Jobs/Roles/Mechanical & Physical Systems

Mechanical & Physical Systems Jobs

Mechanical, aerospace, and physical-systems engineering roles at hard-tech companies.

2,664 open roles · Updated Sep 26, 2026

2,664 jobs

Blue Origin Propulsion Engineer, Test/Flight - Engine Test, BE-3U

Seattle, WA · Huntsville, AL

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Aerospace

Anduril Industries Senior Mechanical Engineer, Intelligence Systems

Santa Ana, CA

$146k–$194k / year

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Defense

Shield AI Principal Fuel Systems Engineer - X-BAT (R4640)

Dallas, TX · United States · Boston, MA · San Diego, CA

$209k–$314k / year

Job type: Mechanical & Physical Systems
Seniority: Staff / Principal
Sector: Defense

SpaceX Mechanical Engineer, Cabin Structures (Crew Starship)

Starbase, TX

Job type: Mechanical & Physical Systems
Seniority: Mid-Level
Sector: Aerospace

Relativity Space Senior Turbomachinery Test Responsible Engineer

Long Beach, CA

$132k–$198k / year

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Aerospace

Rocket Lab Senior Equipment Engineer I - Facilities

Albuquerque, NM

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Aerospace

Blue Origin Lunar Lander Fluids Testbed Engineer III

Space Coast, FL

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Aerospace

Anduril Industries Senior Thermal Engineer, Mission Electronics

Costa Mesa, CA

$146k–$194k / year

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Defense

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SpaceX MEP/Construction Engineer

Bastrop, TX

Job type: Mechanical & Physical Systems
Seniority: Mid-Level
Sector: Aerospace

Relativity Space Turbomachinery Test Responsible Engineer II

Long Beach, CA

$104k–$156k / year

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Aerospace

Rocket Lab Spacecraft Mechanical Engineer I

Long Beach, CA

$82k–$115k / year

Job type: Mechanical & Physical Systems
Seniority: Entry-Level
Sector: Aerospace

Blue Origin Launch Engineer II - Fluids

Space Coast, FL

Job type: Mechanical & Physical Systems
Seniority: Mid-Level
Sector: Aerospace

Anduril Industries Senior Thermal Analysis Engineer

Lexington, MA

$146k–$194k / year

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Defense

SpaceX Mechanical Engineer, Mechanisms (Crew Starship)

Starbase, TX

Job type: Mechanical & Physical Systems
Seniority: Mid-Level
Sector: Aerospace

Relativity Space Senior Mechanical Engineer

Stennis Space Center, MS

$124k–$186k / year

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Aerospace

Rocket Lab Propulsion Design Engineer II

Long Beach, CA

$101k–$151k / year

Job type: Mechanical & Physical Systems
Seniority: Mid-Level
Sector: Aerospace

Blue Origin Liquid System Responsible Engineer III — Cryogenic DFM

Seattle, WA · Space Coast, FL · Huntsville, AL · Denver, CO · Los Angeles, CA

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Aerospace

Anduril Industries Staff Materials Engineer, Design Allowables & Materials Data

Costa Mesa, CA

$166k–$220k / year

Job type: Mechanical & Physical Systems
Seniority: Staff / Principal
Sector: Defense

SpaceX New Graduate Engineer, Mechanical - '26/'27 (Starlink)

Bastrop, TX

Job type: Mechanical & Physical Systems
Seniority: Entry-Level
Sector: Aerospace

Relativity Space Manager, Turbomachinery Engineering

Long Beach, CA

$160k–$246k / year

Job type: Mechanical & Physical Systems
Seniority: Manager
Sector: Aerospace

Rocket Lab Neutron Mechanical Development Intern

New Zealand

Job type: Mechanical & Physical Systems
Seniority: Intern
Sector: Aerospace

Blue Origin Sr Structural Production Support and Sustaining Engineer

Space Coast, FL

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Aerospace

Anduril Industries (HVAC Specialist) Technical Operations Engineer - Connected Warfare

Costa Mesa, CA

$113k–$155k / year

Job type: Mechanical & Physical Systems
Seniority: Mid-Level
Sector: Defense

SpaceX New Graduate Engineer, Mechanical - '26/'27 (Starlink)

Redmond, WA

$100k–$165k / year

Job type: Mechanical & Physical Systems
Seniority: Entry-Level
Sector: Aerospace

Relativity Space Mechanical Engineer II

Stennis Space Center, MS

$104k–$156k / year

Job type: Mechanical & Physical Systems
Seniority: Mid-Level
Sector: Aerospace

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Frequently asked questions

How many mechanical & physical systems jobs are on BuildList?: There are currently 2,664 open mechanical & physical systems roles listed on BuildList, refreshed hourly straight from company career pages.
What kinds of companies are hiring mechanical & physical systems?: Ambitious, fast-growing companies building the future — across AI, defense, aerospace, robotics, energy, and more. You can filter the list by sector, company stage, experience level, and location.
Are there remote mechanical & physical systems jobs?: Yes. Use the location filter, or open the remote view for this role to see only fully-remote mechanical & physical systems openings.
How do I apply for mechanical & physical systems jobs?: Every listing links straight to the company's own application page — BuildList doesn't sit between you and the employer, so there's no account or middleman.