Legal Question in Employment Law in California

Most employers, but not all, cannot deny employed based on an arrest that does not result in a conviction. This does not apply to jobs that require a special license or security clearance.

Yes it will show on your 'permanent' record. While Mr. Kirschbaum is technically correct, no employer is going to be so stupid as to admit they rejected you for this reason. Many will reject you and you would never be able to prove why. With a pending offer, you are probably less likely to lose this offer. because they would have to tell you 'something' to justify the change. .