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Job Title

Principal Mechanical Engineer

The median salary range for Principal Mechanical Engineer disclosed in public job postings is $142k - $240k as of Oct 2026, based on 52 job postings from 17 companies.

Salary Range

Low

$142,000

26%

Mid

$191,000

26%

High

$240,000

Small Sample Size

15 Data Points

Data Points

Sort By

Aescape

1 Job Post

$250k - $280k

$250,000 - $280,000

Microsoft

11 Job Posts

$140k - $275k

$139,900 - $274,800

Muon Space

1 Job Post

$222k - $250k

$222,000 - $250,000

Commonwealth Fusion

2 Job Posts

$169k - $248k

$168,500 - $247,500

Outpost

1 Job Post

$225k - $245k

$225,000 - $245,000

SpaceX

2 Job Posts

$175k - $240k

$175,000 - $240,000

Oracle

12 Job Posts

$115k - $235k

$114,600 - $234,600

Epirus

2 Job Posts

$138k - $193k

$138,000 - $193,000

CesiumAstro

2 Job Posts

$142k - $189k

$142,000 - $189,000

Berkshire Grey

4 Job Posts

$140k - $185k

$140,000 - $185,000

Plug Power

1 Job Post

$107k - $170k

$106,500 - $170,400

Niku

1 Job Post

N/A

N/A

1 - 12 of 17