Jamrichová and her partner Federica Urgesi won the 2023 Australian girls' doubles title, beating Hayu Kinoshita and Sara Saito in the final.

[8] In 2022, she won two gold medals at the European Youth Summer Olympic Festival (EYOF), winning in singles and mixed doubles.

[8] As the top seed in girls' singles at the 2024 Australian Open, she won the title, defeating Jones in the final.

She was the youngest player to represent Slovakia in the Billie Jean King Cup,[12] and recorded a win over Nadia Podoroska in straight sets.

[14] In November 2024, Jamrichová lost to Taylor Townsend in the opening singles match as Slovakia overcame the USA to qualify for the Billie Jean King Cup quarterfinals.