Anyone involved in hiring DevOps engineers would soon realize that it is hard to find prospective candidates who would have all the skills listed in the job description. Most of the experienced applicants would have deep knowledge of few tools and that might not make an exact match. Then you look for people with essential skills, with an intention to get them trained on-the-job. But what are those essentials skills?
For details, read my recent article on this topic, Essential DevOps Skills.