Joe led Cadence Design Systems to be the number one EDA company in the world with revenues of nearly $1B, making it one of the 10 largest software companies in the world. In 1997, Chief Executive Magazine named Costello the top performing CEO of all publicly traded companies in North America. Costello has served on the boards of Oracle, Macromedia (Adobe), Mercury Interactive, and dozens of early technology companies. Joe is now leading Inpho to become the world leader in photonic chips for computing.