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As of August 01, 2026, the average salary for an Infrastructure Engineer III in Illinois is $114,380 per year, which breaks down to an hourly rate of $55.
However, an Infrastructure Engineer III's salary can vary significantly. Here’s a look at the typical salary range:
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Infrastructure Engineer III Salaries by Percentile
| Annual Salary |
Monthly Pay |
Weekly Pay |
Hourly Wage |
|
| 75th Percentile | $127,150 | $10,596 | $2,445 | $61 |
| Average | $114,380 | $9,532 | $2,200 | $55 |
| 25th Percentile | $107,010 | $8,918 | $2,058 | $51 |
Vail Systems Inc. - Mundelein, IL
Zmodo AI Inc - Champaign, IL
Jet Support Services, Inc. - Chicago, IL
fairlife - Chicago, IL
An Infrastructure Engineer III'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 an Infrastructure Engineer III'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:
| Job Role | Years of Experience | Average Salary |
|---|---|---|
| Facilities Project Engineer I | 0-2 years | $81,277 |
| Facilities Project Engineer II | 2-4 years | $93,168 |
| Infrastructure Engineer III | 4-7 years | $114,380 |
| Facilities Project Engineer IV | 7+ years | $137,129 |
| Facilities Project Engineer V | 7-10 years | $153,150 |
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 Infrastructure Engineer IIIs. 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:
Infrastructure Engineer III salary potential scales significantly with company size. Data shows that Enterprise companies (5,000+ employees) pay the highest average salary at around $128,042. While startup companies pay approximate $108,320.
| Company Size | Employees | Average Salary |
|---|---|---|
| Startup | 1~50 | $108,320 |
| Growth Stage | 51~500 | $114,562 |
| Established | 501~5000 | $123,647 |
| Enterprise | 5000+ | $128,042 |
For Infrastructure Engineer III roles, the industry you choose can affect earning potential by as much as 45% (the gap between the highest and lowest paying industries). Data shows that the Financial Services and Healthcare sectors offer the strongest compensation, at 20% above the average. In contrast, Infrastructure Engineer positions in Retail & Wholesale or Transportation typically offer lower base pay, as these industries often view Infrastructure Engineer III as a support function rather than a direct revenue driver.
| Industry Sector | Average Annual Salary | Average Hourly Rate | Pay vs.Avg |
|---|---|---|---|
| Financial Services | $137,256 | $66.0 | 20% |
| Healthcare | $137,256 | $66.0 | 20% |
| Software & Networking | $137,256 | $66.0 | 20% |
| Energy & Utilities | $131,537 | $63.0 | 15% |
| Pharmaceuticals | $131,537 | $63.0 | 15% |
Understanding how an Infrastructure Engineer III'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 | $127,150 | $10,596 | $2,445 | $61 |
| Average | $114,380 | $9,532 | $2,200 | $55 |
| 25th Percentile | $107,010 | $8,918 | $2,058 | $51 |
Promotions are the fastest way to increase your earnings. As an Infrastructure Engineer III, you have the following paths for advancement. The table below compares the salary raises for common next-step roles. By comparing these figures, you can choose the career path that best meets your financial goals.
| Next Step Role | Estimate Salary | Projected Raise |
|---|---|---|
| Facilities Project Engineer IV | $137,200 | 20% |
| Production Facilities Engineer IV | $141,290 | 24% |
Ready to take the next step in your career? Browse thousands of current Infrastructure Engineer III job openings on our job board. Use the search bar below to find your perfect match.
NET56
Barrington, IL
NET56 | Barrington, IL
Job Description. Job Description. Position Title. Network Infrastructure Engineer. Location. On-premises. Type of Employment. Full-time. Job Description. T... more
6 Days Ago
Harrison Consulting Solutions
Chicago, IL
Harrison Consulting Solutions | Chicago, IL
Job Description. Job Description. Midwest multi-disciplined engineering firm is looking to add a Senior Water Infrastructure Engineer to their Chicago team... more
7 Days Ago
Orion Engineers, LLC
Chicago, IL
Orion Engineers, LLC | Chicago, IL
Job Description. Job Description. Orion Engineers, PLLC. was founded to make a difference to our employees, clients, and fellow military veterans who brave... more
7 Days Ago
Harrison Consulting Solutions
Naperville, IL
Harrison Consulting Solutions | Naperville, IL
Job Description. Job Description. Midwest multi-disciplined engineering firm is looking to add a Senior Water Infrastructure Engineer to their Naperville t... more
8 Days Ago
PGTEK
Chicago, IL
PGTEK | Chicago, IL
Job Description. Job Description. Infrastructure / High-Performance Computing (HPC) Support Engineer. We are seeking an. Infrastructure / High-Performance ... more
5 Days Ago
M1 Finance
Chicago, IL
M1 Finance | Chicago, IL
Job Description. Job Description. Company Description. M1 Finance has created a personal wealth-building platform made for the modern era, uniting personal... more
6 Days Ago
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