OK, I'm going to say this - I don't mean to be harsh, but I feel its important the message is clear: You absolutely should
not be having these people conduct first contact with developers. They are not trained for it, won't enjoy doing it and are likely to be very bad at it.
Hiring is hard. Its one of the hardest problems confronting any business, especially those that are dependent on technical talent. For a hard, business critical problems like this, you need your best, most qualified staff to handle it - not your cheapest or most inexperienced.
Little mistakes - mistaking Java for JavaScript - maybe understandable on planet earth, but on planet tech - where the community can be less forgiving than it imagines - is as bad a mistake as you can make. You're basically signalling - I don't know about you and I don't care about you. You will not hire quality people with this messaging and this recruitment experience.
The bottom line is, your founding team needs to take the lead. Like it or not, these are the people that in-demand developers are most likely to respond to. After all, developers themselves and are also unlikely to make the kind of mistakes that might ruin your employer brand, a critical asset for an early stage startup looking to hire. Furthermore, they are developers who have gone next level and become founders ready to hire developers - that's pretty much real world karma in World of Startup. They are your best, and likely, your only chance to hire the people you need. They have to grasp this, otherwise it won't matter what techniques or concepts you discover or deploy.