Glen has three decades of experience in the technology area. He recently accepted the challenge of creating the Center for Advanced Research for PricewaterhouseCoopers, the world's largest professional services organization. In this capacity, he works at the intersection of technology, business, and public policy. He has also founded or co-founded three successful businesses, including the world's first Internet Service Provider, and CenterBeam.

Glen is also a former executive vice president and chief technology officer for Novell. He founded the company’s corporate research and development organization, and provided architectural leadership for Novell's products. Previously, he also guided the Department of Defense’s research into end-system computer security, and he served as the technology liaison to the Clinton White House. Additionally, Glen had responsibility for academic information technology on Maryland’s public university campuses. He also advised Maryland’s governor on technology issues.