I'd stay away from newish technologies like node.js (even though I love it), also I'd stay away from frameworks that have had their days (CakePHP). NodeJs has fell over a few times on my dev server for unknown reasons. When we talk enterprise app, that's just a big risk.
I mean you seem to know php. So maybe PHP is not bad to keep betting on. Make your own home brew of MVC framework that is lightweight and fits your needs. CakePHP comes with the sources.
Also Code Igniter is a framework I respect, once again in PHP. Developers for it seem harder to find though. Finally there is Zend. I prefer Code Igniter over Zend because I find Zend too complex, but it's also a perfectly good option.