Will my DUI prevent me from a job with an ambulance company?

After you complete your probation you can seek relief under Penal Code section 1203.4. With a DUI it is discretionary as to whether or not to grant the "expungement." But, it will not truly go away, that is, be wiped off your record. It is really up to the ambulance company as to whether or not they will hire you. Consult with a criminal defense attorney, and the ambulance company as to what else you can do.

Will my DUI prevent me from a job? Probably. Ask them. Their insurance requirements are an issue. Some CA convictions can be 'expunged' from criminal records by proper application and Petition to the court, but ONLY IF there was no felony prison time sentenced whether served or not, and if it was not for certain listed sexual crimes, and if all terms of sentencing and at least one year of probation are completed, and if there are no new charges pending. Sounds like yours may qualify. If successful, the conviction would be withdrawn and the charges dismissed. Expungement does NOT clear, 'remove' or erase the conviction, but does change the record to show 'conviction reversed and dismissed by expungement'. It doesn't disappear. The conviction is still a 'prior' or 'strike' for purposes of repeat offense. It still shows on your record that is accessible to government agencies, law enforcement, courts, background checks, etc. Expungement will help in obtaining and keeping employment. When applying for a job in the private sector, in response to any question concerning your prior criminal record, you may deny that you were arrested or convicted of the offense. However, you must disclose the arrest and conviction in any questionnaire or application for licensing by any state or local agency, for public office, for a position as a peace officer, for contracting with the California State Lottery, or for purposes of serving on a jury.

Unfortunately, there is no way to remove something from your record in California. What people call an "expungement" doesn't take anything off your record - it just adds a notation that it was subsequently dismissed. Even that dismissal won't take it off your DMV history - it stays there for 10 years. I would suggest you consult with a licensing attorney (I know a couple in the LA/OC area if you need a referral) to see what can be done in order to improve you chances with the licensing boards.

Once you finish probation, you can do an expungement if you don't have anything else going on. Contact an attorney about filing the petition for you. You won't be eligible until September of 2012.