SolidJS and TailwindCSS.