SUPERVISING INVESTIGATOR - OIIG (ACTIVELY RECRUITED)

Cook County Government; Chicago (IL); On-site; USD 109,000 - 133,000; Full time

Job summary

The Office of the Independent Inspector General (OIIG) at Cook County Government is actively recruiting a Supervising Investigator. The role leads complex investigations of Cook County employees, officers and officials, including interviews, reporting, and recommendations to the Inspector General.

The position requires eight years of investigative or related experience or an advanced law degree with equivalent practice.

Qualifications

• Bachelor’s degree from an accredited college or university.
• Eight (8) years of full-time work experience conducting investigations involving criminal or fraudulent activity, audits, administrative violations, or other civil liability matters.
• Advanced degree in Law with eight (8) years of full-time work experience practicing law in civil or criminal litigation.

Responsibilities

• Conduct complex investigations into allegations of criminal and non-criminal conduct involving Cook County employees, officers, officials, and contractors.
• Perform interviews and prepare comprehensive confidential reports detailing investigations, findings and conclusions.
• Provide testimony in court or before administrative tribunals and liaise with prosecutorial officials regarding evidence and information.

Job description

Job Description - SUPERVISING INVESTIGATOR - OIIG (ACTIVELY RECRUITED) (00139708)

Job Description

SUPERVISING INVESTIGATOR - OIIG (ACTIVELY RECRUITED)

Requisition ID

00139708

Job Posting

Oct 19, 2026, 10:50:32 PM

Closing Date

Nov 3, 2026, 5:59:00 AM

Full-time Shift Start Time : 8:30 A.M. Shift End Time : 4:30 P.M.

Organization

Offices Under the President

Work Locations

Cook County Administration 69 W. Washington

Cook County Offices

Under The President

Administrative Hearings

Auditor

Bureau of Administration

Bureau of Economic Development

Bureau of Finance

Bureau of Human Resources

Bureau of Technology

Facilities

Office of the President

Job Summary

The Office of the Independent Inspector General (OIIG) was created to detect, deter and prevent corruption fraud, waste, mismanagement, unlawful political discrimination and misconduct in the operation of Cook County Government.Cook County, Ill., Ordinances 07-O-52 (2007). Serves as a lead Investigator.Performs complex investigations into allegations of criminal and non‑criminal conduct involving Cook County employees, officers and officials, and/or Cook County agents and contractors and other governmental agencies and employees.Conducts interviews, prepares comprehensive confidential reports detailing investigations, findings and conclusions and makes recommendations to the Inspector General and other senior level staff. Establishes and serves as a liaison between the Inspector General's Office and prosecutorial officials regarding evidence and/or information which support allegations of criminal improprieties leading to referral of cases. Provides testimony in court or before administrative tribunals. This position may also involve a concentration focusing on investigation, oversight, auditing and monitoring of government compliance with the terms of the orders entered in Shakman v. Cook County prohibiting unlawful political discrimination.

This position is Actively Recruited and at will.

Minimum Qualifications

• Graduation from an accredited college or university with a Bachelor’s degree.
• Eight (8) years of full-time work experience in the conduct of investigations involving criminal or fraudulent activity, audits, administrative violations or other matters of potential civil liability.

-OR-

• Graduation from an accredited college or university with an advanced degree in Law.

Eight (8) years of full-time work experience practicing law in the fields of civil or criminal litigation.

Knowledge, Skills, Abilities and Other Characteristics

Extensive knowledge of rules, regulations and operating procedures as they pertain to investigating reported incidents of improprieties at all levels of government. Extensive knowledge of applicable laws and regulations of state, local, and other authorities relative to cases of abuse, fraud, waste, and mismanagement as well as criminal and civil misconduct. Extensive knowledge of the rules of evidence relating to investigations and testimony. Knowledge of community resources and referrals with the ability to access such services on behalf of Cook County. Knowledge of modern supervisory practices with strong leadership skills. Skill in performing in‑depth, confidential, sensitive and complex investigations requiring document review and the conduct of interviews with complainants, witnesses, victims and other agency representatives. Skill and ability to elicit and organize facts and information from others. Skill in the use of Microsoft Office Suite with emphasis on Word and Excel. Ability to provide testimony in court in an accurate and informed manner. Ability to work independently and as part of a diverse investigative team on uncomplicated to complex matters.

Physical Requirements

Sedentary Work

Sedentary Work involves exerting up to 10 pounds of force occasionally or a negligible amount of force frequently to lift, carry, push, pull, or otherwise move objects. Sedentary work involves sitting most of the time but may involve walking or standing for brief periods of time.

The duties listed are not set forth for purposes of limiting the assignment of work. They are not to be construed as a complete list of the many duties normally to be performed under a job title or those to be performed temporarily outside an employee's normal line of work.

Group and Voluntary Benefits Offered

• Medical, Dental, and Vision
• Basic Term Life Insurance
• Pension Plan
• Deferred Compensation Program
• Employee Assistance Program
• Paid Holidays, Vacation, and Sick Time
• Voluntary Benefits
• You May Qualify for the Public Service Loan Forgiveness Program (PSLF)
• For eligible employees the County has a hybrid work environment which allows employees telecommuting and flexible scheduling options.

Salary Range

$120,675/Yearly

*This position requiressuccessful completion of post-offer tests, which may include a background check, drug screen and medical examination.

Falsification of any information in the application process will result in disqualification, dismissal after hire, and/or placement on the County’s Ineligible for Rehire List for a period of two (2) or five (5) years. For current County employees, such falsification may result in discipline, up to and including termination, and placement on the County’s Ineligible for Rehire List for a period of two (2) or five (5) years. See Cook County Code of Ordinances, Article II, Sections 44-54 Unlawful Practices Relating to Employees and Employment - Penalty, 44-56 Political Discrimination ; OIIG Employment Plan, Section V.N. Pre-Interview License and Certification Verification ; Supplemental Policy No. 2014-2.13 Ineligible for Rehire List ; and Cook County Personnel Rules 3.3(b) (7) (d).

EEO Statement

Cook County Government is an Equal Employment Opportunity (“EEO”) employer. Cook County prohibits illegal discrimination and harassment and affords equal employment opportunities to employees and applicants without regard to race, color, sex, age, religion, disability, national origin, ancestry, sexual orientation, marital status, parental status, source of income, housing status, military service or discharge status, gender identity, genetic information, or any other protected category established by law, statute or ordinance as further defined in Chapter 44. Human Resources, Article II. Personnel Polices, Section 44-53 of the Cook County Code of Ordinances and Chapter 42. Human Relations, Article II. Human Rights, Section 42-35 of the Cook County Code of Ordinances.

*Must be legally authorized to work in the United States without sponsorship.

Social Media Disclaimer

The County’s hiring process is governed by the Cook County Employment Plan which prohibits employment actions from being influenced by any Political Reasons or Factors for Non-Exempt Positions. The advertisement of this position by any individual does not constitute an offer or promise of employment, promotion, or any other employment action and shall not influence the County’s hiring decision. Cook County officials and employees who become aware of or receive a complaint that involves an allegation of Political Reasons or Factors being considered in the hiring process of Non-Exempt positions are obligated to refer the complaint to the Cook County - Office of the Inspector General. If the Cook County Inspector General sustains allegations of Political Reasons or Factors being considered, Cook County will disqualify the Applicant or Candidate from consideration for employment and disciplinary action will be imposed on any involved Cook County employees, if applicable.

COOK COUNTY IS AN EQUAL OPPORTUNITY EMPLOYER