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.

788 open roles · Updated Sep 21, 2026

788 jobs

Rivian Sr. Manager Durability CAE

Irvine, CA

$196k–$245k / year

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

General Matter Specialist Lab Piping Designer (Buildings)

Los Angeles, CA

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

Freeform Senior Design Engineer (Aerospace & Defense Hardware)

Hawthorne, CA

$150k–$200k / year

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

Anduril Industries Senior Mechanical Engineer - Lethality

Costa Mesa, CA

$166k–$220k / year

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

K2 Space Solar Design Engineer

Los Angeles, CA

$100k–$140k / year

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

Impulse Space Propulsion Component Engineer (Solenoid Valve)

Redondo Beach, CA

$100k–$155k / year

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

Inversion Senior Propulsion and Energetics Thermofluids Engineer

Playa Vista, CA

$137k–$193k / year

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

Varda Space Propulsion Engineer II - Ground Fluids

El Segundo, CA

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

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Hermeus Structures Design Engineer

Los Angeles, CA

$92k–$187k / year

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

SpaceX Design Reliability Engineer (Falcon & Dragon)

Hawthorne, CA

$100k–$130k / year

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

Rocket Lab Propulsion Design Intern Summer 2027

Long Beach, CA

$58k / year

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

Relativity Space Senior Mechanisms Systems Engineer

Long Beach, CA

$132k–$198k / year

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

Blue Origin Thermal Hardware Engineer II - Lunar Permanence

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

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

Radiant Senior Thermal Modeling Analyst

El Segundo, CA

$140k–$225k / year

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

Rivian Staff Thermal Attributes Engineer

Irvine, CA

$154k–$193k / year

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

General Matter Mechanical Design Engineer - Plant Piping Systems

Los Angeles, CA

$90k–$175k / year

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

Freeform Design Engineer (Aerospace and Defense Hardware)

Hawthorne, CA

$120k–$150k / year

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

Anduril Industries Senior Multiphysics Engineer, High Speed Reacting Flow

Costa Mesa, CA

$146k–$194k / year

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

K2 Space Senior Solar Design Engineer

Los Angeles, CA

$140k–$175k / year

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

Impulse Space Thermal Engineering Intern (Summer 2027)

Redondo Beach, CA

$62k / year

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

Inversion Senior Avionics Mechanical Engineer

Playa Vista, CA

$137k–$193k / year

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

Varda Space Thermofluids Engineer II

El Segundo, CA

$120k–$153k / year

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

Hermeus Aerodynamics Engineer

Los Angeles, CA

$92k–$140k / year

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

SpaceX Fire Protection Engineer

Hawthorne, CA

$100k–$160k / year

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

Rocket Lab Propulsion Intern Spring 2027

Long Beach, CA

$58k / year

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

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Frequently asked questions

How many mechanical & physical systems jobs are in Los Angeles?: There are currently 788 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.