Rajecki began playing for the Wolfpack at North Carolina State University in 2020–21.[3] In her junior year in 2022–23, she set the program record of singles wins in a season with 40 wins and 11 losses.[3] She helped NC State win its first ACC title with a win over Carson Tanguilig of North Carolina.[4] At the 2023 NCAA Championships, where NC State lost to North Carolina in the team final, Rajecki beat No. 1 seed, Fiona Crawley of North Carolina, in the singles event, with her victories enough to secure All-American honours for herself.[5]