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As of August 01, 2026, the average salary for a System Developer in Illinois is $117,842 per year, which breaks down to an hourly rate of $57.
However, a System Developer's salary can vary significantly. Here’s a look at the typical salary range:
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System Developer Salaries by Percentile
| Annual Salary |
Monthly Pay |
Weekly Pay |
Hourly Wage |
|
| 75th Percentile | $124,042 | $10,337 | $2,385 | $60 |
| Average | $117,842 | $9,820 | $2,266 | $57 |
| 25th Percentile | $107,088 | $8,924 | $2,059 | $51 |
SimVentions, Inc - CHAPTICO, MD
SimVentions, Inc - LA PLATA, MD
SimVentions, Inc - DENTSVILLE, MD
SimVentions, Inc - PORT TOBACCO, MD
A System Developer's salary isn't a fixed number. It's shaped by several important factors. Below, we'll explore how your years of experience, geographic location and company size can directly affect your earning potential.
Experience is a primary driver of a System Developer's salary. As you build your skills and take on more complex tasks, your compensation generally increases. Here’s how the average salary grows at different career stages:
| Levels | Salary |
|---|---|
| Web Softw... Level System Developer | $72,861 |
| Web Softw... Level System Developer | $101,842 |
| System De... Level System Developer | $117,386 |
| Web Softw... Level System Developer | $138,212 |
| Web Softw... Level System Developer | $150,095 |
What Am I Worth?
Your salary can change significantly depending on where you work. States with a higher cost of living and strong industrial sectors often pay more to attract System Developers. For example, consider the average annual salaries in these key locations:
Salaries can also vary between different cities. Major metropolitan areas or cities with a high demand for technicians often offer more competitive pay. Here are a few examples of average annual salaries in different U.S. cities:
For System Developer roles, the industry you choose can affect earning potential by as much as 20% (the gap between the highest and lowest paying industries). Data shows that the Aerospace & Defense and Biotechnology sectors offer the strongest compensation, at 10% above the average. In contrast, System Developer positions in Transportation or Retail & Wholesale typically offer lower base pay, as these industries often view System Developer as a support function rather than a direct revenue driver.
| Industry Sector | Average Annual Salary | Average Hourly Rate | Pay vs.Avg |
|---|---|---|---|
| Aerospace & Defense | $129,627 | $62.0 | 10% |
| Biotechnology | $129,627 | $62.0 | 10% |
| Energy & Utilities | $129,627 | $62.0 | 10% |
| Financial Services | $129,627 | $62.0 | 10% |
| Healthcare | $129,627 | $62.0 | 10% |
Understanding how a System Developer's annual salary breaks down can help with budgeting. Below, you can see the average hourly rate, weekly pay, and monthly pay for this role. Use the buttons to switch between different pay periods.
| Annual Salary | Monthly Pay | Weekly Pay | Hourly Wage | |
|---|---|---|---|---|
| 75th Percentile | $124,042 | $10,337 | $2,385 | $60 |
| Average | $117,842 | $9,820 | $2,266 | $57 |
| 25th Percentile | $107,088 | $8,924 | $2,059 | $51 |
Ready to take the next step in your career? Browse thousands of current System Developer job openings on our job board. Use the search bar below to find your perfect match.
SimVentions, Inc
MOUNT VICTORIA, MD
SimVentions, Inc | MOUNT VICTORIA, MD
SimVentions, Inc. (Glassdoor 4.6) seeks a Weapons System Software Developer to design, build, and test mission-critical software for Defense & Aerospace sy... more
11 Days Ago
SimVentions, Inc
DAHLGREN, VA
SimVentions, Inc | DAHLGREN, VA
SimVentions, Inc. (Glassdoor 4.6) seeks a Weapons System Software Developer to design, implement, and integrate mission-critical software for defense and a... more
11 Days Ago
SimVentions, Inc
KING GEORGE, VA
SimVentions, Inc | KING GEORGE, VA
SimVentions, Inc. (Glassdoor 4.6) seeks a Weapons System Software Developer to design, build, and integrate mission-critical software for U.S. defense and ... more
11 Days Ago
SimVentions, Inc
COLONIAL BEACH, VA
SimVentions, Inc | COLONIAL BEACH, VA
SimVentions, Inc. (Glassdoor 4.6) seeks a Weapons System Software Developer to build mission-critical solutions for Defense & Aerospace customers. In this ... more
11 Days Ago
SimVentions, Inc
PORT ROYAL, VA
SimVentions, Inc | PORT ROYAL, VA
SimVentions, Inc. (Glassdoor 4.6) seeks a Weapons System Software Developer to build mission-critical solutions for Defense & Aerospace customers. In this ... more
11 Days Ago
SimVentions, Inc
CHARLOTTE HALL, MD
SimVentions, Inc | CHARLOTTE HALL, MD
SimVentions, Inc. (Glassdoor 4.6) seeks a Weapons System Software Developer to build mission-critical solutions for Defense & Aerospace customers. In this ... more
12 Days Ago
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