AUBURN – Harriman, a full-service architecture and engineering firm, announces that Daniel P. Diffin has received his professional license to practice civil engineering in Maine. He also recently received Leadership in Energy and Environmental Design accreditation from the U.S. Green Building Council. He has worked in Harriman’s Auburn office for more than a year as a designer in the civil and environmental engineering department.

At Harriman, Diffin is working on projects including a military mountain-terrain training center in Maine, the Durham Elementary School, and site studies for several high schools. He holds a bachelor of science degree in civil engineering from the University of Maine at Orono.

Diffen lives in Auburn with his wife and their daughter.