With 9 years of experience as a licensed mechanical engineer, Nat MacDonald brings his skills in engineering and technology to TestFit as a Product Manager. Nat talks with customers regularly to design product procedures and algorithms that help architects and developers build at scale. He has been a speaker at various tech and AEC conferences including BILT, ASHRAE, and Autodesk University. Outside of work, you can find him tweeting with the AEC tech community or mountain biking in Portland, Maine.

Derien Stephens is a Product Owner at TestFit, helping to oversee the practical use of AI to simplify the real estate feasibility processes. With experience in VC-backed startups, Derien focuses on advancing web-related features for TestFit. His role ensures developers, architects, and contractors benefit from efficient solutions in the world of real estate feasibility.