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As of August 01, 2026, the average salary for a Senior Geotechnical Engineer in Illinois is $112,600 per year, which breaks down to an hourly rate of $54.
However, a Senior Geotechnical Engineer's salary can vary significantly. Here’s a look at the typical salary range:
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Senior Geotechnical Engineer Salaries by Percentile
| Annual Salary |
Monthly Pay |
Weekly Pay |
Hourly Wage |
|
| 75th Percentile | $121,900 | $10,158 | $2,344 | $59 |
| Average | $112,600 | $9,383 | $2,165 | $54 |
| 25th Percentile | $100,500 | $8,375 | $1,933 | $48 |
Midland Standard Engineering & Test - South Elgin, IL
ComEd - Fox Valley Facility, IL
ComEd - Fox Valley Facility, IL
ComEd - Fox Valley Facility, IL
A Senior Geotechnical 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 Senior Geotechnical 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:
| Job Role | Years of Experience | Average Salary |
|---|---|---|
| Entry Geotechnical Engineer | 0-2 years | $75,511 |
| Intermediate Geotechnical Engineer | 2-4 years | $87,694 |
| Senior Geotechnical Engineer | 4-7 years | $112,541 |
| Expert Geotechnical Engineer | 7+ years | $130,286 |
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 Senior Geotechnical 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:
Senior Geotechnical Engineer salary potential scales significantly with company size. Data shows that Enterprise companies (5,000+ employees) pay the highest average salary at around $122,318. While startup companies pay approximate $103,788.
| Company Size | Employees | Average Salary |
|---|---|---|
| Startup | 1~50 | $103,788 |
| Growth Stage | 51~500 | $109,690 |
| Established | 501~5000 | $118,211 |
| Enterprise | 5000+ | $122,318 |
For Senior Geotechnical Engineer roles, the industry you choose can affect earning potential by as much as 40% (the gap between the highest and lowest paying industries). Data shows that the Construction and Energy & Utilities sectors offer the strongest compensation, at 20% above the average. In contrast, Senior Geotechnical Engineer positions in Business Services or Edu., Gov't. & Nonprofit typically offer lower base pay, as these industries often view Senior Geotechnical Engineer as a support function rather than a direct revenue driver.
| Industry Sector | Average Annual Salary | Average Hourly Rate | Pay vs.Avg |
|---|---|---|---|
| Construction | $135,120 | $65.0 | 20% |
| Energy & Utilities | $123,860 | $60.0 | 10% |
Understanding how a Senior Geotechnical 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 | $121,900 | $10,158 | $2,344 | $59 |
| Average | $112,600 | $9,383 | $2,165 | $54 |
| 25th Percentile | $100,500 | $8,375 | $1,933 | $48 |
For a Senior Geotechnical Engineer, the most direct path to higher earnings is advancing to the Expert Geotechnical Engineer role. This promotion typically comes with a significant pay increase, bringing the average annual salary to $130,300 - a projected growth of 16% over your current level.
Ready to take the next step in your career? Browse thousands of current Senior Geotechnical Engineer job openings on our job board. Use the search bar below to find your perfect match.
ComEd
Fox Valley Facility, IL
ComEd | Fox Valley Facility, IL
Who We Are: We're powering a cleaner, brighter future. Exelon is leading the energy transformation, and we're calling all problem solvers, innovators, comm... more
5 Days Ago
ComEd
Fox Valley Facility, IL
ComEd | Fox Valley Facility, IL
Who We Are: We're powering a cleaner, brighter future. Exelon is leading the energy transformation, and we're calling all problem solvers, innovators, comm... more
5 Days Ago
ComEd
Ashburn Park, IL
ComEd | Ashburn Park, IL
Who We Are: We're powering a cleaner, brighter future. Exelon is leading the energy transformation, and we're calling all problem solvers, innovators, comm... more
5 Days Ago
Rogers Freels & Associates Inc
Chillicothe, IL
Rogers Freels & Associates Inc | Chillicothe, IL
Job Description. Job Description. RFA Engineering. (www.rfamec.com) is an engineering service provider dedicated to delivering our clients with timely engi... more
5 Days Ago
Medline Industries
Northbrook, IL
Medline Industries | Northbrook, IL
Senior Platform EngineerMedline Industries is seeking a Senior Platform Engineer to join our Platform Engineering team. As a Senior Platform Engineer, you ... more
7 Days Ago
Medline Industries
Northbrook, IL
Medline Industries | Northbrook, IL
Job Summary Job Description Major Responsibilities Rapidly deliver proofs of concept (POCs) and pilots, clearly articulate their impact, and challenge idea... more
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