1) In the US, this post indicates illegal discrimination. I know you're anonymous, but you should be pretty certain that no real-world employee can find this post. 2) Hire him on a contract basis for a month or two. Pay him what you'd pay a senior dev of whatever age. Evaluate him on the progress of the product, and have a trusted external party audit his work (if you yourself aren't technical enough). 3) Stop thinki…
2. Don't be surprised if he says no, he'd rather not get strung along for months. Seriously, why would someone ever accept this type of arrangement if they have sought after skills?