The Orioles selected Harvey with the 22nd pick in the first round of the 2013 MLB draft, and he made his major league debut with the team in 2019.

Harvey attended Bandys High School in Catawba, North Carolina.

[6] He spent the season with the Delmarva Shorebirds of the Single-A South Atlantic League[7] where at 19 years of age he pitched to a 7–5 record and 3.18 ERA in 17 starts covering 87.2 innings.

[14] However, he did not make his major league debut and was optioned back to Bowie two days later, and spent the remainder of the year there.

[16] He made his major league debut that night versus the Boston Red Sox, striking out two batters over one scoreless inning.

[23] He was designated for assignment on March 14, 2022, to create room on the roster for free agent signing Jakob Junis.

[24] Harvey was placed on the injured list on April 21 with a right forearm strain, later being transferred to the 60-day IL on June 14.

[26] On July 13, 2024, Harvey was traded to the Kansas City Royals in exchange for minor league prospect Cayden Wallace and a Competitive Balance Round A pick in the 2024 Major League Baseball draft.