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District Attorney Investigator II

Recruitment #0522-RL3022-TM


This examination is being given to fill one current part-time opportunity in the District Attorney's Office and to establish an eligible referral pool which may be used to fill future part-time opportunities. Resumes will not be accepted in lieu of an application. A completed application must be postmarked or received online by the final filing deadline.

NOTE: All correspondences relating to this recruitment will be delivered via e-mail. The e-mail account used will be the one provided on your employment application during time of submittal. Please be sure to check your e-mail often for updates. If you do not have an e-mail account on file, Human Resources will send you correspondences via US Mail.



  • Conducts investigations of civil and criminal matters such consumer and welfare fraud, misconduct of public officials, homicides, embezzlement, suspected violations of corporate security laws and mental health matters; conducts investigations requested by the Grand Jury; and investigates failure to provide cases.
  • Interviews and interrogates accused or suspected individuals and witnesses; examines court, police, public and governmental records needed for investigations; records and evaluates information obtained.
  • Inspects crime scenes to locate, identify, assemble, preserve, record and evaluate information.
  • Establishes and maintains contact with informants; gathers intelligence information concerning alleged criminal activities.
  • Assembles and prepares evidence for presentation in court; assists attorneys in court; gives testimony in court.
  • Analyzes and evaluates the results of investigations in light of recent court decisions; reviews reports of other law enforcement agencies to determine if all investigative avenues have been explored; detects defenses which may have been overlooked.
  • Makes oral and written reports.
  • Serves legal papers such as subpoenas, warrants and summonses; serves and executes extradition papers.
  • Assists in coordinating the investigative activities of the District Attorney's Office with local, state and federal law enforcement agencies.
  • Negotiates and arranges for repayment of fraudulently obtained funds.
  • As assigned, acts in mutual aid situations, which may include active law enforcement duties; makes arrests; works in an undercover capacity.
  • May supervise others.


    Experience:  One year of experience equivalent to a District Attorney Investigator I in San Joaquin County service.  

    OR II

    Experience:  Five years of experience as a peace officer in a public law enforcement agency including two years performing felony investigations in an investigative unit.


    Substitution:  Completion of 60 semester units in police science, criminology, sociology, psychology, or closely related curriculum may be substituted for the required general law enforcement experience on a year-for-year basis to a maximum of two years.


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


    Certificates:  Possession of an Intermediate P.O.S.T. Certificate (or proof of eligibility for such certificate) including or supplemented by successful completion of approved courses in Powers of Arrest and use of firearms in accordance with Penal Code Section 832.  Such courses must have been approved by the California Commission on Peace Officers Standards.


    Techniques, methods, and procedures used in crime detection and criminal investigations; rules of evidence, arrest and court procedures; interviewing techniques and procedures; civil and criminal laws and ordinances in effect in the County; techniques of securing, evaluating, and preparing evidence and exhibits for trial; search and seizure; service of legal papers; legal rights of citizens; firearms safety.


    Gather, assemble, analyze, and evaluate facts and evidence; interpret and apply applicable legal provisions; obtain information through interrogations and observations; draw logical conclusions and make proper recommendations; analyze situations and adopt effective courses of action; prepares comprehensive reports on investigations; learn to operate specialized investigative equipment; express oneself clearly and concisely, both orally and in writing; establish and maintain effective working relationships with other investigators, law enforcement officials, the public and others.


    Part-Time Employee Benefits: Part-time employees who meet the appropriate eligibility criteria may receive health insurance benefits and step increases.

    Selection Procedures

    Applicants for part-time and temporary recruitments who meet the minimum qualifications are either referred to the hiring department for further selection or they may be required to take a written examination.  If a written examination is given, the top candidates may be referred to the hiring department for further selection.

    Testing Accommodation:  Candidates who require testing accommodation under the Americans with Disabilities Act (ADA) must call Human Resources Division at (209) 468-3370 prior to the examination date. 

    Physical Exam:  Some classifications require physical examinations.  Final appointment cannot be made until the eligible has passed the physical examination.  The County pays for physical examinations administered in its medical facilities.

    Pre-employment Drug Screening Exam:  Some classifications require a new employee successfully pass a pre-employment drug screen as a condition of employment.  Final appointment cannot be made until the eligible has passed the drug screen.  The County pays for the initial drug screen.


    Employment of Relatives: Applicants who are relatives of employees in a department within the 3rd degree of relationship, (parent, child, grandparent, grandchild or sibling) either by blood or marriage, may not be appointed, promoted, transferred into or within the department when:

    • They are related to the Appointing Authority, or

    • The employment would result in one of them supervising the work of the other

    Department Heads may establish additional limitations on the hiring of relatives by departmental rule.

    Proof of Eligibility:  If you are offered a job, you will be required to provide proof of U.S. citizenship or other documents that establish your eligibility to be employed in the U.S.


    Apply Online:   

    By mail or in person:  

    San Joaquin County Human Resources

    44 N. San Joaquin Street Suite 330

    Stockton, CA 95202                                  


    Office hours:               
    Monday – Friday 8:00 am to 5:00 pm; excluding holidays.

    Phone:  (209) 468-3370 


    Job Line:

    For current employment opportunities please call our 24-hour job line at (209) 468-3377. 

    When a final filing date is indicated, applications must be filed with the Human Resources Division before 5:00 p.m. or postmarked by the final filing date. Resumes will not be accepted in lieu of an application. Applications sent through county inter-office mail, which are not received by the final filing date, will not be accepted. (The County assumes no responsibility for mailed applications which are not received by the Human Resources Division).  

    San Joaquin County Substance Abuse Policy: San Joaquin County has adopted a Substance Abuse Policy in compliance with the Federal Drug Free Workplace Act of 1988. This policy is enforced by all San Joaquin County Departments and applies to all San Joaquin County employees.

    Equal Opportunity Employer:  San Joaquin County is an Equal Employment Opportunity (EEO) Employer and is committed to providing equal employment to all without regard to age, ancestry, color, creed, marital status, medical condition, national origin, physical or mental disability, political affiliation or belief, pregnancy, race, religion, sex, or sexual orientation.  For more information go to

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    San Joaquin County
    Human Resources Division  Stockton, CA 95202
    E-mail | Phone: (209) 468-3370 | 8am - 5pm M-F | Powered by JobAps