Agree. Also, not be judgemental about the state of things as in "which moron did this". Approach it from a point of understanding and respect rather than criticism. There are multiple reasons why the code base and tooling around it are in the crusty old state. They are usually decisions that engineers or middle management had no control over.

I've been with my company for a while now. Too often I find someone come in with the "this is trash and all of you are idiots" mentality. I've typically not been keen to help such folks. They usually soon ask for rescue from the very same dumpster fire they created.