How much does a Software Systems Engineer IV make in Illinois?
As of March 01, 2026, the average salary for a Software Systems Engineer IV in Illinois is $146,997 per year, which breaks down to an hourly rate of $71.
However, a Software Systems Engineer IV's salary can vary significantly. Here’s a look at the typical salary range:
- Top Earners (90th percentile): $165,937
- Majority Range (25th-75th percentile): $138,289 to $156,911
- Entry-Level (10th percentile): $130,361