Yes, candidates can leverage prior public service experience when preparing for the UPSC. This experience offers unique insights into governance, public policy, and community needs, enriching their understanding of civil services. Drawing upon real-life scenarios can help candidates relate theoretical concepts to practical applications. In interviews, discussing prior service showcases a candidate's commitment to public welfare and their capacity to handle responsibilities. Moreover, familiarity with administrative processes equips aspirants to navigate the civil service landscape more effectively. Ultimately, this background adds significant value to their preparation and enhances their profile as prospective civil servants.