UX could be improved by not using small dark text on a dark background and a main navigation below the fold on the right side.

The site seems to be catering to two completely different audiences. There's the corporate deciders who will be reassured by the "social proof" logos of Microsoft et al. And there's the 1337 script kiddies who will feel at home with an unreadable color scheme. It seems like many node.js-related sites have this type of unusable color scheme, much like the Flash sites of yesteryear.