Piper Jaffray Companies announced the addition of Robert Berstein as a managing director focused on internet and digital media within technology investment banking. Berstein joins Piper Jaffray with more than 20 years of investment banking and venture capital experience, and will be based in the firm’s Boston office. Berstein joins the firm from DCS Advisory (formerly Signal Hill), where he was a managing director focused on M&A and private capital advisory for internet companies. Last fall, Piper Jaffray also added Kate Winkler as a managing director in the technology group as part of its continued efforts to grow its technology investment banking practice.