Jobs/Roles/Mechanical & Physical Systems

Mechanical & Physical Systems Jobs

Mechanical, aerospace, and physical-systems engineering roles at hard-tech companies.

2,540 open roles · Updated Sep 22, 2026

2,540 jobs

CesiumAstro Principal CAD Designer

El Segundo, CA

$101k–$121k / year

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

Ursa Major Senior Propulsion Engineer, Combustion Devices

Berthoud, CO

$121k–$152k / year

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

Cowboy Space Corporation Fluids Engineer Level 1

Kent, WA · Washington, D.C.

$100k–$135k / year

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

Singularity Mechanical Design Engineer (Structures) Level 2

Gardena, CA

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

Boom Supersonic Turbomachinery Structural Analysis Engineer

Centennial, CO

$107k–$144k / year

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

Harmattan AI Mechatronics Engineering Intern

France

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

CHAOS Industries Senior Staff Mechanical Engineer

El Segundo, CA

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

Fluidstack Structural Engineer, Modular R&D

Austin, TX · New York, NY · San Francisco, CA · Los Angeles, CA · Seattle, WA

$164k–$206k / year

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

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Commonwealth Fusion Mechanical Engineer – Cable Magnets

Devens, MA

$90k–$145k / year

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

Inversion Staff Aerothermal CFD Methods Engineer

Playa Vista, CA

$161k–$221k / year

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

Varda Space Senior Mechanisms Engineer - Payloads

El Segundo, CA

$140k–$179k / year

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

SpaceXAI Director, Memphis Power Plant Operations

Southaven, MS

Job type: Mechanical & Physical Systems
Seniority: Director
Sector: AI Research

Slate Auto Principal Vehicle Safety Engineer

Troy, MI

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

Hermeus Senior Mechanisms Engineer

Los Angeles, CA

$139k–$187k / year

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

Rivan Materials Engineer

United Kingdom

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

Antares Mechanical Engineer - Electronics Packaging

Los Angeles, CA

$115k–$190k / year

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

Firefly Aerospace Mechanical Engineer IV (Spacecraft Mechanisms)

Cedar Park, TX

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

SpaceX Civil Engineer, Land Development (Starbase Infrastructure - Louisiana)

Remote · Pecan Island, LA

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

Rocket Lab Aerodynamics Analyst

New Zealand

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

Relativity Space Vehicle Mechanisms Engineer I - 2026 Graduate

Long Beach, CA

$90k–$136k / year

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

Nvidia Senior Mechanical Engineer

Taiwan

Job type: Mechanical & Physical Systems
Seniority: Senior
Sector: Compute & Semiconductors

Blue Origin Fluids Operations Integrator - II

Kent, WA · Space Coast, FL · Denver, CO

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

Aalo Atomics Senior/Principal Finite Element Analyst - Thermomechanical & Structural Mechanics

Idaho Falls, ID · Austin, TX

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

Fervo Energy Process Safety Internship

Houston, TX

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

Rivian Engineering Intern - Product Development Systems (Spring 2027 Co-Op)

Torrance, CA

$79k–$94k / year

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

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How many mechanical & physical systems jobs are on BuildList?: There are currently 2,540 open mechanical & physical systems roles listed on BuildList, refreshed hourly straight from company career pages.
What kinds of companies are hiring mechanical & physical systems?: Ambitious, fast-growing companies building the future — across AI, defense, aerospace, robotics, energy, and more. You can filter the list by sector, company stage, experience level, and location.
Are there remote mechanical & physical systems jobs?: Yes. Use the location filter, or open the remote view for this role to see only fully-remote mechanical & physical systems openings.
How do I apply for mechanical & physical systems jobs?: 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.