Hi there. I'm Mario, sysadmin from Argentina with 25 years experience. I'm focused on infrastructure projects, like server installations, databases, web servers, IP connectivity, virtualization, etc.
I do Wordpress migrations extremely often, normally I do it manually via ssh (db export, files export, files import, db import, dns migration), and also have exprience manipulating db export to fix URLs just like you mention. So, this should be a quick job for me.
I usually work via Teamviewer or anydesk so you don't have to share any passwords with me and if needed, I test everything in my lab before deploying it customer environment.