40 security and it jobs are open in Illinois, on employers' own career pages, from 22 employers. The three employers with the most openings are Charles River Associates, Leidos, Air National Guard Units and Department of the Air Force, with 16 of the 40. 73 percent of these postings list a pay range. The middle half of listed pay runs from $98,617 to $136,833, with a median of $113,250. The places with the most are Boston, MA (9); Chicago, IL (6); Shiloh, IL (5). A typical posting has been open 21 days.
Illinois requires employers to list a pay range in many postings, so the pay figures here come from the employers' own ranges.
Applications here go through USAJOBS (42%), Workday (31%), Greenhouse (22%), iCIMS (4%).
Open security and it jobs
Leidos
Shiloh, IL · Posted Oct 15
Network Engineer III
Seen todayNew this week
This position directly supports the DISA-provided GIG capabilities and services in the 24x7 DISA Global Operations Center (DGOC).
Leidos
Shiloh, IL · Posted Oct 15
Security Operations Center (SOC) Analyst
Seen todayNew this week
We are seeking, proactive defenders for a critical role safeguarding the nation's most sensitive digital landscapes.
Leidos
Shiloh, IL · Posted Oct 15
Network Engineer I
Seen todayNew this week
This position directly supports the DISA-provided GIG capabilities and services in the 24x7 DISA Global Operations Center (DGOC).
Leidos
Shiloh, IL · Posted Oct 15
Network Engineer II
Seen todayNew this week
This position directly supports the DISA-provided GIG capabilities and services in the 24x7 DISA Global Operations Center (DGOC).
Leidos
Shiloh, IL · Posted Sep 17
Implementations/Activations Network Engineer II
Seen today
This position directly supports the DISA-provided capabilities and services.
Security and IT jobs by place in Illinois
| Place | Open jobs |
|---|---|
| Boston, MA | 9 |
| Chicago, IL | 6 |
| Shiloh, IL | 5 |
| Scott AFB, IL | 3 |
| Anchorage, AK | 2 |
| Gunter AFB, AL | 2 |
| Lincolnshire, IL | 2 |
| Phoenix, AZ | 2 |
| Salt Lake City, UT | 2 |
| Aliceville, AL | 1 |
| Des Moines, IA | 1 |
| Downers Grove, IL | 1 |
| Freeport, IL | 1 |
| Hines, IL | 1 |
| Huntsville, AL | 1 |
Who is hiring security and it in Illinois
| Employer | Open jobs | Typical posted pay |
|---|---|---|
| Charles River Associates | 9 | $113,250 |
| Leidos | 5 | |
| Air National Guard Units, Department of the Air Force | 2 | |
| Defense Counterintelligence and Security Agency, Department of Defense | 2 | |
| Deputy Assistant Secretary for Information and Technology, Department of Veterans Affairs | 2 | |
| Liberty Mutual | 2 | |
| Mercy Health | 2 | |
| Zebra Technologies | 2 |
Counts are open postings on each employer's own career page. Staffing firms and job boards are left out.
How to apply
- Open the job from the list and read the requirements and the pay line.
- Check what the posting asks you to bring (resume, cover letter, questions).
- Apply on the employer's site.
- Keep a note of where you applied.
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How many security and it jobs are open in Illinois?
40 on Oct 18, 2026, from 22 employers, read from employers' own career pages. The number changes as employers post and close roles.
Where in Illinois are most security and it jobs?
Boston, MA (9); Chicago, IL (6); Shiloh, IL (5).
Do security and it jobs in Illinois pay more than the US?
The median listed pay here is $113,250; across the US it is $152,550. Both come from postings that state pay, and a listed range is the employer's budget, not an offer.
Does Illinois require pay ranges in postings?
Yes, for many employers, those with 15 or more employees (in force 2025-01-01). Source: IDOL.
How much do security and it jobs in Illinois pay?
73 percent of postings list a pay range. The median listed pay is $113,250 and the middle half runs from $98,617 to $136,833. A listed range is the employer's budget for the role, not an offer. Illinois requires employers to list a range in many postings.
Which employers are hiring security and it in Illinois?
The employers with the most openings are Charles River Associates (9), Leidos (5), Air National Guard Units, Department of the Air Force (2). The full list is above.
How long do these postings stay open?
A typical posting has been open 21 days, and 24 percent have been open more than 60 days. An old posting is not always a closed one.
How do I apply?
Each job links to the employer's own application page. Open the posting, read the requirements and apply there. If you want a score for how well your resume matches a job, create a free Second Summit account and we score it with the reasons.
Where does this list come from?
We read employers' own career pages and USAJOBS. We do not list jobs from job boards or search services, and we do not estimate pay.
More
Federal jobs from USAJOBS, retrieved Oct 18, 2026. Second Summit is not operated, sponsored or endorsed by OPM.