Tsuyosho Shiga has 28 years of experience in geotechnical and geological engineering for civil works and environmental projects where he served as a main engineer and a project manager. He has expertise in soil mechanics, particularly groundwater behavior in urban areas. He worked in Viet Nam at ATK’s Ho Chi Min City office for 3 years, starting in October 2016. He joined a research project for the enhancement of ground source heat pump in Japan in 2020.