The study investigated the influence of personality traits on career satisfaction and job performance of electrical/electronic technology education lecturers in tertiary institutions in Nigeria. The study covered 10 tertiary institutions (Colleges of education and Universities) in South-West, Nigeria offering electrical/electronic technology education. The data were collected using structured questionnaire. One hundred and sixty-nine electrical/electronic technology education lecturers in 10 tertiary institutions in six states of Nigeria participated in the study. The data collected were analysed using Pearson product-moment correlation coefficient, standard multiple regression and one-way ANOVA. The study revealed that extraversion, openness to experience, neuroticism, conscientiousness and agreeableness were significant predictor of career satisfaction. Study established that extraversion, openness to experience, neuroticism, conscientiousness and agreeableness were significant predictor of job performance. Furthermore, this study found that demographic profiles (gender, years of teaching experience, ranking and qualification) influence personality traits, career satisfaction and job performance of electrical/electronic technology education lecturers in tertiary institutions.