How much does a Software Systems Developer I make in Illinois?
As of January 01, 2026, the average salary for a Software Systems Developer I in Illinois is $81,354 per year, which breaks down to an hourly rate of $39.
However, a Software Systems Developer I's salary can vary significantly. Here’s a look at the typical salary range:
- Top Earners (90th percentile): $93,936
- Majority Range (25th-75th percentile): $74,414 to $87,940
- Entry-Level (10th percentile): $68,095