Rina Ratnasari is a Project Manager at Xtremax, where responsibilities include establishing and maintaining client relationships, managing project deliverables with a focus on quality and productivity, and overseeing day-to-day operations of maintenance projects. Previous roles at Xtremax include Associate Project Manager and Project Executive, involving close collaboration with development and engineering teams. Rina also served as a grader assistant in Radiodiagnostic and Basic Physics courses at Bandung Institute of Technology and supported physics laboratory activities at Institut Teknologi Bandung. Additionally, Rina completed an internship as a Medical Physicist, gaining hands-on experience in radiation calibration and treatment planning. Rina holds a Bachelor's degree in Physics from Institut Teknologi Bandung.