Work Visa 技術・人文知識・国際業務 Changing Jobs

Hi everyone. I’d like to ask about work visa. Previously, I am a Japanese language student, graduated and now work in a hotel. This is my first job.
I got 3 years duration, expiring march 2027. Next April, will be my 2nd year working.

I also now searching for a new job (overseas sales) (海外営業).

I want to ask if I got the new job. The work visa is not bound by my company but it is bound by myself. Meaning, the company that I’m working right now can not revoke/try to cancel my employment.

Another one is, if I am working in the new job, should I inform immigration if I chance jobs?

Thank you for taking the time to read and responding!

by kuahbakmi