As of May 01, 2026, the average salary for a Process Engineer I in Missouri is $82,278 per year, which breaks down to an hourly rate of $40.
However, a Process Engineer I's salary can vary significantly. Here’s a look at the typical salary range:
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Process Engineer I Salaries by Percentile
| Annual Salary |
Monthly Pay |
Weekly Pay |
Hourly Wage |
|
| 75th Percentile | $89,300 | $7,442 | $1,717 | $43 |
| Average | $82,278 | $6,856 | $1,582 | $40 |
| 25th Percentile | $75,831 | $6,319 | $1,458 | $36 |
Progress Rail, A Caterpillar Company - St Louis, MO
Par Health - Fenton, MO
Grimco, Inc. - Owensville, MO
CRB - Kansas City, MO
A Process Engineer I'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 Process Engineer I'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 |
|---|---|---|
| Process Engineer I | 0-2 years | $82,278 |
| Process Engineer II | 2-4 years | $94,301 |
| Process Engineer III | 4-7 years | $104,683 |
| Process Engineer IV | 7+ years | $127,946 |
| Process Engineering Supervisor | 7+ years | $111,650 |
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 Process Engineer Is. 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:
Understanding how a Process Engineer I'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 | $89,300 | $7,442 | $1,717 | $43 |
| Average | $82,278 | $6,856 | $1,582 | $40 |
| 25th Percentile | $75,831 | $6,319 | $1,458 | $36 |
For a Process Engineer I, the most direct path to higher earnings is advancing to the Process Engineer II role. This promotion typically comes with a significant pay increase, bringing the average annual salary to $94,301 - a projected growth of 15% over your current level.
Ready to take the next step in your career? Browse thousands of current Process Engineer I job openings on our job board. Use the search bar below to find your perfect match.
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