Taylor was selected by the Mariners in the 12th round of the 2022 MLB draft, this time signing with the team with a $125,000 signing bonus.[11][12] Taylor made his professional debut in April 2023 with the Single-AModesto Nuts. In August, he was promoted to the High-AEverett AquaSox.[3] In 40 appearances with the two affiliates, he had a 3.38 ERA with 62 strikeouts and 3 saves across 45+1⁄3 innings pitched.[12] He then played for the Peoria Javelinas in the Arizona Fall League, picking up 1 win and 1 save in nine appearances. He was selected for the 2023 Fall Stars Game.[13]
Taylor started 2024 back in Everett before being promoted to the Double-AArkansas Travelers in May.[14] He earned 21 saves in 40 minor league games, with a 3–4 record and 1.69 ERA in 42+2⁄3 innings.[12] On August 10, 2024, Taylor was selected to the 40-man roster and promoted to the major leagues.[15][16] Taylor made his MLB debut with the Mariners the next day, striking out two New York Mets batters and walking one in the ninth inning of a 12–1 win.[17][18][19] He gave up his first MLB home run to Javier Báez of the Detroit Tigers in his next appearance on August 13.[20] Taylor earned his first MLB save on September 27, recovering from allowing a leadoff double and throwing a wild pitch to recording three consecutive outs against the Oakland Athletics.[21][22] Taylor, pitching primarily as a reliever in the seventh inning, finished his first MLB season with a 3.72 ERA and 25 strikeouts in 19+1⁄3 innings.[18] Taylor's fastball averaged 97 miles per hour, which was in the top 10 percent of MLB pitchers. The spin on his fastball was in the top 15 percent of pitchers. His main secondary pitch was a sweeper, which was a slightly below average pitch, according to Statcast.[23]