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

K2 Space Senior Mechanisms Engineer, Optical

Los Angeles, CA

$140k–$175k / year

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

Impulse Space Advanced Mission Concepts Engineer (Staff)

Redondo Beach, CA

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

Fluidstack Mechanical Engineer, Robotics

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 Structures Engineer II

Playa Vista, CA

$110k–$150k / year

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

Varda Space Manager, Crystallization Science

El Segundo, CA

$160k–$190k / year

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

Hermeus Mechanical Engineering Intern - Fall 2026

Los Angeles, CA

$52k–$69k / year

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

SpaceX Construction Engineer

Hawthorne, CA

$100k–$160k / year

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

Rocket Lab Propulsion Intern Summer 2027

Long Beach, CA

$58k / year

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

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Relativity Space Senior Mechanisms Engineer

Long Beach, CA

$132k–$198k / year

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

Blue Origin Thermal Protection System Lead - Lunar Permanence

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

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

Radiant Senior Thermal Modeling Engineer

El Segundo, CA

$140k–$225k / year

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

Rivian Sr. Fluid Dynamics, Attributes Engineer

Irvine, CA

$122k–$152k / year

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

General Matter Mechanical Engineer (PE) - Los Angeles

Los Angeles, CA

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

Freeform Senior Design Engineer (Advanced Energy Hardware)

Hawthorne, CA

$150k–$200k / year

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

Anduril Industries Senior Mechanical Engineer, Manufacturing Automation

Costa Mesa, CA

$146k–$194k / year

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

K2 Space Principal Solar Design Engineer

Los Angeles, CA

$175k–$200k / year

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

Impulse Space Vehicle Engineering Intern (Summer 2027)

Redondo Beach, CA

$62k / year

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

Inversion Senior Mechanical Engineer

Playa Vista, CA

$137k–$193k / year

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

Varda Space Aerodynamics and Flight Mechanics Engineer II

El Segundo, CA

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

Hermeus Propulsion Engineer Intern - Fall 2026

Los Angeles, CA

$52k–$69k / year

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

SpaceX Loads & Dynamics Engineer (Starfall)

Hawthorne, CA

$100k–$160k / year

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

Rocket Lab Fluid Component Intern Spring 2027

Long Beach, CA

$58k / year

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

Relativity Space Staff Engineer - Launch Fluids Engineering

Long Beach, CA

$150k–$226k / year

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

Blue Origin Thermal Hardware Engineer II - Lunar Permanence

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

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

Radiant Senior Nuclear Thermal-Hydraulics Engineer

El Segundo, CA

$140k–$197k / year

Job type: Mechanical & Physical Systems
Seniority: Senior
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.