Born and raised in Lebanon, CT, Jason graduated from Lyman Memorial High School in 2018 where he played second base and was a member of the 2017 state runner-up team. He then attended Three Rivers Community College before transferring to Eastern Connecticut State University, graduating in 2023. Jason began his coaching career in 2019 as the assistant coach under Steve Starr at Lebanon Middle School. From 2020-2025 he assisted legendary head coach Marty Gomez at Lyman Memorial High School. During Jason’s time at Lyman, the Bulldogs had a 78-59 record made the state tournament semifinals in 2023. He also coached as an assistant for Tri-County American Legion 15U and 17U from 2020-2023, both programs winning their zone in 2021. In his time with Tri County, 15u had a record of 54-31 and 17u had a record of 67-28. In 2026, Jason joined fellow GHTBL player Roger Moyer on the coaching staff at Bacon Academy in Colchester, CT. Jason began playing in the GHTBL in 2021 under manager Tyler Repoli. On the Brewers, Valliere is one of 22 members on the roster who previously played for Tri-County legion. He took over as manager in 2023 and that year led them to a 1st place regular season finish for the first time in over a decade. In three years at the helm, Valliere has led the Graphics to a 46-34 record. Jason currently works in the athletic department at the United States Coast Guard Academy in New London, CT and resides in Lebanon.