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

SpaceX Design Criteria Engineer (Falcon & Dragon)

Hawthorne, CA

$100k–$130k / year

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

Rocket Lab Spacecraft Propulsion Components Engineer I

Long Beach, CA

$82k–$123k / year

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

Relativity Space Senior Electro-Mechanical Engineer

Long Beach, CA

$132k–$198k / year

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

Blue Origin MK1 Fluids Analyst III - Lunar Permanence

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

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

Radiant Senior Stress Engineer

El Segundo, CA

$134k–$185k / year

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

Rivian Sr. Staff NVH Integrations Engineer

Irvine, CA

$196k–$245k / year

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

General Matter Dynamics Engineer

Los Angeles, CA

$125k–$200k / year

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

Freeform Mechanical Engineer (New Grad December 2026)

Hawthorne, CA

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

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Anduril Industries Staff Mechanical Engineer, Manufacturing Automation

Costa Mesa, CA

$166k–$220k / year

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

K2 Space Senior Mechanisms Engineer – Fluids & Pumps

Los Angeles, CA

$140k–$175k / year

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

Castelion Senior Thermal Engineer

Torrance, CA

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

Impulse Space Lead, Spacecraft Mechanisms

Redondo Beach, CA

$140k–$180k / year

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

Fluidstack Mechanical Engineer, 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 Staff Mechanisms Engineer

Playa Vista, CA

$161k–$221k / year

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

Varda Space Mechanisms & Payload Internship - Spring 2027

El Segundo, CA

$69k / year

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

Hermeus F100 MRO

Los Angeles, CA · Atlanta, GA · Jacksonville, FL

$92k–$187k / year

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

SpaceX Sr. Propulsion Analyst, Chamber and Nozzle (Raptor)

Hawthorne, CA

$135k–$215k / year

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

Rocket Lab Combustion Devices Intern Spring 2027

Long Beach, CA

$58k / year

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

Relativity Space Staff Mechanisms Engineer

Long Beach, CA

$164k–$246k / year

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

Radiant Senior Thermal Modeling & Analysis Engineer

El Segundo, CA

$140k–$225k / year

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

Rivian Senior Vehicle Dynamics Engineer

Irvine, CA

$122k–$152k / year

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

General Matter Head of Process Engineering

Los Angeles, CA

$170k–$240k / year

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

Freeform Senior Design Engineer (Semiconductor Machinery Hardware)

Hawthorne, CA

$150k–$200k / year

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

Anduril Industries Robotics Engineer, Manufacturing Automation

Costa Mesa, CA

$115k–$171k / year

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

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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.