A résumé is a bit like a profile picture. It needs to be recognizable while being the best, most current representation. This living document will need to change about once a year. Typically, we look at a résumé only when applying for another job. We may simply glance at the dates, the contact information and send it on. However, to really get another job, it deserves a deeper dive.
The #1 goal of a résumé is to get an interview. The goal of the interview is to be offered the job. Imagine the manager who will read the résumé with an eye to the open position. What skill or responsibility is the team missing? How will a new person fit into the culture of the workplace? Answers to these questions are hinted at in a job description, which should include skills needed, responsibilities to be assumed and information about the work environment.