I am one of the k6 developers. I've commented in a bunch of threads here, but if you have any questions, feel free to AMA :) I'll be around for the next ~1h and then probably later in the day as well.
Is there some way you can do whatever it is AWS CDK does under the hood to provide language bindings to other languages for writing tests? That'd be killer. I want to be able to write the tests in my backend language.
Unfortunately not... At some point in the far future, we might release support for Go "scripting" [1] or we might extend xk6 [2] so it allows different script types, but those things are far from certain.