在任 + Role/Title
任 means 'to serve as' or 'to hold the position of,' used to indicate that someone occupies an official role. It is a formal verb common in political, corporate, and institutional contexts, and often appears with 在任 (currently serving) or 现任 (incumbent).
她现任公司副总裁,负责国际业务。
Tā xiànrèn gōngsī fù zǒngcái, fùzé guójì yèwù.
She currently serves as the company's vice president, in charge of international business.
他曾任北京大学的客座教授。
Tā céng rèn Běijīng Dàxué de kèzuò jiàoshòu.
He once served as a visiting professor at Peking University.
张先生在任期间推动了多项重要改革。
Zhāng xiānshēng zài rèn qījiān tuīdòng le duō xiàng zhòngyào gǎigé.
During Mr. Zhang's tenure, he promoted several important reforms.