Except as otherwise provided by law for a juvenile found guilty of a felony in circuit court whose case is disposed of in the same manner as an adult criminal case, a finding of guilty on a petition charging delinquency under the provisions of this law shall not operate to impose any of the civil disabilities ordinarily imposed by conviction for a crime, nor shall any such finding operate to disqualify the child for employment by any state or local governmental agency. Nothing in this section shall prohibit the State Police or a police department or sheriff’s office that is a part of or administered by the Commonwealth or any political subdivision thereof from denying employment to a person who had been adjudicated delinquent where such denial is based on the nature and gravity of the offense, the time since adjudication, the time since completion of any sentence, and the nature of the job sought.