DUIs remain on your driving record in the Department of Motor Vehicles (DMV) for ten years. The ten-year clock starts ticking on the day of his arrest. After the ten years have passed, the DUI will no longer appear on your driving record. In California, a DUI stays on your driving record with the DMV for 10 years.
Law enforcement officers can view this record as well as inside the DMV. The DMV uses it to make decisions about your driver's license, for example, if you are eligible to reinstate a suspended license. You cannot remove a DUI from your driving record in California. After 10 years, it will be deleted from your registry.
Until then, it could show up in background checks if your employer decides to check your driving record and criminal record.