Lassner began his doctorate degree in communication and information sciences at the University of Hawaiʻi while working as a contractor. After three years of renewed contracts, he was given an entry-level staff position. He was a computer specialist until 1989 before being appointed the director of Information Technology. In 1994, Lassner was charged with creating the
information technology organization across the University of Hawaiʻi system. While serving in these roles, he served as the principal investigator for
Maui High Performance Computing Center and for the
Pacific Disaster Center. He also led projects in collaboration with the Hawai‘i Education and Research Network through funding from the
National Science Foundation. As a result of his academic efforts, he was also elected to the Board of Directors of EDUCAUSE for a four-year term. Following the resignation of President
M. R. C. Greenwood, Lassner was approached by the board of regents to assume the position. In his first year as president, Lassner was invited by United States President
Barack Obama to attend the White House College Opportunity Summit. He was the 2018 recipient of the Christine Haska Distinguished Service Award from the
Corporation for Education Network Initiatives in California. In July 2019, the Department of Land and Natural Resources reported at least 33 kupuna were arrested by police on Mauna Kea. As a result of the arrests, members of the UH faculty and staff from various departments asked him to halt the
Thirty Meter Telescope construction and faculty from the Kamakakuokalani Center for Hawaiian Studies called for his resignation. Following this, Lassner said he's "struggling with how the project is dividing the university and broader community" and called it "the greatest challenge he's faced as UH president." During the
COVID-19 pandemic, Lassner established a "blue ribbon" committee to provide strategic vision and advice for the future of UH Mānoa athletics. He also encouraged the partnership between the
John A. Burns School of Medicine and the City and County of Honolulu to create a lab at the medical school for COVID-19 research and testing. ==References==