If you have an EE background, you have the knowledge to run the technology side of the business. And while the idea and marketing is likely yours, you may well want to instead be looking for someone with more customer side and business ops experience, rather than a technical cofounder. As a dual EE/CS degree myself I can tell you that while there are differences, the general principles aren't that radically different.
What IS different is that most engineers are fairly poor at marketing and customer engagement and most importantly sales. So I would be looking more for someone to lead your Sales and Marketing and business ops
I do want to challenge you a bit on that. Since you lack a business background, how do you know you have an actual Minimally VIABLE Product? Part of the reason for bringing someone onboard who has a business view is to help flesh out the lean startup worksheet and really identify what the Minimum features are of a Viable product.
There are startups that have succeeded purely from a technology background... but they are much rarer than ones that have a more balanced leadership team. In some cases that is a technology person who has half a decade or so of business experience. In other cases its like Apple was with Jobs and Woz.
Now one important caveat. By business experience I do NOT mean someone who has gotten an MBA. In fact MBAs have relatively poor track records in starting successful businesses. No I mean someone who actually has some business experience (like Gates bringing in Steve Ballmer after Ballmer spent a few years at P&G)