Just because a company is using technologies you love doesn't mean you'll be using technologies you love if you work there.
We use Go! (On one service (that's really a proof of concept (our main stack is ASP.NET)))
We use Go! (On one service (that's really a proof of concept (our main stack is ASP.NET)))
My younger and naive self used to over value the tech stack of a company, nowadays I don't care, there's way more important issues than the specific tech stack chosen like people, organization and processes.
A strong engineering team pushes for meaningful and well organized requirements collection and encoding, documentation of the business domain, values (meaningful) testing and is strongly oriented towards providing the best developer experience possible.
Languages and libraries do play a part in developer experience and satisfaction, but they are generally way less important.
In this market, employers are saying anything to get folks in the door. They're scrambling for workers, and a lot of times it's because their codebase is shit and folks are leaving in droves, so they dangle carrots to get folks to support their decaying crap.