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The County of DuPage
Wheaton, Illinois

Job Details for 2236 - EO Deputy Sheriff Detective

Job Description


GRADE: Metropolitan Alliance of Police Contract

Under direction; performs work of considerable difficulty conducting specialized investigations of criminal offenses; performs related work as required.

Employees in this class perform plain clothes police duty requiring considerable discretion and the application of specialized knowledge and skills in the investigation and detection of crime.  They investigate cases to conclusion and prepare case for prosecution.  This work is distinguished from other police personnel who make preliminary investigation sat the scene. 

The list of duties and responsibilities is illustrative only, and is not a comprehensive listing of all the duties and responsibilities performed by positions in this class.

• Conducts burglary, theft, bomb, arson, homicide, narcotics, assault and missing persons investigations
• Investigates youth related offenses
• Investigates vice and liquor violations, including raids and apprehending violators
• Visits the scenes of crimes, searches for and preserves evidence, investigates and follows up clues, and searches for and apprehends violators
• Interviews suspects, prisoners, complainants and witnesses to obtain information regarding crimes
• Checks pawnshops, second-hand stores and junk yards for stolen property
• Appears in court to present evidence and testify against individuals accused of crimes
• Maintains surveillance of known agitators, suspected narcotic agents, and suspected criminals
• Executes search warrants and arrest warrants
• Extradites prisoners form other cities and jurisdictions
• Transports prisoners from the County jail to other locations
• Maintains records and prepares reports
• May serve as acting supervisor as required
• Uses squad car, weapons and typewriter.
• Maintains regular attendance and punctuality

• Adjusts work assignments and schedules in the event of an emergency to participate in emergency preparedness, response, and recovery activities as assigned.
• Depending on assignment may maintain required emergency management training, licensure and/or certifications.
• Performs related duties as required or assigned within job classification.

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, skill, and /or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.

Knowledge of:
• Principles, methods, techniques and practices of criminal investigation and identification
• Police rules and regulations
• Geography of the County.
• Current office practices, procedures and equipment
• County policies and procedures
• Applicable federal, state, and local laws, rules, regulations, codes, and/or statutes

Skill in:
• Observing fact situations analytically and objectively
• Recalling names, faces and details
• Communicating with individuals firmly, courteously and tactfully
• Use of good judgment in evaluating situations and making decisions
• Verbal and/or written communications
• Understanding and executing difficult verbal and written instructions.
• Using computer hardware and software including word processing, spreadsheets, databases, email, etc
• Applying an acquired knowledge of procedures, rules, regulations and services applicable to the assigned office

Ability to:
• Manage projects and multiple priorities simultaneously
• Establish and maintain effective working relationships with department and division staff, other departments and others, such as vendors
• Communicate and use interpersonal skills to interact with coworkers, supervisor, the general public, etc. to sufficiently exchange or convey information and to receive work direction
• Ensure compliance with applicable federal, state, and local laws, rules, and regulations and statutory requirements
• Convey excellent oral and written communication
• Work effectively under stress
• Maintain confidentiality


Completion of a High School Diploma or General Equivalency Diploma equivalent; Three years of experience as a law enforcement officer and completion of two approved training coursed in crime detection and criminal investigation or, an equivalent combination of education and experience sufficient to successfully perform the essential duties of the job such as those listed above.

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Very Heavy Work: Exerting up to 100 pounds of force occasionally, and/or up to 50 pounds of force frequently, and/or up to 20 pounds of force constantly to move objects. Specific vision abilities required by this job include close vision, distance vision, color vision, peripheral vision, depth perception, and ability to adjust focus. The employee is required to maintain a level of physical fitness to meet department standards. Correct visual acuity to 20/20.

The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

The work will occur in an office and field environment. While performing the duties and responsibilities the employee maybe exposed to loud noise, noxious odors, unsanitary conditions, chemicals, electricity, moving mechanical parts, varying weather conditions, and other related conditions and situations. Position is subject to atmospheric conditions: Fumes, odors, dust, mists, gases or poor ventilation.

This position requires a valid Illinois driver's license.