Clean corporate theme with full-function needed !!!

We are looking for someone who can provide clean, full-functional with technology-related appeal wordpress theme for our corporation. The theme must be without any error and can run perfectly in full function. I'm not serious whether it's unique or not. Example that I want most : [login to view URL] I'd like to see and select from "DEMO" so that you have to provide demo url at first. Happy Bidding