How to choose an audio editor?

I have been editing my own show (solo, narrative) for four years. Most of what I do is cut out repeats, normalise breath down and add my intro and outro music. It is not a lot of work so I am happy to continue doing it. However, I have no audio skills and am wondering whether it is worth hiring an audio professional to master my voice and clean up the sound. Since it is an evergreen show, I may do this for the back catalogue.
Has anyone done this? What do I need to look out for when choosing an editor? Is Fiverr a good place to find someone? Any help much appreciated. Please no solicitation.