Kaustav graduated from Cornell University in 2019 with a Master's in Design and Environmental Analysis. He worked as a mechanical design engineer for 2 years in Philadelphia, where he gained experience in energy modeling. He joined AECOM's High-Performance Buildings and Communities team as an Energy Modeler in 2021, and is responsible for advanced energy simulation, building design assistance on HVAC systems, and sustainability consulting for diverse building types, including LEED and Net-Zero energy projects.