I would strongly suggest finding one. I have worked as a contractor for several startups building MVPs. A common theme I saw was 2 marketing/sales guys getting

I would strongly suggest finding one. I have worked as a contractor for several startups building MVPs. A common theme I saw was 2 marketing/sales guys getting taken advantage of by unscrupulous/unqualified offshore outsourcing firms. They burned a lot of money and then hired my company to start over and do it right. A technical cofounder would either be able to build much of the product or when hiring should be able to spot these missteps early on.