In this study, we explore the identity development of PhD graduates transitioning into non‐researcher roles. Through the conceptual lens of identity‐trajectory theory and based on interviews with 26 PhD graduates from three leading research universities in Hong Kong, Macau and Taiwan, we analyse their identity‐trajectory development after their transition to non‐research employment. The findings show that PhD graduates develop their identity trajectories based on their existing sense of researcher‐self through a variety of practices that involve intellectual, networking and institutional dimensions. Individual agency plays a key role in overcoming structural constraints in the workplace, yet its level varies according to one's willingness to pursue a non‐research career. The findings highlight the fluidity in identity development and the role of the researcher‐self as a positive legacy of doctoral training, including for PhD graduates taking non‐researcher roles.