In my experience, when we decided to hire a not expert designer, we've planned how to put her/him in the workflow according the specific needs from the team POV.
It takes time, of course, and a lot of effort from both sides (company and new joiner).
What really matters, to me, is having a shared plan in terms of goals and having a shared metric to evaluate them.
For instance: the new joiner will be part of the design process related to the usability test, let's try to build a easy prototype with our toolkit and see how is high the learning curve.
At the end of the process both of us will be able to clarify what was well done and where we see room for improvements.
From my side I really appreciate curiosity and the will to face stereotypes as wire-framing is boring, I'm a designer I need to prepare pixel perfect deliverables and so on.
I hope this will help