Just looking at his two blog posts, I think that the company's hiring practice worked perfectly and weeded out someone who may be technically competent, but is toxic to the work environment.

His tone is aggressive and completely self centred - imagine trying to have a meeting with him where he sticks stubbornly to his opinion, refusing to listen to other opinions and potentially throws tantrums whenever he doesn't get his own way.

Secondly, the fact he refuses to pair program with a developer on the existing code base ' to see how he works within a team / on code - suggests that he probably would equally be unlikely to do anything outside of what he is technically being paid for.

I'm not saying anyone should work for free, but sometimes you have to help out, whether it's working a bit later or helping during a crunch time. He comes across like he only would want to work on things that interest him, during the hours he's paid and then be out the door.

I think the company that was hiring did a good job of filtering him out.