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1st Assistant Engineer Salary in Missouri

How much does a 1st Assistant Engineer make in Missouri? As of September 01, 2026, the average salary for a 1st Assistant Engineer in Missouri is $71,239 per year, which breaks down to an hourly rate of $34.

However, a 1st Assistant Engineer's salary can vary significantly. Here's a look at the typical salary range:

  • Top Earners (90th percentile): $82,310
  • Majority Range (25th-75th percentile): $66,415 to $77,034
  • Entry-Level (10th percentile): $62,022
Salary Factors Salary by Experience Related Job Salaries Top Paying Cities Explore Related Jobs

Check out 1st Assistant Engineer Job Openings in Missouri

Key Factors That Influence 1st Assistant Engineer Salaries

A 1st Assistant 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.

How Experience Level Affects 1st Assistant Engineer Salaries?

Experience is a primary driver of a 1st Assistant 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:

  • Entry-Level (less than 1 year): $70,032
  • Early Career (1-2 years): $85,262
  • Mid-Level (2-4 years): $99,938
  • Senior-Level (5-8 years): $117,060
  • Expert (over 8 years): $139,803
Job RoleYears of ExperienceAverage Salary
1st Assistant Engineer less than 1 year $70,032
Civil Engineer II 1-2 years $85,262
Civil Engineer III 2-4 years $99,938
Civil Engineer IV 5-8 years $117,060
Civil Engineer V over 8 years $139,803

How Do 1st Assistant Engineer Salaries Vary from State to State?

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 1st Assistant Engineers. For example, consider the average annual salaries in these key locations:

  • District of Columbia: $83,019.
  • California: $82,704.
  • Massachusetts: $81,602.

Top Paying Cities for 1st Assistant Engineer

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:

  • Braggadocio: $69,030
  • Eugene: $69,312
  • Fortuna: $69,293

1st Assistant Engineer Salary by Industry: Top Paying Sectors

For 1st Assistant Engineer roles, the industry you choose can affect earning potential by as much as 60% (the gap between the highest and lowest paying industries). Data shows that the Energy & Utilities and Insurance sectors offer the strongest compensation, at 30% above the average. In contrast, 1st Assistant Engineer positions in Transportation or Retail & Wholesale typically offer lower base pay, as these industries often view 1st Assistant Engineer as a support function rather than a direct revenue driver.

The top paying industries for a 1st Assistant Engineer

Industry Sector Average Annual Salary Average Hourly Rate Pay vs.Avg
Energy & Utilities $92,611 $45.0 30%
Insurance $89,049 $43.0 25%
Biotechnology $85,487 $41.0 20%
Pharmaceuticals $85,487 $41.0 20%
Software & Networking $81,925 $39.0 15%

1st Assistant Engineer Salary: Hourly Rate, Weekly Pay, and Monthly Pay

Understanding how a 1st Assistant 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.

  • Yearly
  • Monthly
  • Weekly
  • Hourly
  • Table View
Last Updated on September 01, 2026
$66,415
Average $71,239/year
$77,034
$5,535
Average $5,937/month
$6,420
$1,277
Average $1,370/week
$1,481
$32
Average $34/hour
$37
Annual Salary Monthly Pay Weekly Pay Hourly Wage
75th Percentile $77,034 $6,420 $1,481 $37
Average $71,239 $5,937 $1,370 $34
25th Percentile $66,415 $5,535 $1,277 $32

Find Your Next 1st Assistant Engineer Job

Ready to take the next step in your career? Browse thousands of current 1st Assistant Engineer job openings on our job board. Use the search bar below to find your perfect match.

  • Jones Lang LaSalle Americas, Inc. | CLAUDE, TX

    Assistant Chief Engineer

    Jones Lang LaSalle Americas, Inc. | CLAUDE, TX

    Jones Lang LaSalle Americas, Inc. is seeking an Assistant Chief Engineer to support the reliable, safe, and efficient operation of a Class A commercial pro... more

    9 Days Ago

  • Marriott | FAIRFIELD, SC

    Engineer

    Marriott | FAIRFIELD, SC

    Marriott is seeking a hands-on Engineer to support Facilities & Maintenance operations in our hospitality and travel environment. In this on-site role, you... more

    7 Days Ago

  • Exelon | FOX VALLEY FACILITY, IL

    Engineer

    Exelon | FOX VALLEY FACILITY, IL

    Exelon Corporation, a leader in sustainable energy, is seeking a seasoned Sr Engineer to join our dynamic team in Chicago. This pivotal role is geared towa... more

    7 Days Ago

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Where Does Our Salary Data Come From?

Salary.com salary estimates, histograms, trends, and comparisons are derived from both employer job postings and third-party data sources. We also provide multiple percentiles of salary information for your reference, click here to know Why the Salary Midpoint Formula Is Crucial to Getting Pay Equity Right. With more online, real-time compensation data than any other website, Salary.com helps you determine your exact pay target.

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