Stephen's interest in sustainability goes back to his middle-school days, when he tried to design and build a small wind turbine for a science fair. The experience left him with an abiding commitment to the vision of clean energy (and with a settled feeling that he was not cut out to be an engineer).

After graduating from the University of Pennsylvania, Stephen spent a few years working on urban publication education projects, and then moved on to a position at WGBH, the public broadcasting institution in Boston. There, he developed content management applications to support WGBH's television production research.

In 2000, Stephen left WGBH and decided to focus entirely on building web applications to support environmental sustainability. As a Boston-based consultant, he has worked on US and international projects in the environmental and clean energy fields.

Working with UNEP/GRID-Arendal, the environmental publishing powerhouse in Norway, Stephen was lead web developer for several innovative applications that serve policymakers, environmental journalists, managers in the private sector, and citizens around the world. In this capacity, he supported organizations such as the United Nations Environment Programme and the United Nations Economic Commission for Europe.

Stephen has also collaborated with Conservation Services Group as lead web developer for the pioneering web-based energy monitoring service, SolTrex. This service has helped states such as Texas and Massachusetts monitor energy production at buildings that have solar installations, while illustrating the present viability of clean energy for their residents.

In recent years, Stephen has been an invited speaker at national conferences on clean energy and green building, addressing such topics as data syndication in the energy sector and visual branding for sustainability. He enjoys these opportunities to share his experience and learn from others.

Stephen looks forward to partnering with others in developing Engine21 and Engine21-enabled applications.