Oliver missed his junior year at Grant Union High School due to an ACL injury, before averaging 21.5 points and ten rebounds as a senior.

[citation needed] Coming out of high school, he committed to Oregon State, but de-committed after a coaching change and eventually sat out the 2014–15 season.

[1] He joined the Nevada Wolf Pack for the 2015–16 season, where he enjoyed an outstanding freshman year, averaging 13.4 points, 9.1 rebounds and 2.6 blocked shots a game.

Oliver was a key part of a Wolf Pack squad that won the College Basketball Invitational that year.

[citation needed] In 2016–17, Oliver saw the floor in 35 games to average 16.0 points, 8.7 rebounds, 2.6 blocks and 1.8 assists per outing, guiding Nevada to a 28–7 record and the MW Tournament Championship title.

[9] On January 26, 2018, Oliver was traded, alongside Shannon Brown, to the Delaware 87ers in exchange for James Blackmon Jr. and the returning player rights to Russ Smith.

[11] After a training camp stint with the Portland Trail Blazers,[12][13] Oliver re-joined the Delaware Blue Coats for the 2018–19 season.

[24] In August 2021, Oliver joined the Golden State Warriors for the 2021 NBA Summer League[25] and on September 29, he signed an Exhibit 10 contract with the Los Angeles Lakers.