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

Radiant Senior Reactor Operations Engineer

El Segundo, CA

$134k–$185k / year

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

Anduril Industries Mechanical Engineer, Support System

Costa Mesa, CA

$129k–$171k / year

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

Impulse Space Opto-Mechanical Engineer (Analysis)

Redondo Beach, CA

$120k–$180k / year

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

SpaceX Sr. Mechanical Design Engineer (Starship Components)

Hawthorne, CA

$135k–$190k / year

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

Rocket Lab Mechanical Engineer II

Pasadena, CA

$101k–$139k / year

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

Relativity Space Staff Structures Engineer (Terran-R Vehicle)

Long Beach, CA

$164k–$246k / year

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

Blue Origin Sr. Manager, Engines Structural Loads & Dynamic Environments

Seattle, WA · Los Angeles, CA · Huntsville, AL

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

Radiant Senior Mechanical Engineer – Turbomachinery Rotordynamics

El Segundo, CA

$158k–$219k / year

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

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Anduril Industries Support System Lead, Maneuver Dominance

Costa Mesa, CA

$165k–$235k / year

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

Impulse Space Structural Dynamics Engineer

Redondo Beach, CA

$120k–$180k / year

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

SpaceX Mechanical Technician (Facilities)

Hawthorne, CA

$48k–$106k / year

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

Rocket Lab Principal Stage Fluids Engineer

Long Beach, CA

$162k–$270k / year

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

Relativity Space Staff Mechanical Engineer (Mechanisms)

Long Beach, CA

$164k–$246k / year

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

Blue Origin Fluids Analyst III – Fluids & Propulsion – Crew Lunar Lander

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

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

Anduril Industries Senior Mechanical Engineer, Intelligence Systems

Santa Ana, CA

$146k–$194k / year

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

SpaceX Compressed Air Technician (Facilities)

Hawthorne, CA

$48k–$106k / year

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

Rocket Lab Fluid Component Engineer II

Long Beach, CA

$101k–$139k / year

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

Relativity Space Vehicle Structures Engineer I - 2026 Graduate

Long Beach, CA

$90k–$136k / year

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

Blue Origin Thermal Analyst Sr. - ACE

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

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

Anduril Industries Senior Thermal Engineer, Mission Electronics

Costa Mesa, CA

$146k–$194k / year

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

SpaceX Mechanical Engineer, Flight Termination System (Starship)

Hawthorne, CA

$100k–$118k / year

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

Rocket Lab Propulsion Design Engineer II

Long Beach, CA

$101k–$151k / year

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

Relativity Space Manager, Propulsion Analysis

Long Beach, CA

$160k–$240k / year

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

Blue Origin MK1 Fluids Analyst III - Lunar Permanence

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

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

Anduril Industries Staff Materials Engineer, Design Allowables & Materials Data

Costa Mesa, CA

$166k–$220k / year

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