<em>This study aims to optimize human resources in improving employee performance at PT. Mitra Petra Sejahtera. The exploration strategy involved by the creator in this study is a subjective technique. It is possible to draw the conclusion that the training program is based on the annual evaluation results conducted by PT. Mitra Petra Sejahtera. The ability and quality of employee performance over the course of a year, as well as the requirement for employee training to support the employee's work, can be seen from this annual evaluation. Through on-the-job and off-the-job training, this method is used for training at PT. Mitra Petra Sejahtera. A method known as "on the job" involves employees receiving training through hands-on experience while working directly in their respective fields. At PT. Mitra Petra Sejahtera Partners, employee training is divided into several sections, including basic and advanced training. The number and quality of employees at PT. Mitra Petra Sejahtera have an impact on the career development process. Quality is an employee's achievement as measured by the work achieved by the employee. Meanwhile, the quantity factor can be seen from how long the employee has worked at PT. Mitra Petra Sejahtera. Furthermore, the second stage that is carried out is career development, where the leadership of PT. Mitra Petra Sejahtera has policies and directions for each department in the structure to have its own concept, which will then be implemented in that department, with the goal of giving each department new ideas for how it can grow. Thus, the career development process at PT. Mitra Petra Sejahtera is considered to be very effective in improving employee performance</em>