Sang is a Thermal Systems Engineer at the Smithsonian Astrophysical Observatory. He is a PI of the Ultra-stable sub-milli-Kelvin Picometer scale metrology systems working closely with NASA Goddard Space Flight Center. He is among a handful of technical subject matter experts working on technology development and demonstration for NASA's future flagship mission as suggested in the 2020 Astro decadal survey. He has more than 35 years of engineering experiences, mostly in Aerospace and Space-borne Astrophysical projects. He was a part of the successful completion of the JWST cryo-vac tests at NASA JSC Houston and 'survived' through the Hurricane Harvey on site. He was involved in numerous other projects at SAO including Hinode-XRT (formerly Solar-B), SDO-AIA, IRIS, Parker-Solar-Probe SWEAP, MMIRS, and G-CLEF. He has spent unaccountable number of hours at thermal-vacuum chambers and environmental test facilities. He is an avid sailor, accomplished skier, and a dad always motivating his two daughters to be active and creative. He also creates amazing meals for the family, dear friends, and a very special person in his life.