In CA, about 3 years ago I was given a ticket for a misdemeanor offense. I had to show up in court and had a public defender. I pled no contest per the public defender. I was offered 6 months informal probation, community service. Completed. The case was dismissed. Now I am applying for a bank job. How will this come up on a background check? Thanks.

First and only offense*****

It depends on what the bank looks for. It may show up as a misdemeanor conviction or a dismissed misdemeanor or not show at all. You do need to mention it to your interviewer.