Dr. Marina Gertsvolf is the Team Leader for Frequency and Time group at NRC and is responsible for realizing the second, an SI unit of time, and for maintaining and disseminating the official time for Canada, UTC(NRC). Dr. Gertsvolf received her PhD from the University of Ottawa in 2009 and joined NRC as a research officer the same year. She has been working on and leading a variety of projects from caesium fountain development to frequency comb construction, timescale generation dissemination and maintenance, as well as on novel methods for calibration and traceability.