This research assessed the influence of motivation and career development on the performance of employees in UNAMI as a case study. The research included motivation factors, career development policies and job performance as well as motivation-performance interactions in UNAMI. The survey covered a systematic sample of 20 UNAMI staff respondents. The data were evaluated using descriptive and inferential statistical methods, obtained using a standardized questionnaire. The survey indicated that the firm employs several strategies to inspire its personnel. These include providing marginal benefits, payment of bonuses to individuals who make further efforts, a sense of responsibility, the advancement of industrious employees and the equitable treatment of workers. The research indicated that motivation is the main element affecting the performance of employees. This is because the majority of the respondents thought that motivation and career development are the major influence on employee success. The results also showed that motivation makes employees work more effectively and there is a direct and positive link between the motivation and career development of employees and the performance of UNAMI personnel