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 20, 2026

788 jobs

Starpath Chemical / Materials Engineer – Space Solar

Hawthorne, CA

$125k–$160k / year

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

Endeavor Optical Networks Thermal Engineer - Payload & Optical Terminal

Culver City, CA

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

Arc Boats Marine Mechanical Engineer

Torrance, CA

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

Olympian Motors Mechanical Engineer/Designer

Los Angeles, CA · Costa Mesa, CA

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

Argo Space Propulsion Engineer

Los Angeles, CA

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

Heart Aerospace Electric Motor Design Engineer

Los Angeles, CA

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

Durin Senior Mechanical Engineer

El Segundo, CA

$150k–$180k / year

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

Hadrian Tooling Engineer, Forging

Los Angeles, CA

$100k–$175k / year

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

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Anduril Industries Mechanical Engineer, Anduril Expeditionary Systems

Costa Mesa, CA

$129k–$171k / year

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

K2 Space Senior Propulsion Mechanical Design Engineer

Los Angeles, CA

$140k–$175k / year

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

True Anomaly Thermal Engineer (II or III)

Denver, CO · Long Beach, CA

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

Castelion Structural Analysis Engineer

Torrance, CA

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

Impulse Space Test Technician (Avionics)

Redondo Beach, CA

$62k–$104k / year

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

Neros Lead Mechanical Engineer

Torrance, CA

$166k–$242k / year

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

Valar Atomics Turbomachinery Secondary Flow Engineer

Torrance, CA

$140k–$215k / year

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

CesiumAstro Senior Mechanical Engineer

El Segundo, CA

$118k–$142k / year

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

Harbinger Senior Product Integration Engineer (Mechanical/Automotive)

Garden Grove, CA

$140k–$160k / year

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

Singularity Sr Analysis Mechanical Engineer (Thermal, Structural)

Gardena, CA

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

Apex Space Propulsion Internship (Summer 2027)

Los Angeles, CA

$94k / year

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

Field AI BIM/VDC Engineer

Irvine, CA

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

CHAOS Industries Principal Mechanical Engineer

El Segundo, CA

$233k–$292k / year

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

Fluidstack Designer/Detailer (Mechanical/Structural), Modular 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 Aerodynamics Engineer

Playa Vista, CA

$137k–$193k / year

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

Varda Space Mechanisms Engineer - Payloads

El Segundo, CA

$105k–$139k / year

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

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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.