As a true freshman at North Dakota State in 2017, Jensen redshirted as the Bison won the FCS national championship.[3][4] He appeared in 15 games as a backup offensive lineman in 2018 as North Dakota State won another national championship.[3][4] He moved into a starting role in the 2019 season, starting all 16 games at left guard while helping the team win another national championship and set a school record with 4,601 rushing yards; HERO Sports named him a sophomoreAll-America selection.[2] The following year, Jensen started 10 games at left guard.[2]
In 2021, Jensen won his fourth national championship with the Bison while starting all 15 games, helping them have the second-best rushing offense in the FCS.[2][5] He opted to return for the 2022 season after all NCAA athletes were given an extra year of eligibility due to the COVID-19 pandemic.[2] He was named a first-team all-conference choice and a first-team FCS All-American after the season, in which he set what is thought to be the NCAA's all-time record for games played with 70.[3][6]