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As of August 01, 2026, the average salary for a Mechanical Principal Engineer in Washington is $161,501 per year, which breaks down to an hourly rate of $78.
However, a Mechanical Principal Engineer's salary can vary significantly. Here’s a look at the typical salary range:
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Mechanical Principal Engineer Salaries by Percentile
| Annual Salary |
Monthly Pay |
Weekly Pay |
Hourly Wage |
|
| 75th Percentile | $169,614 | $14,134 | $3,262 | $82 |
| Average | $161,501 | $13,458 | $3,106 | $78 |
| 25th Percentile | $153,577 | $12,798 | $2,953 | $74 |
Oracle - Seattle, WA
Actalent - Seattle, WA
Micropump - Vancouver, WA
McLaughlin Research Corporation - Keyport, WA
A Mechanical Principal 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 Mechanical Principal 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 |
|---|---|
| Mechanica... Level Mechanical Principal Engineer | $117,357 |
| Mechanica... Level Mechanical Principal Engineer | $139,837 |
| Mechanica... Level Mechanical Principal Engineer | $160,904 |
| Mechanica... Level Mechanical Principal Engineer | $204,716 |
| Mechanica... Level Mechanical Principal Engineer | $110,021 |
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 Mechanical Principal 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 Mechanical Principal Engineer roles, the industry you choose can affect earning potential by as much as 55% (the gap between the highest and lowest paying industries). Data shows that the Financial Services and Internet sectors offer the strongest compensation, at 25% above the average. In contrast, Mechanical Principal Engineer positions in Edu., Gov't. & Nonprofit or Transportation typically offer lower base pay, as these industries often view Mechanical Principal Engineer as a support function rather than a direct revenue driver.
| Industry Sector | Average Annual Salary | Average Hourly Rate | Pay vs.Avg |
|---|---|---|---|
| Financial Services | $201,876 | $97.0 | 25% |
| Internet | $193,801 | $93.0 | 20% |
| Biotechnology | $185,726 | $89.0 | 15% |
| Energy & Utilities | $185,726 | $89.0 | 15% |
| Software & Networking | $185,726 | $89.0 | 15% |
Understanding how a Mechanical Principal 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 | $169,614 | $14,134 | $3,262 | $82 |
| Average | $161,501 | $13,458 | $3,106 | $78 |
| 25th Percentile | $153,577 | $12,798 | $2,953 | $74 |
Ready to take the next step in your career? Browse thousands of current Mechanical Principal Engineer job openings on our job board. Use the search bar below to find your perfect match.
Jacobs Solutions
Bellevue, WA
Jacobs Solutions | Bellevue, WA
Mechanical Engineer. At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient e... more
11 Days Ago
Janicki Industries, Inc.
Sedro-Woolley, WA
Janicki Industries, Inc. | Sedro-Woolley, WA
Job Description. Job Description. Janicki Overview. At Janicki Industries, we turn complex ideas into real-world solutions through advanced engineering and... more
7 Days Ago
Oracle
Seattle, WA
Oracle | Seattle, WA
hackajob is collaborating with Oracle to connect them with exceptional professionals for this role. Description The ideal candidate is an experienced RDMA ... more
7 Days Ago
lululemon
Seattle, Washington, WA
lululemon | Seattle, Washington, WA
This job is with lululemon, an inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not co... more
11 Days Ago
Serko Ltd
Seattle, WA
Serko Ltd | Seattle, WA
Job Description. Job Description. Serko is a cutting-edge tech platform in global business travel & expense technology. When you join Serko, you become par... more
8 Days Ago
Elasticsearch B.V.
Seattle, WA
Elasticsearch B.V. | Seattle, WA
A leading technology company is looking for a Principal Software Engineer II to join their globally distributed team in Seattle.You will lead initiatives f... more
10 Days Ago
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