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Criminal Investigator


Listing Summary

General Statement of Job

Under general supervision, the Criminal Investigator conducts investigations in a wide variety of criminal cases and performs related duties as required.  The Criminal Investigator is expected to obtain sufficient knowledge and proficiency to possess greater responsibility for conducting investigations and for exercising greater independent judgment.  Responds to serious crimes, collects evidence, secures scenes, and makes decisions in regards to court cases.  Performs surveillance details, processes evidence, interviews suspects, takes cases to trial, oversees other investigators, and reports outcomes to supervisors.

Specific Duties and Responsibilities

Essential Functions:

Performs pre-trial investigations and assists other investigators and prosecuting attorneys in court.

Traces and interviews witnesses, victims, and suspects in criminal cases and obtains statements, documents, and related evidence for use in court.

Carries out managerial responsibilities in accordance with S.O.P. and laws.

Coordinates back protocol functions.

Conducts investigations on a wide variety of felony and misdemeanor criminal cases.

Assists prosecuting attorneys in the preparation of evidence for trial by taking photographs and preparing diagrams and charts.  Prepares reports for use in the preparation and prosecution of criminal cases.

Provides security at public functions as needed.

Assists with administering the payroll each week.

Trains others in the performance of criminal investigations.

Prepares and serves search warrants and arrest warrants.

Types and prepares files for the District Attorney’s Office.

Testifies in court concerning evidence gathered in pre-trial investigations.

Makes arrests as necessary based on probable cause, bench warrants, and criminal complaints.

Operates police radios, personal and mainframe computers, photographic and recording equipment, GCIC terminals, and other related law enforcement equipment, as needed.

Qualification Requirements

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skills, and/or abilities required. Reasonable accommodations may be made to enable individuals with disabilities to perform the following essential functions:

  • Associate’s degree or equivalent from a two-year college or technical school and four years of experience which provides the required knowledge, skills, and abilities to perform the essential functions of the job.
  • Must be able to work variable hours.
  • Ability to serve as the field training officer.
  • Ability to use firearms, vehicles, flashlights, breathalyzers, audiovisual equipment, OC spray, Speed detectors, Fire extinguisher, handcuffs, barricades, measuring tape, radios, computers, flares, and fingerprint kits.
  • Requires a valid driver’s license, POST certification, POST Instructor Certification Radar Operator Certification, Criminal Investigator Certification, and Intoxilyzer Operator Certification.
  • Ability to gather, analyze, correlate, and evaluate observed facts and evidence.
  • Ability to interview or interrogate witnesses and suspects effectively.
  • Ability to accurately prepare investigative reports, read and comprehend legal material, and communicate effectively orally and in writing.
  • Ability to work effectively with a variety of individuals and with various levels of government, law enforcement, and judicial agencies.
  • Ability to work long hours including evenings and/or weekends.
  • Ability to use computers as an investigative resource.
  • Ability to prepare a variety of written documents such as affidavits, declarations, search and arrest warrants, and investigative reports; and effectively deal with hostile persons and effect arrests if necessary.
  • Ability to read and interpret documents such as safety rules, operation and maintenance instructions, procedure manuals, and so forth.
  • Ability to deal with problems and stressful situations involving several variables in changing situations.
  • Ability to follow oral and written instructions.
  • Ability to write routine reports and correspondence.
  • Ability to pass physical fitness and efficiency examinations.
  • Knowledge of the substantive and procedural Georgia criminal, juvenile, fraud, and support laws; techniques of interviewing; the use and care of firearms; laws of arrest, search, and seizure; rules of evidence; admissibility of confessions and witnesses’ statements; proper English construction and language usage; financial recordkeeping; and tracing and locating missing persons and assets.
  • Knowledge of Georgia Code and sections of other Georgia and city ordinance codes commonly used in investigations, such as Evidence; courtroom procedures; techniques of securing, evaluating, and preparing evidence and exhibits for trial; techniques, methods, skills, and procedures used in criminal investigations. 

Working Conditions and Physical Abilities

While performing the essential functions of this job, the incumbent is regularly required to sit; use hands to finger, handle, or feel objects; ascend and descend stairs, ladders, ramps, fences, scaffolding, etc.; maintain body equilibrium to prevent falling when walking, standing, crouching, or running on narrow, slippery or erratically moving surfaces; move about on hands and knees; bend body downward and forward, requiring full use of the lower extremities and back muscles; reach with hands and arms; speak and hear; use color, sound, shape and odor perception; and push, pull, and lift over 50 pounds frequently and over 100 pounds occasionally.

Work is performed in an office, police vehicle, and in the field exposing the employee to various outside atmospheric conditions; possible bodily injury from moving mechanical parts of equipment, tools, or machinery, electrical shock, explosions, and toxic or caustic chemicals. The employee is frequently exposed to persons who have contagious diseases and illnesses, volatile situations, and imminent danger when performing the essential functions of the job.

Working time may require irregular hours, shift times, and/or on-call status.

The incumbent’s working conditions are typically moderately quiet.

NOTICE: The above job profile does not include all essential and nonessential duties of this job. All employees with disabilities are encouraged to contact the Personnel Department to review and discuss the essential and nonessential functions of the job. An employee with a disability can evaluate the job in greater detail to determine if she/he can safely perform the essential function of this job with or without reasonable accommodation.

DISCLAIMER: Job profiles are not intended, nor should they be construed to be, an exhaustive list of all responsibilities, tasks, skills, efforts, working conditions, or similar behaviors, attributes or requirements associated with a job. A job profile is not a comprehensive job description. It is intended for the sole purpose of acquainting a person who is unfamiliar with such position with a brief overview of the position's general direction and scope. This position profile is confidential, is intended for internal use only and may not be copied or reproduced by anyone for any purpose without written permission from the Human Resources Director or the City Manager.

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