In 2015, he co-founded Dor with Michael Brand motivated by that passion, recruiting and leading a lean-minded team of full-stack developers and firmware engineers to shape a sophisticated product that uses advanced algorithms and machine learning to deliver industry-leading accuracy — at previously unheard-of low power usage levels — in order to provide valuable data and an unmatched experience for users. Before founding Dor, Gregg managed the software team at the nutrition analytics startup MarkOne and served on the AirPlay and iAP protocol teams at Apple.