An engineer creates a product with most fundamental functions and is almost ready to establish a new company. He wants me to be in charge of the marketing for the new company/product. For now, only he and I will be working for the company for the next 1~2 years until we have money to hire more people. We are both work part-time on this project/company. There is no pay for this position (there is no funding or revenue now), and only stocks are offered.
The product is demo ready which still needs to be completed with more detailed features and production level visual appearing. My major responsibility (marketing) is to bring in as many as trial users and create case studies and testimonials, and then market it to the pay customers.
Am I a cofounder? and how many equity shares should I take? I don't want (or expect) 50-50 split since he has created the product before I join him to start the company.
Should we also talk about the future hiring opportunity/offer once the company has incomes or funding? I can not work without pay forever. How to define when I should expect regular salary or never?
How is this typically done when 2nd, 3rd, 4th people join the founder in a startup without pay?