NodeJS is just a server, isn't it? To create an app, you need full blown framework like Express, Geddy or more recently Yahoo! Mojito.
Gaurav works with Yahoo! India as Principal Engineer, spending most of his time on architecting and building frameworks for modern-day web applications, portable across devices, browsers and form factors.
Prior to joining Yahoo!, he ran his venture into education. He started his career with Adobe working in their R&D team.
He is - "Not a nerd yet"!