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Description Detail

Investigator I / District Attorney

Min Hourly Max Hourly Min Monthly Max Monthly Min Salary Max Salary
$11.60 $96.15 $2,010.63 $16,665.68 $24,118.00 $200,000.00


To conduct investigations on a variety of matters at the direction of the District Attorney and to provide responsible staff assistance.

This is the entry level class in the Investigator class series. Positions in this class will usually perform most of the duties required of the Investigator II but are not expected to function at the same skill level and usually exercise less independent direction and judgment on matters related to work procedures and methods. Work is usually supervised while in progress and fits a structured and established pattern. Generally, changes in procedure exceptions are explained in detail as they arise. Under the flexible staffing concept, positions assigned to the Investigator I class may reasonably expect to progress to the II level with training, experience, and satisfactory job performance.


The following statements are illustrative of the duties and responsibilities of the job. The organization retains the right to modify or change the duties and responsibilities of the job at any time.  

  • Receives general supervision progressing to direction as experience and training is gained.
  • Perform a variety of professional investigative work relative to cases brought before the District Attorney; make arrests of misdemeanor/felony suspects; testify in court.
  • Initiate necessary criminal actions under prescribed procedures. Interview witnesses, suspects, and concerned individuals; obtain statements, documents, and related factual information; gather, assemble, preserve, and report facts.
  • Identify, locate and properly handle physical evidence.
  • Make recommendations to attorneys as to the sufficiency of evidence to open formal investigations.
  • Perform the duties of a Juvenile Sexual Offender Case Tracking Officer by maintaining contact with juvenile offenders enrolled in the program and providing information regarding the progress of the offender in meeting the goals of the program.
  • Assist Deputy District Attorney's in insuring compliance with juvenile programs/probation by reissuing summonses and or taking juveniles into custody when not in compliance.
  • Assist in the preparation of cases for court and other legal proceedings.
  • Initiate and investigate criminal cases and prepare necessary charging documents.
  • Perform sensitive investigations at the direction of the District Attorney regarding a variety of matters including those related to elected officials and law enforcement agencies.
  • Locate witnesses and evidence for the court; evaluate the credibility of testimony and evidence; prepare diagrams and other visual aids for courtroom presentation.
  • Coordinate investigative activities with outside agencies; assist in countywide investigations.
  • Maintain investigative and statistical records.
  • Perform other duties as appropriate or necessary for performance of the job.

Knowledge, Skills, & Abilities:
Knowledge of:

  • Criminal and civil investigation techniques and procedures.
  • Principles of identification, preservation, and presentation of evidence.
  • Sources of information used in locating persons.
  • Rules of evidence and court procedures.
  • Applicable federal, state, and local laws and regulations.
  • Knowledge of guidelines related to the retrieval and sharing of criminal information.
  • Knowledge of standard police procedure regarding use of force and arrest control techniques.
  • Knowledge of firearm operations and terminology.

Ability to:

  • Analyze situations and adopt effective courses of action.
  • Obtain information and evidence by observation, review of documents, and interviews.
  • Interpret and apply laws and regulations.
  • Communicate clearly and concisely, both verbally and in writing.
  • Use and care for firearms.
  • Demonstrate keen powers of observation and memory.
  • Establish and maintain effective working relationships with other County employees, representatives of other agencies and organizations, and members of the community.
  • Maintain POST certification through attendance at mandatory training and firearms qualifications.


  • Four years of increasingly complex experience in law enforcement, including investigative responsibilities.
  • Equivalent to a Bachelor's degree from an accredited college or university with major course work in criminal justice, police science or a related field.
  • Possession of, or ability to obtain, an appropriate, valid Colorado driver's license.
  • P.O.S.T Certification Required.
Physical Requirements:
Must be able to:
  • Operate a variety of machinery and equipment such as computers, typewriters, facsimile machines, photocopiers, two-way radios, and motor vehicles.
  • Climb, reach, and/or stretch arms, legs, or other parts of body to grasp and move objects.
  • Walk, stand, and run, and may work may involve physical confrontations.
  • Be outside or inside in all types of weather.
  • Shoot accurately with one hand with a force of 6.5 - 8 lbs depending on the type of fire arm used.
  • Tolerate wearing a utility belt weighing 15 to 20 lbs for 6 hours.
  • Exert up to 50 pounds of force occasionally.
  • Compare and/or judge the readily observable, functional, structural, or composite characteristics (whether similar to or divergent from obvious standards) of data, people, or things.
  • Speak and/or signal people to convey or exchange information. Includes receiving instructions, assignments, and/or directions from supervisors.
  • Read a variety of correspondence, forms, reports, etc.
  • Prepare correspondence, reports, forms, etc., using prescribed formats and conforming to all rules of punctuation, grammar, dictation and style.
  • Speak to people with poise, voice control, and confidence.
  • Apply rational systems to solve practical problems and deal with a variety of concrete variables in situations where only limited standardization exist.
  • Interpret a variety of instructions furnished in written, oral, diagrammatic, or schedule form.
  • Record and deliver information, to explain procedures, to follow oral and written instructions.
  • Communicate effectively and efficiently in a variety of professional and technical languages including legal terminology.
  • Utilize mathematical formulas; add, subtract, multiply, and divid; and calculate decimals and percentages.
  • Inspect items for proper length, width, and shape.
  • Coordinate hands and eyes rapidly and accurately in using automated office equipment and motor vehicles.
  • Handle a variety of items, control knobs, switches, etc. Must have moderate levels of eye/hand/foot coordination.
  • Differentiate between colors and shades of color.
  • Deal with people beyond giving and receiving instructions.
  • adapt to performing under stress and when confronted with persons acting under stress.
  • Talk and hear: (Talking - expressing or exchanging ideas by means of spoken words. Hearing - perceiving nature of sounds by ear.)
  • Communicate via telephone.

Background Image: Changing Aspen Leaves in Rocky Mountain National Park by Jeremy Hollis. All rights reserved.