On-site & Remote

Showing 197 jobs
Radiant

Mechanical Engineer, Fluid Systems

El Segundo, CA, USA

USD 107,500-150k / year + Equity

1 day
Mid-Senior Level
Alternative Energy Equipment
Clean Energy
Cleantech
Energy
Energy Efficiency
Energy Production
Energy Services
Energy & Utilities
Nuclear Electric Power Generation
Renewable Energy
Sustainability
Castelion

Mechanical Engineer Fall 2026 Co-Op

torrance, ca, usa

USD 30-30 / hour

2 days
Series B
Internship
Aerospace
Aerospace & Defense
Defense
Defense and Space Manufacturing
Defense & Space
Electronics
Engines
Government
Government and Military
Industrial Automation
Manufacturing
Manufacturing & Industrial
Military
National Security
Science and Engineering
Cache Energy

TES (Thermal Energy Storage) Mechanical Engineer

Champaign, IL, USA
8 days
Seed
Mid-Senior Level
Alternative Energy Equipment
Electrical Distribution
Energy
Energy Storage
Other Equipment
Power Grid
Renewable Energy Semiconductor Manufacturing
Radiant

Senior Mechanical Engineer, Fluid Systems

El Segundo, CA, USA

USD 158k-219,450 / year + Equity

8 days
Senior
Alternative Energy Equipment
Clean Energy
Cleantech
Energy
Energy Efficiency
Energy Production
Energy Services
Energy & Utilities
Nuclear Electric Power Generation
Renewable Energy
Sustainability
Radiant

Staff Mechanical Engineer, Fluid Systems

El Segundo, CA, USA

USD 200,500-314,475 / year + Equity

8 days
Senior
Alternative Energy Equipment
Clean Energy
Cleantech
Energy
Energy Efficiency
Energy Production
Energy Services
Energy & Utilities
Nuclear Electric Power Generation
Renewable Energy
Sustainability
Radiant

Mechanical Professional Engineer (PE)

El Segundo, CA, USA

USD 158k-219,450 / year + Equity

8 days
Senior
Alternative Energy Equipment
Clean Energy
Cleantech
Energy
Energy Efficiency
Energy Production
Energy Services
Energy & Utilities
Nuclear Electric Power Generation
Renewable Energy
Sustainability
Arbor Energy

Sr. Mechanical Engineer - Turbomachinery

El Segundo, CA, USA

USD 150k-175k / year + Equity

10 days
Senior
Clean Energy
Energy
Energy Efficiency
Environmental Services (B2B)
Hardware
Other Energy Services
Power Grid
Renewable Energy
Sustainability
Apex

Spacecraft Mechanisms and Actuators Engineer

Los Angeles, CA, USA

USD 120k-190k / year + Equity

8 days
Mid-Senior Level
Aerospace
Aerospace & Defense
Commercial
Defense and Space Manufacturing
Defense & Space
Manufacturing
Manufacturing & Industrial
Satellite
Science and Engineering
Apex

Senior Mechanical Engineer (Propulsion)

Los Angeles, CA, USA

USD 150k-187k / year + Equity

15 days
Senior
Aerospace
Aerospace & Defense
Commercial
Defense and Space Manufacturing
Defense & Space
Manufacturing
Manufacturing & Industrial
Satellite
Science and Engineering
Apex

Lead Mechanical Engineer, Structures

Los Angeles, CA, USA

USD 156k-214,500 / year + Equity

15 days
Senior
Aerospace
Aerospace & Defense
Commercial
Defense and Space Manufacturing
Defense & Space
Manufacturing
Manufacturing & Industrial
Satellite
Science and Engineering
Castelion

Senior Mechanical Design Engineer (ACS Systems)

rio rancho, nm, usa
16 days
Series B
Senior
Aerospace
Aerospace & Defense
Defense
Defense and Space Manufacturing
Defense & Space
Electronics
Engines
Government
Government and Military
Industrial Automation
Manufacturing
Manufacturing & Industrial
Military
National Security
Science and Engineering
Castelion

Senior Mechanical Design Engineer (Structures & Thermal Protection Integration)

rio rancho, nm, usa
16 days
Series B
Senior
Aerospace
Aerospace & Defense
Defense
Defense and Space Manufacturing
Defense & Space
Electronics
Engines
Government
Government and Military
Industrial Automation
Manufacturing
Manufacturing & Industrial
Military
National Security
Science and Engineering
Castelion

Senior Mechanical Design Engineer (RF Systems & Radomes)

rio rancho, nm, usa
16 days
Series B
Senior
Aerospace
Aerospace & Defense
Defense
Defense and Space Manufacturing
Defense & Space
Electronics
Engines
Government
Government and Military
Industrial Automation
Manufacturing
Manufacturing & Industrial
Military
National Security
Science and Engineering
Castelion

Senior Mechanisms Engineer

rio rancho, nm, usa
16 days
Series B
Senior
Aerospace
Aerospace & Defense
Defense
Defense and Space Manufacturing
Defense & Space
Electronics
Engines
Government
Government and Military
Industrial Automation
Manufacturing
Manufacturing & Industrial
Military
National Security
Science and Engineering
Castelion

Senior Mechanisms Engineer (TVC Actuation)

rio rancho, nm, usa
16 days
Series B
Senior
Aerospace
Aerospace & Defense
Defense
Defense and Space Manufacturing
Defense & Space
Electronics
Engines
Government
Government and Military
Industrial Automation
Manufacturing
Manufacturing & Industrial
Military
National Security
Science and Engineering
Astranis

Mechanical Engineer Intern (Fall 2026)

San Francisco, CA, USA

USD 29-29 / hour

1 month
Series C+
Internship
Defense & Space
Government and Military
Astranis

Mechanical Engineer - Associate Program (Fall 2026)

San Francisco, CA, USA
1 month
Series C+
Associate
Defense & Space
Government and Military
Prellis Biologics

Research Associate - Senior Research Associate, Cell Culture-Cell Line Development

Berkeley, CA, USA
9 days
Series C
Associate
3D Printing
Artificial Intelligence
Biopharma
Biotechnology
Discovery Platform
Drug Development
Health Care
Machine Learning
Manufacturing
Medical
MedTech
Other Healthcare Technology Systems
Science and Engineering
Technology
Therapeutics
Castelion

Materials Engineer - High Temperature Composites

torrance, ca, usa
2 days
Series B
Entry Level
Aerospace
Aerospace & Defense
Defense
Defense and Space Manufacturing
Defense & Space
Electronics
Engines
Government
Government and Military
Industrial Automation
Manufacturing
Manufacturing & Industrial
Military
National Security
Science and Engineering
Arbor Energy

Sr. Test Engineer (Gasification R&D)

San Bernardino, CA, USA

USD 150k-175k / year + Equity

6 days
Senior
Clean Energy
Energy
Energy Efficiency
Environmental Services (B2B)
Hardware
Other Energy Services
Power Grid
Renewable Energy
Sustainability