Job Description

Job Requisition ID: 48638 
Closing Date: 10/15/2025
Agency:  Department of Corrections
Class Title:  INTERNAL SECURITY INV II - 21732 
Skill Option:  None 
Bilingual Option:  None
Salary: Anticipated Starting Salary Range: $7,567 - $9,000/ Month
Job Type: Salaried
Category:  Full Time 
County: Will
Number of Vacancies: 1
Bargaining Unit Code:  None
Merit Comp Code:  Confidential Exclusion from RC090 Collective Bargaining Coverage

A resume is highly encouraged to evaluate your qualifications and skills as part of your application. Please attach a DETAILED Resume/Curriculum Vitae (CV) to the MY DOCUMENTS section of your application if you decide to provide one.

Why Work for Illinois?

Working with the State of Illinois is a testament to the values of compassion, equity, and dedication that define our state. Whether you’re helping to improve schools, protect our natural resources, or support families in need, you’re part of something bigger—something that touches the lives of every person who calls Illinois home.

No matter what state career you’re looking for, we offer jobs that fit your life and your schedule—flexible jobs that provide the gold standard of benefits. Our employees can take advantage of various avenues to advance their careers and realize their dreams. Our top-tier benefits and great retirement packages can help you build a rewarding career and lasting future with the State of Illinois.

Position Overview

The Internal Security Investigator position serves as a lead investigator of incidents and complaints of administrative and criminal nature for various areas and agencies. This covers all facilities and their satellite facilities, along with juvenile facilities, and parole offices. The ideal candidate should be able to interview individuals in custody, employees, and management staff to solve and gather facts to conclude cases in a timely manner. We encourage all qualified individuals to apply.

Essential Functions

• Conducts/participates in complex sensitive investigations relating to criminal activities of individuals in custody/staff.
• Works with staff assisting in investigations.
• Testifies in court in criminal/civil proceedings as an expert witness.
• Serves as a full line supervisor.
• Conducts random/routine drug and alcohol testing of all individuals in custody, prospective employees, volunteers of Department of Corrections.
• Uses microcomputer and the programs contained therein to gather data for the purpose of formulating reports, responding to internal and external queries and to effectively communicate policy and procedural practice and changes to affected staff.
• Serves on Command Post as Intelligence Coordinator.
• Performs other duties as required or assigned which are reasonably within the scope of the duties enumerated above.

Minimum Qualifications

• Requires knowledge, skill, and mental development equivalent to completion of two (2) years of college, with coursework in law, government, liberal arts, history or business or public administration, plus four (4) years professional experience in law enforcement investigatory work or a related field.
  OR
  Requires knowledge, skill, and mental development equivalent to completion of four (4) years college, with major coursework in law, government, liberal arts, history or business or public administration, plus two (2) years professional experience in law enforcement investigatory work or a related field.
  OR
  Requires knowledge, skill, and mental development equivalent to completion of a master's degree, with major course work in law, government, liberal arts, history or business or public administration plus one (1) year professional experience in law enforcement investigatory work or a related field.
  OR
  Requires completion of the F.B.I. National Academy or comparable law enforcement schooling, plus two (2) years of professional experience in law enforcement investigatory work or a related field.

Preferred Qualifications

• Prefers at least three (3) years of experience conducting investigations, including interviewing persons, gathering, and compiling pertinent investigative/information data.
• Prefers at least three (3) years of experience recognizing and gathering appropriate statements, exhibits and materials acceptable for use in prosecution of cases or disciplinary actions.
• Prefers at least three (3) years of experience working in a correctional setting.
• Prefers at least three (3) experience preparing case reports for referral (submitted to States Attorney or facility administrator).
• Prefers at least three (3) years of experience interpreting and applying State statutes, rules and regulations concerning conflict of interest of malfeasance of office.
• Prefers at least three (3) years of experience in the processing of crime scenes and the identification, collection, and handling of evidence.
• Prefers at least one (1) year of experience submitting cases and testifying in court.
• Prefers experience using Microsoft Word, Excel, and Outlook, or similar software.

Conditions of Employment

• Requires possession of an active Firearm Owners Identification (FOID) card and must maintain active status while in the position.
• Requires ability to qualify with firearms prior to the completion of the initial pre-service training curriculum and annually thereafter in accordance with agency directive and state or federal laws.
• Requires ability to pass the IDOC/IDJJ background check.
• Requires ability to pass a drug screen. The use of unauthorized drugs by an employee, regardless of the position held, is prohibited.
• Applicants are required to abide by all vaccine and/or other medical standards as set out by the employer.
• Required to utilize digital technology, tools, platforms, and processes in managing and supporting various digital enhancements for greater efficiency, productivity, and digital transformation efforts within the department.
• The conditions of employment listed here are incorporated and related to any of the job duties as listed in the job description.

Work Hours: Monday - Friday 8:00am - 4:00pm; Saturday/Sunday off 
Work Location:  16830 S. Broadway Crest Hill, IL 60403 
Agency Contact:  Demetria.Greenwald@illinois.gov
Posting Group: Legal, Audit & Compliance; Public Safety

About the Agency:  The Illinois Department of Corrections is a multicultural agency deeply committed to ensuring diversity, equity, and inclusion. This commitment is at the forefront of our operations, hiring, policies and procedures, and training. We recognize the benefit of workplace empowerment, the importance of diversity and fully support an environment where ALL employees are treated fairly, respectfully, and have equal access to opportunities and resources necessary to thrive and contribute to the agency's success. IDOC genuinely values the differences of individuals in our custody and is committed to ensuring a healthy living environment where they feel valued, respected, and included.
Through our commitment to Diversity, Equity, and Inclusion (DEi), we shall establish and uphold agency policies and practices conducive to eliminating all forms of exclusion including, but not limited to, racism, ageism, ableism, sexism, discrimination based on sexual orientation and gender, and religious oppression. The IDOC team works to serve justice in Illinois and increase public safety by promoting positive change in behavior of individuals in custody, operating successful reentry programs, and reducing victimization. Employees enjoy excellent benefits, including health, vision, and dental insurance; retirement plan and deferred compensation; state holidays and other benefit time off, and pre-tax benefit programs. The department also offers extensive training and career advancement opportunities. The Illinois Department of Corrections is proud to be an Equal Opportunity Employer.

As an IDOC employee, you are entitled to a robust benefits package that includes:

· Health, life, vision, and dental insurance 

· 12 weeks paid maternity/paternity leave 

· Pension Plan – vesting at 10 years for Tier II 

· Full 20‐year retirement awards free health insurance during retirement.
· Deferred compensation and other pre‐tax benefits programs
· Paid state holidays 13‐14 days annually 

· 3 Paid Personal Business Days annually 

· 12 Paid Sick Days annually (Sick days carry over from year to year)
· 10‐25 Days of Paid Vacation time annually ‐ (10 days in year one of employment)
· Personal, sick, and vacation rates modified for 12‐hour work schedules. (As applicable.) 

· Employee Assistance Program and/or mental health resources
· For more information about our benefits please follow this link:

The main form of communication will be through email. Please check your “junk mail”, “spam”, or “other” folder for communication(s) regarding any submitted application(s). You may receive emails from the following addresses:

• donotreply@SIL-P1.ns2cloud.com
• systems@SIL-P1.ns2cloud.com

Job Tags

Similar Jobs