I'm no developer but when I see job offers like this especially if it's a developer post, you have to be specific what kind of PL you'll use unless I don't know that there's one specific PL that most DeFi developers use.
And since you have posted on this section, you are about to pay with an altcoins. With that, mind you include how much you'll pay, for the one that will take care of the post. I'm just suggesting though.