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Radiant

Mechanical Engineer, Fluid Systems

El Segundo, CA, USA

USD 107,500-150k / year + Equity

4 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
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about Mechanical Engineer, Fluid Systems at Radiant
Castelion

Mechanical Engineer Fall 2026 Co-Op

torrance, ca, usa

USD 30-30 / hour

5 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
11 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

11 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

11 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
Radiant

Mechanical Professional Engineer (PE)

El Segundo, CA, USA

USD 158k-219,450 / year + Equity

11 days
Senior
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 Professional Engineer (PE) at Radiant
Arbor Energy

Sr. Mechanical Engineer - Turbomachinery

El Segundo, CA, USA

USD 150k-175k / year + Equity

13 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

11 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

18 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

18 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
19 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
19 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
19 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
19 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
19 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
Astranis

Mechanical Engineer Intern (Fall 2026)

San Francisco, CA, USA

USD 29-29 / hour

1 month
Series C+
Internship
Defense & Space
Government and Military
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about Mechanical Engineer Intern (Fall 2026) at Astranis
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
Castelion

Materials Engineer - High Temperature Composites

torrance, ca, usa
5 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
Prellis Biologics

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

Berkeley, CA, USA
12 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
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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

9 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