While I don't think having a cert would help you get hired necessarily, it would probably influence a decision to get an interview. What really matters is if you know how to do real-world operational tasks with the knowledge, which will show up if your technical interviewers know k8s. If you are the first person they are hiring at the company to begin their k8s project, then you might have a real advantage with a cert.

Personally, I've never been one to give undue respect to many of the certs on the basis of having them alone, but it can depend on where you interview. Some places love certs.