Tooling is pretty good; Ada has a package manager similar to Cargo (Alice: https://alire.ada.dev ), and you can install it pretty easily via GetAda ( https://getada.dev ), which brings in the compilers and any libraries you'd need.
(disclaimer: I'm the author of GetAda)
A bunch of libraries for various drivers or other useful things on https://alire.ada.dev/crates.html
(to include something like "ada_gui" in your ada project, you would just use alire, e.g. `alr with ada_gui`).
Much of Ada's webapp functionality is either interfacing with the Ada Web Server or gnoga (I've written a few servers using Ada Web Server, including one for an ".io" game).
Your favourite job board will have a tag for Ada. There are jobs out there. Some in lower level things like finance, reliability testing, embedded software. Some in higher level things like gaming, AI, web services.
There are fewer, and they do tend to be more demanding, but they certainly exist.