Exterior Technologies Inc. (EXTECH) has hired Tim Metcalfe as a technical sales engineer. Reporting to EXTECH's general manager Jim Leslie, Metcalfe is responsible for assisting the sales team with technical support primarily focusing on daylight analysis.

Drawing from 15 years in the daylighting and architectural building products industry, Metcalfe's expertise includes a special focus on daylight modeling and sustainable building strategies.

He most recently worked as the vice president of architectural services for Duo-Gard Industries Inc., where he led the company's integrated building modeling strategies. His previous employers have included Wasco Skylights and Kallwall Corporation.

Metcalfe is a founding member of the International Building Performance Simulation Association (IBPSA) Boston chapter. He presented "Using Simulation to Optimize Daylighting Design" at the 2009 International Radiance and HDR Scientific Conference at Harvard University's Graduate School of Design.

Recognized as a resource by prestigious academic institutions, he has served as a consultant and lecturer at Harvard University, Massachusetts Institute of Technology, McGill University in Montreal, Wentworth Institute of Technology in Boston and Parsons The New School for Design in New York.

He earned a bachelor's degree in engineering from State University of New York.