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.

789 open roles · Updated Sep 21, 2026

789 jobs

Astrolab Sr. Mechanical Engineer (Test & R&D)

Hawthorne, CA

$157k–$177k / year

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

Freeform Mechanical Engineer (New Grad Summer 2027)

Hawthorne, CA

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

Anduril Industries Senior Mechanical Engineer, Anduril Expeditionary Systems

Costa Mesa, CA

$150k–$194k / year

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

K2 Space Senior Optomechanical Engineer

Los Angeles, CA

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

Castelion Senior Materials & Process Engineer, Non-Metals

Torrance, CA

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

Impulse Space Development Test Engineer

Redondo Beach, CA

$100k–$120k / year

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

Fluidstack Mechanical Utilities, BTM R&D

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

$208k–$263k / year

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

Inversion Senior Propulsion and Energetics Analyst (Fluids)

Playa Vista, CA

$137k–$193k / year

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

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Varda Space Biologics Formulation Research Internship - Spring 2027

El Segundo, CA

$69k / year

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

Hermeus Lead Propulsion Component Engineer

Los Angeles, CA

$139k–$187k / year

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

SpaceX Mechanical Engineer (Starship Avionics)

Hawthorne, CA

$100k–$115k / year

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

Rocket Lab Spacecraft Propulsion Systems Engineer I

Long Beach, CA

$82k–$123k / year

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

Relativity Space Senior Mechanical Engineer (Mechanisms)

Long Beach, CA

$132k–$198k / year

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

Blue Origin Structural Engineer III - Thermal Hardware - Lunar Permanence

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

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

Radiant Senior Thermofluids Systems Engineer, Power Conversion

El Segundo, CA

$158k–$219k / year

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

Rivian Sr. Lead Chassis Engineer

Irvine, CA

$176k–$234k / year

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

General Matter Structural Design Engineer (SE) - Los Angeles

Los Angeles, CA

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

Freeform Materials Engineer (New Grad December 2026)

Los Angeles, CA

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

Anduril Industries Mechanical Engineer, Manufacturing Automation

Costa Mesa, CA

$115k–$171k / year

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

K2 Space Senior Mechanisms Engineer – Turbomachinery

Los Angeles, CA

$140k–$175k / year

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

Castelion Senior Tooling Engineer

Torrance, CA

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

Impulse Space Tooling/Ground Support Engineering Intern (Summer 2027)

Redondo Beach, CA

$62k / year

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

Fluidstack Mechanical Energy Storage, BTM R&D

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

$208k–$263k / year

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

Inversion Senior Dynamics Engineer

Playa Vista, CA

$137k–$193k / year

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

Varda Space Structures Engineering Internship - Spring 2027

El Segundo, CA

$69k / 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 789 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.