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As of August 01, 2026, the average salary for a Mainframe Engineer in Illinois is $86,968 per year, which breaks down to an hourly rate of $42.
However, a Mainframe Engineer's salary can vary significantly. Here’s a look at the typical salary range:
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Mainframe Engineer Salaries by Percentile
| Annual Salary |
Monthly Pay |
Weekly Pay |
Hourly Wage |
|
| 75th Percentile | $94,024 | $7,835 | $1,808 | $45 |
| Average | $86,968 | $7,247 | $1,672 | $42 |
| 25th Percentile | $78,838 | $6,570 | $1,516 | $38 |
Lane Enterprises Inc - BEALETON, VA
BHEGT - BRUSHY FORK, WV
BHE GT&S - BRIDGEPORT, WV
GE Vernova - WILMINGTON, NC
A Mainframe Engineer'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 Mainframe Engineer'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 |
|---|---|
| Entry Level Mainframe Engineer | $83,704 |
| Intermediate Level Mainframe Engineer | $83,954 |
| Senior Level Mainframe Engineer | $86,968 |
| Specialist Level Mainframe Engineer | $89,873 |
| Expert Level Mainframe Engineer | $90,081 |
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 Mainframe Engineers. 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 Mainframe Engineer roles, the industry you choose can affect earning potential by as much as 100% (the gap between the highest and lowest paying industries). Data shows that the Aerospace & Defense and Business Services sectors offer the strongest compensation, at 50% above the average. In contrast, Mainframe Engineer positions in Biotechnology or Transportation typically offer lower base pay, as these industries often view Mainframe Engineer as a support function rather than a direct revenue driver.
| Industry Sector | Average Annual Salary | Average Hourly Rate | Pay vs.Avg |
|---|---|---|---|
| Aerospace & Defense | $130,452 | $63.0 | 50% |
Understanding how a Mainframe Engineer'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 | $94,024 | $7,835 | $1,808 | $45 |
| Average | $86,968 | $7,247 | $1,672 | $42 |
| 25th Percentile | $78,838 | $6,570 | $1,516 | $38 |
Ready to take the next step in your career? Browse thousands of current Mainframe Engineer job openings on our job board. Use the search bar below to find your perfect match.
GE Vernova
UPPER UNION, NY
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AVONDALE, IL
Exelon
KENNETT SQUARE, PA
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Marvin
BISMARCK, ND
Marvin | BISMARCK, ND
Marvin is seeking a Controls Engineer to design, program, and support automated manufacturing systems for our premium window and door operations. In this r... more
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