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Radiant

Mechanical Engineer, Fluid Systems - 2026 New Graduate

El Segundo, CA, USA

USD 105k-125k / year + Equity

2 days
Entry Level
Alternative Energy Equipment
Clean Energy
Cleantech
Energy
Energy Efficiency
Energy Production
Energy Services
Energy & Utilities
Nuclear Electric Power Generation
Renewable Energy
Sustainability
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about Mechanical Engineer, Fluid Systems - 2026 New Graduate at Radiant
Radiant

Mechanical Engineer, Fluid Systems

El Segundo, CA, USA

USD 107,500-150k / year + Equity

8 days
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
Read more
about Mechanical Engineer, Fluid Systems at Radiant
Castelion

Mechanical Engineer Fall 2026 Co-Op

torrance, ca, usa

USD 30-30 / hour

8 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
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about Mechanical Engineer Fall 2026 Co-Op at Castelion
Cache Energy

TES (Thermal Energy Storage) Mechanical Engineer

Champaign, IL, USA
14 days
Seed
Mid-Senior Level
Alternative Energy Equipment
Electrical Distribution
Energy
Energy Storage
Other Equipment
Power Grid
Renewable Energy Semiconductor Manufacturing
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about TES (Thermal Energy Storage) Mechanical Engineer at Cache Energy
Radiant

Senior Mechanical Engineer, Fluid Systems

El Segundo, CA, USA

USD 158k-219,450 / year + Equity

14 days
Senior
Alternative Energy Equipment
Clean Energy
Cleantech
Energy
Energy Efficiency
Energy Production
Energy Services
Energy & Utilities
Nuclear Electric Power Generation
Renewable Energy
Sustainability
Read more
about Senior Mechanical Engineer, Fluid Systems at Radiant
Radiant

Staff Mechanical Engineer, Fluid Systems

El Segundo, CA, USA

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

14 days
Senior
Alternative Energy Equipment
Clean Energy
Cleantech
Energy
Energy Efficiency
Energy Production
Energy Services
Energy & Utilities
Nuclear Electric Power Generation
Renewable Energy
Sustainability
Read more
about Staff Mechanical Engineer, Fluid Systems at Radiant
Arbor Energy

Sr. Mechanical Engineer - Turbomachinery

El Segundo, CA, USA

USD 150k-175k / year + Equity

16 days
Senior
Clean Energy
Energy
Energy Efficiency
Environmental Services (B2B)
Hardware
Other Energy Services
Power Grid
Renewable Energy
Sustainability
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about Sr. Mechanical Engineer - Turbomachinery at Arbor Energy
Apex

Spacecraft Mechanisms and Actuators Engineer

Los Angeles, CA, USA

USD 120k-190k / year + Equity

14 days
Mid-Senior Level
Aerospace
Aerospace & Defense
Commercial
Defense and Space Manufacturing
Defense & Space
Manufacturing
Manufacturing & Industrial
Satellite
Science and Engineering
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about Spacecraft Mechanisms and Actuators Engineer at Apex
Apex

Senior Mechanical Engineer (Propulsion)

Los Angeles, CA, USA

USD 150k-187k / year + Equity

21 days
Senior
Aerospace
Aerospace & Defense
Commercial
Defense and Space Manufacturing
Defense & Space
Manufacturing
Manufacturing & Industrial
Satellite
Science and Engineering
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about Senior Mechanical Engineer (Propulsion) at Apex
Apex

Lead Mechanical Engineer, Structures

Los Angeles, CA, USA

USD 156k-214,500 / year + Equity

21 days
Senior
Aerospace
Aerospace & Defense
Commercial
Defense and Space Manufacturing
Defense & Space
Manufacturing
Manufacturing & Industrial
Satellite
Science and Engineering
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about Lead Mechanical Engineer, Structures at Apex
Castelion

Senior Mechanical Design Engineer (ACS Systems)

rio rancho, nm, usa
22 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
Read more
about Senior Mechanical Design Engineer (ACS Systems) at Castelion
Castelion

Senior Mechanical Design Engineer (Structures & Thermal Protection Integration)

rio rancho, nm, usa
22 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
Read more
about Senior Mechanical Design Engineer (Structures & Thermal Protection Integration) at Castelion
Castelion

Senior Mechanical Design Engineer (RF Systems & Radomes)

rio rancho, nm, usa
22 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
Read more
about Senior Mechanical Design Engineer (RF Systems & Radomes) at Castelion
Castelion

Senior Mechanisms Engineer

rio rancho, nm, usa
22 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
Read more
about Senior Mechanisms Engineer at Castelion
Castelion

Senior Mechanisms Engineer (TVC Actuation)

rio rancho, nm, usa
22 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
Read more
about Senior Mechanisms Engineer (TVC Actuation) at Castelion
Castelion

Materials Engineer - High Temperature Composites

torrance, ca, usa
8 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
Read more
about Materials Engineer - High Temperature Composites at Castelion
Astranis

Mechanical Engineer - Associate Program (Fall 2026)

San Francisco, CA, USA
1 month
Series C+
Associate
Defense & Space
Government and Military
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about Mechanical Engineer - Associate Program (Fall 2026) at Astranis
Astranis

Mechanical Engineer Intern (Fall 2026)

San Francisco, CA, USA

USD 29-29 / hour

1 month
Internship
Aerospace
Aerospace & Defense
Communication Equipment
Connectivity
Defense & Space
Hardware
Internet
Internet Services
Mobile & Telecommunications
Other Communications and Networking
Satellite
Satellite Communication
Science and Engineering
Space Research and Technology
Technology
Telecommunications
Telecommunications Service Providers
Read more
about Mechanical Engineer Intern (Fall 2026) at Astranis
Prellis Biologics

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

Berkeley, CA, USA
16 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
Read more
about Research Associate - Senior Research Associate, Cell Culture-Cell Line Development at Prellis Biologics
Arbor Energy

Sr. Test Engineer (Gasification R&D)

San Bernardino, CA, USA

USD 150k-175k / year + Equity

12 days
Senior
Clean Energy
Energy
Energy Efficiency
Environmental Services (B2B)
Hardware
Other Energy Services
Power Grid
Renewable Energy
Sustainability
Read more
about Sr. Test Engineer (Gasification R&D) at Arbor Energy