As a technical person, if I wanted to hire a technical co-founder, I'd probably:

- get started on my own without them

- if I was lucky enough to find someone I actually wanted to partner with, I'd make sure we'd be able & willing to own code both of us had written

- not get too attached to my pre-founder code (probably a good idea in general)

- offer them a nominal hourly rate for a week or two just to validate skills & compatibility while they decide for themselves if they really wanna do a startup with me

- when they fully committed, offer them the same comp package I offered myself, including number of shares

- hope it all works out!