I am business developer for companies. Even better if the product is already on air.
you're getting advise all over the map here. first, you need to better understand and articulate what you need. You say you are looking for a 'business developer" when i suspect what you really need is a sales person or combination sales and marketing - 'business development' is about generating demand/lead/sales/revenue indirectly via partnerships (often resellers or partner orgs) and typically comes into play after your direct sales and marketing machine is up and running. Sales is direct lead/revenue generation via customers. somehow the term "business development" has morphed over the years to encompass traditional biz dev and sales. It's like a 'business' person saying "i need a CTO" (to write code) when what they likely need is a developer, and then, of course, you need to know what kind of developer. So make sure you ask for what you really need. Second, there are different skill sets required depending on A) what you are selling (technical, not technical, simple, complex, etc.), B) to whom (consumers, SMB, large enterprises, education, nonprofit, etc.) and C) for how much (value of you avg. sale). As a developer You know there are different skill sets required depending what you are building - a niche mobile app, a mobile game, massive multip player game, a simple web site, a sophisticated SaaS application, AI system, etc. Same goes for sales and biz del ... and marketing to an extent. So "how to find a business developer" depends a lot on what skills you need. What little i can glean from you CFL profile indicates you are targeting SMB customers. SMB is a challenging profile. Deals size is relatively small (avg. deal size is say <$1,000?) which lends itself more toward a marketing only or marketing and inside-sales model than a biz dev or outside sales model. This is a skill set focused more on marketing and high-volume lead gen, prospecting and closing as opposed to large-deal detailed needs analysis, strategic selling, relationship building. The more you can tell us about A, B and C above the better we can answer your question. good luck. feel free to DM me if you need more detail.
You can use CoFoundersLab, Indeed, and Angel.co to find a good business developer. You need to make a fair proposition to get a good business developer to onboard with your startup.