Facebook. See http://www.quora.com/For-top-technology-companies-what-of-their-engineer-time-is-devoted-to-tough-groundbreaking-intrinsically-satisfying-problems

Facebook. See http://www.quora.com/For-top-technology-companies-what-of-their-engineer-time-is-devoted-to-tough-groundbreaking-intrinsically-satisfying-problems-and-what-is-routine-grunt-work-a-1X-engineer-could-handle/answer/Yishan-Wong http://www.quora.com/For-top-technology-companies-what-of-th...