Antares: Designing and manufacturing microreactors for defense and space missions.
2+ YOEBachelor's in mechanical/aerospace/nuclear or related field, 2+ years engineering experience in thermal/heat transfer systems, experience with COMSOL or ANSYS, thermal modeling, heat pipe design, high‑temperature systems experience preferred.
Senior Principal Mechanical Engineer, Platform Integration
El Segundo or Los Angeles
$205k-$245k/yrOnsiteFull Time
CHAOS Industries: Develops advanced radar and sensing systems for modern defense.
11+ YOEBachelor's in Mechanical Engineering, 11+ years platform-level mechanical design and integration experience for aerospace/defense, SolidWorks and FEA familiarity, military standards knowledge, and ability to obtain a U.S. security clearance.
Principal Mechanical Engineer, Platform Integration
El Segundo or Los Angeles
$175k-$215k/yrOnsiteFull Time
CHAOS Industries: Develops advanced radar and sensing systems for modern defense.
8+ YOEBachelor's in Mechanical Engineering, 8+ years platform-level mechanical design and system integration for aerospace/defense, SolidWorks proficiency, structural/thermal analysis (hand calculations/FEA), MIL-STD-810 familiarity, prototyping skills, ability to obtain U.S. security clearance.
Irvine or Palo Alto or Redmond or Bastrop or Cape Canaveral or Hawthorne or McGregor or Brownsville or Memphis
$30-$40/hrOnsiteInternship
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
0.25+ YOEMust be enrolled in a bachelor's or graduate program, 3+ months software/hardware/chip experience, U.S. eligibility per ITAR, able to work onsite full time for ≥12 weeks starting Jan or Mar 2027.
CHAOS Industries: Develops advanced radar and sensing systems for modern defense.
11+ YOEBachelor's in Mechanical Engineering, 11+ years platform-level mechanical design and system integration for aerospace/defense, SolidWorks and FEA familiarity, ruggedized hardware and MIL-STD-810 experience, ability to obtain U.S. security clearance.
Inversion Space: Building autonomous re-entry vehicles for global space-to-Earth cargo delivery.
5+ YOEAbility to perform CFD and thermal analysis for rocket propulsion systems; bachelor's in aerospace/mechanical engineering; 5+ years fluid analysis experience; able to obtain U.S. government security clearance.
3+ YOEABET-accredited bachelor's in electrical/computer engineering required, 3–5 years power systems experience, knowledge of protective relaying, SCADA, and power system studies; EIT preferred.
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
9+ YOEBachelor's in engineering or related field; 9+ years CAD/analyses experience; US citizenship and ability to obtain security clearance; experience with thermal/structural/dynamics/vibration or PCB design/assembly.
Stealth Space Startup: Building a space-based network for enterprise data transport.
Thermal design and analysis for optical terminals and flight payloads; thermal stability/STOP reasoning; electronics and high-power cooling; hands-on thermal test and model correlation; degree in mechanical/aerospace/physics and modeling skills.
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
6+ YOEDesign and develop cryogenic mechanical hardware for quantum computing; strong experience in 3D CAD, FEA, and cryogenic engineering; cross-functional collaboration.
3D CAD (SolidWorks), Finite Element Analysis (Thermal, Mechanical, EM), Ansys, COMSOL, Cryogenic hardware design
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
10+ YOE3+ MgmtBachelor's in engineering-related field,10+ years CAD experience,experience in thermal/structural/vibration analysis or PCB design,CAD and FEA tool proficiency,ability to obtain U.S. Top Secret clearance.
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
10+ YOEBachelor's in engineering or related field,10+ years CAD experience,experience in thermal/structural/PCB design,ability to obtain U.S. Top Secret clearance and meet export-control U.S. Person requirement.
CHAOS Industries: Develops advanced radar and sensing systems for modern defense.
8+ YOEBachelor's in Mechanical Engineering, 8+ years platform-level mechanical design and system integration for aerospace/defense, SolidWorks and FEA experience, prototyping skills, MIL‑STD familiarity, and ability to obtain a U.S. security clearance.
Hawthorne or El Segundo or Los Angeles or Washington or San Francisco or San Diego or Seattle or London
$160k-$260k/yrOnsiteFull Time
CHAOS Industries: Develops advanced radar and sensing systems for modern defense.
10+ YOEBachelor's in Mechanical Engineering, 10+ years mechanical design and system integration experience in aerospace/defense, launcher design experience, CAD and FEA proficiency, electro-mechanical integration, MIL-STD familiarity, ability to obtain U.S. security clearance.
Senior, Thermo-Mechanical Design Engineer - Reactor Cavity Cooling Systems
Torrance or Los Angeles
$140k-$185k/yrOnsiteFull Time
Antares: Designing and manufacturing microreactors for defense and space missions.
5+ YOEBachelor's in engineering with thermal-fluid emphasis, 5+ years designing thermal-fluid/ HVAC/ cooling systems, experience performing thermal, fluid, and structural analyses, strong multidisciplinary communication and technical leadership.
El Segundo or Los Angeles or Washington or San Francisco or San Diego or Seattle or London
$170k-$240k/yrOnsiteFull Time
CHAOS Industries: Develops advanced radar and sensing systems for modern defense.
10+ YOEBachelor's in Mechanical Engineering, 10+ years mechanical design/integration for electronic hardware in aerospace/defense, strong CAD (SolidWorks), GD&T, FEA/thermal analysis experience, and ability to obtain U.S. security clearance.
Keysight TechnologiesNew York Stock Exchange: KEYS: Manufactures hardware and software for electronic test and measurement.
Hands-on experience with superconducting quantum hardware and microwave/RF design, EM/circuit simulation expertise, Python/C++ automation skills, and advanced degree or equivalent industry experience.
ADS, EMPro, HFSS, CST, COMSOL, QuantumPro, ADS Quantum Layout, Quantum Circuit Simulation, Quantum System Analysis, Python, C++