Choose NestJS as your back end framework

NestJS is surprisingly easy to test, though some modules cannot / is hard to be tested in isolation (iirc, decorators).

Their documentation is also very good.

It also support scheduling as well, either using Cron or interval based.

One of the hard part is developing own custom decorators and accessing services inside.

Overall it's a good framework IMO.

Straightforward, productive, reliable, widely supported, fast-growing, popular, battle-tested, robust.

Buzzword bingo!

The best open source backend framework there.

it has its downsides, but so far I feel very productive while I am working with this framework. It also has great documentation.

Too Javaish for my taste.