Twitter has hired Sriram Krishnan, a former ad tech executive from Facebook and Snap, but he wont be working on ads. Krishnan, who left Snap earlier this year, just a month before the companys IPO, is joining Twitter as senior director of product. That means hell be responsible for a lot of the core features inside the main app, internally referred to as Bluebird, including timeline, direct messaging and search.   Read more