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Family & Level

Job Title

Principal Mechanical Engineer

The median salary range for Principal Mechanical Engineer disclosed in public job postings is $148k - $243k as of Jul 2026, based on 26 job postings from 12 companies.

Salary Range

Low

$148,150

24%

Mid

$195,325

24%

High

$242,500

Small Sample Size

9 Data Points

Data Points

Sort By

Oracle

3 Job Posts

$146k - $306k

$146,300 - $306,400

Principal Mechanical Engineer

United States

$146k - $306k

$146,300 - $306,400

Principal Mechanical Engineer

Seattle

$146k - $306k

$146,300 - $306,400

Principal Mechanical Engineer- Data Center Design and Innovation

United States

·

Last Posted: Jun 2026

Inactive

$139k - $292k

$139,400 - $291,800

Microsoft

11 Job Posts

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

Mountain View

·

6+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

Redmond

·

12+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

United States

·

12+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

Raleigh

·

6+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

Austin

·

6+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

Aliso Viejo

·

6+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

San Diego

·

6+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

Boise

·

6+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

Hillsboro

·

6+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

Redmond

·

6+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Principal Mechanical Engineer

United States

·

6+ Years Experience

·

Last Posted: Apr 2026

Inactive

$140k - $275k

$139,900 - $274,800

Muon Space

1 Job Post

$222k - $250k

$222,000 - $250,000

Principal Mechanical Engineer

San Jose

·

12+ Years Experience

·

Last Posted: Jul 2026

Inactive

$222k - $250k

$222,000 - $250,000

Outpost

1 Job Post

$225k - $245k

$225,000 - $245,000

Principle Mechanical Engineer

Los Angeles

·

8+ Years Experience

·

Last Posted: Jul 2026

Inactive

$225k - $245k

$225,000 - $245,000

SpaceX

1 Job Post

$175k - $240k

$175,000 - $240,000

Principal Mechanical Engineer (Starship)

Hawthorne

·

7+ Years Experience

·

Last Posted: Mar 2026

Inactive

$175k - $240k

$175,000 - $240,000

Commonwealth Fusion

1 Job Post

$150k - $225k

$150,000 - $225,000

Principal Mechanical Engineer

Milpitas

15+ Years Experience

$150k - $225k

$150,000 - $225,000

Plug Power

1 Job Post

$107k - $170k

$106,500 - $170,400

Principal Mechanical Engineer

Republic of India

12-14 Years Experience

$107k - $170k

$106,500 - $170,400

Berkshire Grey

2 Job Posts

$130k - $170k

$130,000 - $170,000

Principal Mechanical Engineer

Massachusetts

·

8+ Years Experience

·

Last Posted: Jul 2026

Inactive

$130k - $170k

$130,000 - $170,000

Principal Mechanical Engineer

United States

·

8+ Years Experience

·

Last Posted: Jul 2026

Inactive

$130k - $170k

$130,000 - $170,000

NeoPhotonics

2 Job Posts

N/A

N/A

Principal Engineer, Mechanical

Wuhan

3+ Years Experience

N/A

N/A

Principal Engineer, Mechanical

People's Republic of China

3+ Years Experience

N/A

N/A

1 - 9 of 12