This core77 article gives some valuable insight into what employers are looking for from design interviewees.
Here are a few of the highlights:
“One designer began by highlighting one of Smart Design’s company values. They proceeded by showing examples of how they did the same throughout various projects. It showed they understand what we do here.”
“Just show your best work; in this case, less is more. You’re better off leaving the interviewer impressed.”
“Self-edit by reviewing your portfolio page-by-page and ask why… If the page is weak, or doesn’t communicate something about you or your skills, omit it.”
“Speaking to each requirement the job posting outlines and how you meet those requirements, is a good way to show you’re prepared.”