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.

787 open roles · Updated Sep 20, 2026

787 jobs

Rocket Lab Spacecraft Mechanical Engineer II

Long Beach, CA

$101k–$126k / year

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

Blue Origin Mk1 Senior Passive Thermal Hardware Engineer

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

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

Radiant 2027 New Graduate - Materials Engineer

El Segundo, CA

$105k–$130k / year

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

Swarm Aero Lead Structures Design Engineer

Oxnard, CA

$180k–$300k / year

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

Rivian Sr. CAE Engineer - Vehicle Hardware Engineering Integration & Automation

Irvine, CA

$122k–$152k / year

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

Hermeus Build Engineer

Los Angeles, CA

$92k–$140k / year

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

Antares Mechanical Engineering Design Intern - Summer 2027

Los Angeles, CA

$71k / year

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

AMCA Senior/Principal Design Reliability Engineer

El Segundo, CA

$150k–$225k / year

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

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Shinkei Systems Mechanical Engineering Intern/Associate Engineer

El Segundo, CA

$46k–$67k / year

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

General Matter Materials & Process Engineer

Los Angeles, CA

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

Vast Emerging Talent - Mechanical/Aerospace Engineering Internship

Long Beach, CA

$73k–$87k / year

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

Divergent Senior/Staff Mechanical Engineer, Factory Automation

Torrance, CA

$96k–$204k / year

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

Astrolab Rover Navigation/Localization Engineer

Remote · Hawthorne, CA

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

Cambium USA Sr. Scientist, Synthetic Chemistry

El Segundo, CA

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

Observable Space Sr. Opto-Mechanical Engineer, Photonics

Los Angeles, CA · Detroit, MI

$140k–$170k / year

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

Mach Industries May 2027 New Graduate Engineer, Vehicle Performance

Huntington Beach, CA

$115k–$130k / year

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

Salient Motion Staff Responsible Engineer

Torrance, CA

$120k–$140k / year

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

GITAI Senior Mechanical Engineer, Interceptor

Los Angeles, CA

$155k–$200k / year

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

Freeform Mechanical Engineering Intern (Spring 2027)

Hawthorne, CA

$62k / year

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

General Galactic Propulsion Engineer

El Segundo, CA

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

Vital Lyfe Senior Mechanical Engineer

Torrance, CA

$140k–$170k / year

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

Tiberius Aerospace GNC Engineer

Orange County, CA

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

Outpost Space Senior Mechanical Engineer

Los Angeles, CA

$210k–$235k / year

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

GrayMatter Robotics Staff Design Engineer

Los Angeles, CA

$135k–$250k / year

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

Furientis Mechanical Engineer

Los Angeles, CA

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 787 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.