YouTube is undertaking its biggest hiring spree ever, with plans to increase staff by more than 30 percent with 200 new jobs in 2011. Owned by Google, the company is primarily seeking software engineers to design, implement and test new products. They need to know how to high-volume production applications, prototypes quickly, and write server-side code, according one of its job listings on Dice. The company's also looking for user experience designers and researchers, and Web developers experienced in Linux, Unix, Flash and standards like HTML, CSS, XML and Javascript. Most of these positions are in San Bruno and Mountain View, Calif. Other openings will be overseas in cities including Milan, St. Petersburg, Tokyo and Zurich. Google said YouTube doubled its revenue in 2010. Credit Suisse recently estimated the division will earn $1.1 billion in revenue this year. -- Chandler Harris