Sounds like you aren't looking for a co-founder as much as you are looking for an employee. Guessing you don't have money to pay them though. If it is explorat

Sounds like you aren't looking for a co-founder as much as you are looking for an employee. Guessing you don't have money to pay them though. If it is exploratory, you should write code that you both own. Build something that isn't the core business, or even a part of the business.