Zeesh is an observational cosmologist who studies the relic blackbody radiation of the early universe, called the Cosmic Microwave Background (CMB), to understand the origin and composition of the Universe and find answers to some perplexing questions in fundamental physics. With CMB team members at KIPAC, SLAC and Stanford, Zeesh builds CMB cameras and analyzes data generated by them. He is a member of the BICEP/Keck, South Pole Telescope (SPT-3G), Simons Observatory and CMB-S4 scientific collaborations. His current research interests include experimental bounds on cosmic inflation from CMB polarization, searches for dark matter using CMB data, and development of next-generation CMB camera readout technologies. Recent hardware development in SLAC’s CMB lab, with a focus on GHz superconducting microresonators, has cross cutting applications in CMB imaging, X-ray and particle detection, and beyond-SQL measurements.