Serious games for job interview are promising tools for training social skills of individuals. They can help job seekers to learn skills that may need during their interviews and to cope with stressful situations. Serious games have been used by organizations to increase the applicants’ engagement, to foster the recruitment process by proposing various automatic test scenarios and to predict the applicants’ job performance. However, most existing games did not considered the applicants’ personality and stress level to adapt the game experience. In fact, the personalization of the game can help to increase the applicants’ engagement and their training performance, which may enhance the recruitment process. In this paper, we suggest an adaptive serious game for training social skills in job interview. We conducted an experiment with young job seekers. The results of the experiment show that the game helped the participants to be more prepared to job interviews. Moreover, the behavior of the virtual character has influenced the performance and the perception of stress. In particular, subjects with low score of Conscientiousness and with high score of Neuroticism were more influenced by stressful situations. These results may open up further research perspectives related to the use of serious games to evaluate the stress level of individuals and personalize the training to their needs.