Placer County

Investigator - Supervising District Attorney (#13833)

$53.06-$66.26 Hourly / $9,197.07-$11,485.07 Monthly / $110,364.80-$137,820.80 Yearly


To plan, organize, direct and supervise the operation of the criminal investigation section of the Investigations Division within the District Attorney's Office; and to perform a variety of technical tasks relative to assigned area of responsibility.


The Supervisor level recognizes positions that perform full, first-line supervisory responsibilities including planning, assigning and evaluating the work of subordinates and is responsible for a program area within a work unit or department.


Receives general direction from the Chief District Attorney Investigator.

Exercises direct supervision over assigned technical and clerical personnel.


Duties may include, but are not limited to, the following:
  • Recommend and assist in the implementation of unit goals and objectives; establish schedules and methods for investigators; implement policies and procedures.
  • Plan, prioritize, assign, supervise and review the work of staff involved in the criminal investigations unit of the Investigations Division.
  • Evaluate operations and activities of assigned responsibilities; recommend improvements and modifications; prepare various reports on operations and activities.
  • Participate in budget preparation and administration; prepare cost estimates for budget recommendations; submit justifications for staff, material and supply needs; monitor and control expenditures.
  • Participate in the selection of staff; provide or coordinate staff training; conduct performance evaluations; recommend discipline; implement discipline procedures as directed.
  • Supervise investigative assignments; oversee work quality and effectiveness; review and evaluate case files and investigation reports for trial readiness; supervise major crime investigations.
  • Consult with the District Attorney and other attorneys concerning evidentiary matters and evaluation of witness testimony.
  • Confer with Local, State and Federal law enforcement agencies in regard to prosecution or investigative matters assigned to the Department; review and evaluate reports submitted by law enforcement agencies for criminal complaints.
  • Answer questions and provide information to the public; investigate complaints and recommend corrective action as necessary to gain resolution.
  • Build and maintain positive working relationships with co-workers, other County employees and the public using principles of good customer service.
  • Perform related duties as assigned.


Experience and Training
Any combination of experience and training that would provide the required knowledge and abilities is qualifying.  A typical way to obtain the required knowledge and abilities would be:

Experience: Four years of increasingly responsible experience in criminal investigative work, at least two years of which have been as a District Attorney's Investigator, including one year directly related lead or supervisory experience is desired.

Training: Equivalent to an Associate’s degree from a college with major course work in criminal justice, business or public administration, or a related field.

Required License or Certificate:

  • May need to possess a valid driver’s license as required by the position.  Proof of adequate vehicle insurance and medical clearance may also be required.
  • Possession of an advanced certificate issued by the California Peace Officer Standards and Training Commission (P.O.S.T.). Completion of the California P.O.S.T. Supervisory Course within 12 months after appointment.


Knowledge of:

  • Principles and practices of criminal law and criminal investigative procedures with particular reference to the apprehension, arrest and custody of persons committing misdemeanors and felonies.
  • Equipment, tools and materials used in criminal investigation.
  • Rules of evidence pertaining to the search, seizure and preservation of evidence.
  • Principles of supervision, training and performance evaluations.
  • Principles of budget monitoring.
  • Principles and practices of work safety related to investigative work.
  • Pertinent local, State and Federal laws, ordinances and rules, particularly those pertaining to investigation, prosecution and confinement of adult and juvenile offenders.
  • Organization, roles and responsibilities of a District Attorney's Office.
  • Legal structure and practices of criminal justice, especially the court system.
  • Use and care for small firearms and other law enforcement equipment and tools.
  • Offensive and defensive weapons nomenclature and theory; use and care of firearms, chemical agents, baton and other related law enforcement paraphernalia.
  • Principles and practices of self-defense.
  • Interviewing and interrogation techniques.

Ability to:

  • Organize, implement and direct the operations and activities of the criminal investigation unit.
  • On an intermittent basis, sit while working at desk or attending meetings; walk while supervising investigators; twist to access files or books; visual requirements necessary to view evidence; auditory requirements to listen to recordings of interviews.
  • On a continuous basis, know the laws, rules and policies impacting criminal investigations; remember case details; understand Departmental policies and procedures.  Intermittently, analyze statutes and case law; identify operational problems; interpret law; observe employee conduct and abilities; problem solve individual cases; explain work load requirements to staff.
  • Supervise, train and evaluate assigned staff.
  • Exercise good judgment and make sound decisions in the analysis of investigative problems; analyze complex cases; give assistance to Investigators.
  • Interpret and explain pertinent County and Department policies and procedures; assimilate changing law and technical advances in order to train and update Investigators.
  • Assist in the development and monitoring of an assigned program budget.
  • Develop and recommend policies and procedures related to assigned operations.
  • Demonstrate keen powers of observation and memory; observe accurately and remember faces, numbers, incidents and places.
  • Prepare and make presentations related to law enforcement efforts in the community.
  • Communicate clearly and concisely, both orally and in writing.
  • Work with various cultural and ethnic groups in a tactful and efficient manner.
  • Establish and maintain effective working relationships with those contacted in the course of work.

CLASS: 13833; EST: 9/1/1997; REV: 9/1/2003;