Jobs/Mechanical & Physical Systems/Los Angeles

Mechanical & Physical Systems Jobs in Los Angeles

Mechanical & Physical Systems roles at companies building the future — in Los Angeles.

927 open roles · Updated Oct 10, 2026

927 jobs

Swarm Aero Structures Analyst

Oxnard, CA

$155k–$210k / year

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

Anduril Industries Aviation Maintenance Engineer - Advanced Effects

Costa Mesa, CA

$77k–$102k / year

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

K2 Space Spacecraft Fluids & Pumps Engineering Technician

Los Angeles, CA

$73k–$94k / year

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

Valar Atomics Mechanical Technician, Process Gas Systems

Torrance, CA

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

True Anomaly Senior Dynamics Analysis Engineer

Denver, CO · Long Beach, CA

$135k–$200k / year

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

Hadrian Automation & Robotics System Engineer, Additive Manufacturing

Los Angeles, CA

$135k–$220k / year

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

CesiumAstro Staff Propulsion Engineer

El Segundo, CA

$150k–$181k / year

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

Neros Mission Integration Specialist

Torrance, CA

$68k–$95k / year

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

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AMCA Mechanical Engineering Intern (Summer 2027)

El Segundo, CA

$62k–$104k / year

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

Varda Space Propulsion Engineer II - Ground Fluids

El Segundo, CA

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

Apex Space Lead Electric Propulsion Engineer

Los Angeles, CA

$156k–$215k / year

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

Divergent Summer 2027 Engineering Intern

Torrance, CA

$79k–$94k / year

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

Antares Thermo-Mechanical Design Engineer - Reactor Cavity Cooling Systems

Los Angeles, CA

$140k–$185k / year

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Energy & Climate

Layup Parts Director of Mechanical Engineering

Huntington Beach, CA

$190k–$240k / year

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

Rocket Lab Principal Combustion Devices Engineer

Long Beach, CA

$162k–$270k / year

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

Mach Industries Summer 2027 Engineering Internship, Aerospace

Huntington Beach, CA · Victorville, CA

$62k–$114k / year

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

Rainmaker Lead, Mechanical Engineering

El Segundo, CA

$120k–$150k / year

Job type: Mechanical & Physical Systems
Seniority: Manager
Sector: Energy & Climate

Meta Research Scientist, Polymer Physicist

Redmond, WA · Pasadena, CA

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

SpaceX Sr. Environmental Engineer, Business Operations

Hawthorne, CA

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

Blue Origin Sr. Thermal/Fluids Engineer - Lunar Permanence

Seattle, WA · Los Angeles, CA · Denver, CO

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

Fluidstack Structural Engineer, Thermofluids

Austin, TX · New York, NY · San Francisco, CA · Los Angeles, CA · Seattle, WA

$210k–$260k / year

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

Radiant Mechanisms Engineer

El Segundo, CA

$134k–$185k / year

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

Astrolab Lead Loads and Dynamics Engineer

Hawthorne, CA

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

Inversion Engineering Manager, Arc Vehicle Mechanical

Playa Vista, CA

$148k–$203k / year

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

Starpath Senior Mechanical Engineer (Structures)

Hawthorne, CA

$165k–$200k / year

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

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Frequently asked questions

How many mechanical & physical systems jobs are in Los Angeles?: There are currently 927 open mechanical & physical systems roles in Los Angeles on BuildList, refreshed hourly from company career pages.
What companies hire mechanical & physical systems talent in Los Angeles?: The live list includes companies building the future across AI, defense, aerospace, robotics, energy, and more. Sort and filter the openings to compare employers, levels, sectors, and stages.
Are there remote mechanical & physical systems jobs outside Los Angeles?: Yes. BuildList has a dedicated remote mechanical & physical systems view for roles companies explicitly mark as remote. Regional restrictions can still apply.
How do I apply for mechanical & physical systems jobs in Los Angeles?: 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.