I've been writing and editing in the U.S. publishing industry for more than 25 years, so you would be hiring a seasoned hand with a record of getting the job done.
My profile details that work history, along with a job progression demonstrating deep employer satisfaction with my work. I have directed the redesign of a 50,000-circulation U.S. daily newspaper, and edited and designed daily/weekly newspaper sections for many years. Formatting your book for KDP would be well within my comfort zone.
Do not overpay for this task, for it is essentially a process of thoroughly and rigorously setting Word styles and applying them through the document. You say you have a Doc file, so I'm assuming there are no images/graphics to be integrated. That would make it a bit more difficult and we would need to negotiate that.
I am new to this platform, so there is no feedback quite yet. The rate I have set in this bid is below market, since I need to build a foundation of work as I build my business.
Your project would be a step in that direction, though retaining me for this job would involve no step down in competence.
I am available for questions. If your book involves more than text, please message with details.
Good luck with your search.
Doug Williams