[6] She reached a career-high ranking of world number 1 in the women's doubles with Chen Qingchen in November 2017.

In 2023, Jia and Chen Qingchen helped the national team reach the final of the Sudirman Cup by winning the deciding rubber, beating fellow former world no.

[8] In August, Jia and Chen won the World Championships title by beating Apriyani Rahayu and Siti Fadia Silva Ramadhanti in the final.

[9] In October, they won the Denmark Open, becoming the first Chinese women's doubles pair to defend the title.

[10] At the 2024 Summer Olympics, with partner Chen Qingchen, Jia won gold in the women's doubles event, defeating compatriots Liu Shengshu and Tan Ning 2–0 in the finals.