Engineering skills translate well between stacks and framework/library skills are only good for a couple years. Can you break down a complex problem into estimatable chunks that can potentially be delegated as well? Can you design a system that solves a business problem? Awesome! Nobody will ask you about framework du jour.
Honestly I’d say that if you’re talking at the level of which libraries/frameworks you know, you’ve already lost. That’s junior/midlevel engineer stuff.
Senior engineers solve problems. Junior engineers code in frameworks.
Most code that’s used in production has so much custom stuff anyway that it might well be its own framework.