Jobs/Roles/Mechanical & Physical Systems

Mechanical & Physical Systems Jobs

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

2,546 open roles · Updated Sep 22, 2026

2,546 jobs

Shield AI Air Vehicle Lead, Chief Engineer

San Diego, CA · Dallas, TX

$212k–$318k / year

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

K2 Space Thermal Control System (TCS) Design Engineer

Los Angeles, CA

$100k–$215k / year

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

Saronic Structural Build Engineer

Franklin, LA

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

Castelion Senior Propulsion Engineer

Torrance, CA

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

Impulse Space Propulsion Analyst (Fluids)

Redondo Beach, CA

$100k–$150k / year

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

Zipline Applications Engineer Intern (Spring 2027)

South San Francisco, CA

$83k / year

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

CesiumAstro Senior Mechanical Engineer

Melbourne, FL

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

Ursa Major Staff Thermal-Fluids Analysis Engineer

Remote

$155k–$190k / year

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

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Cowboy Space Corporation Powerpack Engineer Level II

Kent, WA · Washington, D.C.

$125k–$155k / year

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

Boom Supersonic Compressor Aerodynamics Engineer

Centennial, CO

$125k–$168k / year

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

Harmattan AI Senior Mechanical Engineer- Quadcopter Systems

Switzerland

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

CHAOS Industries Mechanical Engineer, Structures

El Segundo, CA

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

Fluidstack Resident Structural Engineer (PHX)

Phoenix, AZ

$208k–$263k / year

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

Commonwealth Fusion Staff Mechanical Engineer - Vacuum

Milpitas, CA

$150k–$225k / year

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

Inversion Senior Aerothermal Engineer

Playa Vista, CA

$137k–$193k / year

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

Varda Space Launch and Recovery Engineering Manager

El Segundo, CA

$170k–$246k / year

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

SpaceXAI Mechanical Engineer (Macrohard/Colossus) - Memphis

Southaven, MS · Memphis, TN

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

Hermeus Thermal Engineer

Los Angeles, CA

$92k–$140k / year

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

Rivan Process Engineer

United Kingdom

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

Firefly Aerospace Composite M&P Engineer I

Briggs, TX

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

SpaceX Test Stand Design & Build Engineer (Structures/Fluid Systems)

McGregor, TX

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

Rocket Lab Senior Aerodynamics Analyst

New Zealand

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

Relativity Space Senior Vehicle Structures Engineer

Long Beach, CA

$132k–$198k / year

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

Nvidia Mechanical Design Team Manager

Israel

Job type: Mechanical & Physical Systems
Seniority: Manager
Sector: Compute & Semiconductors

Blue Origin Sr. Fluid Systems Responsible Engineer - Lunar Permanence

Space Coast, FL

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

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How many mechanical & physical systems jobs are on BuildList?: There are currently 2,546 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.