Jefri Yosafat Sinaga is a Senior Human Resources Officer at PT. Kapuas Prima Coal, Tbk. since January 2023, specializing in payroll reporting. Prior experience includes serving as Human Resources Staff at Daeah Engineering and Construction from June to December 2022, where responsibilities encompassed employee contract management, performance analysis, and recruitment support. Previously, Jefri held the position of Sales Supervisor at PT. Arta Boga Cemerlang (Orang Tua Group) from April 2021 to June 2022, achieving significant market share in the energy drink sector. Jefri also gained experience as a field mapping officer at Badan Pusat Statistik for a project in Denpasar in 2019. Academic credentials include a degree from Universitas Udayana and a high school diploma from SMAN 5 Medan.