If you currently have a juvenile criminal record that is not expunged or sealed you should take the time to petition the court to have it sealed or removed. In most cases across the country from state to state if you have your juvenile criminal record sealed then employers including the government (with the exception of police agencies and concessionaire licensing boards) will treat you the same as if you had never been convicted of that crime. You are even allowed to put “No Criminal Convictions” on your job application assuming that you have not committed any other crimes beside your juvenile criminal record.
It is important to note that if your juvenile criminal record is not sealed and available to the public eye and to background screening companies you must petition the court to seal your record. Chances are that if you have not become a repeat criminal offender and have completed whatever sentencing/punishment you where given the court will grant you your request and promptly seal your juvenile record.