District Attorney Investigative Assistant I (#RL3011)
$23.13-$28.11 Hourly / $4,008.71-$4,872.61 Monthly / $48,104.52-$58,471.35 Yearly


Under general supervision, performs routine technical and investigative work in support of the District Attorney's Office; and does related or other work as required in accordance with Rule 3, Section 3 of the Civil Service Rules.


This is the first level in the Investigative Assistant series. An employee of this class is responsible for locating witnesses, serving subpoenas for witnesses in criminal cases and for learning other routine aspects of investigations. Incumbents may be required to work irregular shifts.

This class is distinguished from the District Attorney Investigator series in that incumbents perform simple or routine investigative duties, and learn to assist in more complex investigations that do not require sworn peace officer status. Experience in this class does not meet the experience requirements for the District Attorney Investigator series.


  • Locates witnesses using a variety of methods; serves subpoenas for appearance in court as a State's witness; coordinates transportation of witnesses.
  • Interviews employers, families, neighbors and others to secure information regarding the location of witnesses.
  • Testifies in court as to measures taken to locate witnesses; gives evidence that witnesses are not available; maintains contact with prosecuting attorneys during court sessions in order to serve subpoenas for additional witnesses and locate and bring witnesses to court.
  • Maintains records of subpoenas served and reports of activities and workload.
  • Delivers evidence to laboratories; transports documents and other items; maintains chain of custody.
  • Photographs crime scenes; prepares crime scene diagrams; assists attorneys in preparation of exhibits.
  • Assists District Attorney investigators in the investigation of less complex criminal cases; participates in other non-peace officer functions of the Investigative Unit.



Experience: One year of law enforcement, investigative, or related work.



Education: Completion of 60 semester units from an accredited college or university with emphasis in administration of justice, social or behavioral science, public or business administration, or related field.


Experience: Either 1) One year experience of process serving, or collections work, which required the locating, and interviewing of individuals; or 2) Two years legal clerical experience including preparation of legal documents.


Substitution: Additional qualifying experience may substitute for the education on a year for year basis.



License:  Possession of a valid California driver’s license.


Basic interviewing techniques; human behavior; sources of information used in locating persons; general legal procedures and terminology relating to criminal investigations.


Learn, interpret, and apply provisions of the laws applicable to criminal investigations; obtain, analyze and evaluate statements and other information; read and interpret job related materials; evaluate situations and people accurately and adopt effective courses of action; communicate effectively, orally and in writing; establish effective working relationships with others.


Mobility-Ability to sit or stand for long periods, move about an office, perform field work; reach above and below desk level; Dexterity-Sufficient to operate a key board; handle individual papers; write and take notes; Lifting-Occasional lifting of papers, files, equipment and material weighing up to 25 pounds; Visual Requirements-Ability read case files and computer screens and do close-up work; Hearing/Talking-Ability to hear normal and faint speech, hear on the telephone and radio, talk in person, and talk on the telephone and radio; Emotional/Psychological Factors-Exposed to trauma and grief; exposure to hostile individuals; frequent public contact; ability to make decisions and concentrate, ability to work nights and overtime.

San Joaquin County complies with the Americans with Disabilities Act (ADA) and, upon request, will consider reasonable accommodations to enable individuals with disabilities to perform essential job functions.

CLASS: RL3011; EST: 4/9/1986; REV: 6/13/2001;