By the viewpoint of job demand-resource model, the purpose of study is to discover job crafting influence job performance by engaging to the work and the feedback seeking behavior of employees moderates the medication effect of work engagement. The study hypothesized that employees would imitate each dimension of job crafting behaviors, and therefore influence their job performance by engaging to the work. Also the feedback seeking behavior of employees moderated the relationship between work engagement and job performance. We collected data from 553 employees and their supervisors regarding employees’ job performance. Results showed work engagement mediated between each dimension of job crafting and job performance. High feedback seeking behavior strengthened the mediation effect of work engagement. We conclude that feedback seeking behavior has important implications for the job crafting, working engagement, job performance and discuss the practical implications of these findings.