Will my DUI (first offense) affect my job application in different state?

Do not volunteer any information. Most employers are limited to inquiring only about convictions, not arrests. If you do receive court supervision, that is not a conviction and you can honestly answer "no" if you are asked about ever having been convicted of a crime. There are other ways, however, that an employer might find the DUI arrest without you offering that info: If the job requires driving or use of company vehicles they will probably obtain your driving record. If, for example, you were suspended for refusing/failing a breath test, that information is public record until the suspension ends. Make sure you pay your reinstatement fee as soon as possible; otherwise that suspension will remain open and anyone checking your record will know that you were arrested for DUI.