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76 hardware mechanical engineer jobs at 28 companies in Riverside, CA

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Mechanical Engineer-Federal
Irvine or Pittsburgh
$70k-$300k/yr OnsiteFull Time
Field AI
Field AI: Develops autonomous software brains for robots in unstructured environments.
Mechanical Engineer with CAD, FEA, and field-ready hardware experience.
SolidWorks, Finite Element Analysis, CAD, Thermal modeling tools
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Mechanical Engineer, Lead
Costa Mesa, California, United States
$191k-$253k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
7+ YOE3+ MgmtLead mechanical engineer with 7+ years of design and leadership experience; strong CAD, structures, thermal management, and hardware integration; BS/MS in Mechanical Engineering.
CAD, FEA, Thermal Management, Structures, Mechanisms, PLM, Solidworks, NX, GD&T
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Mechanical Design Engineer
Torrance or Los Angeles
$95k-$129k/yr OnsiteFull Time
Northwood Space
Northwood Space: Manufacturing ground stations and providing satellite communication infrastructure.
2+ YOEBachelor’s in Mechanical or Aerospace Engineering; 2-4+ years hardware design; concept to production; manufacturability; thermal, materials, and structural design.
Siemens NX, ANSYS
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2w
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Sr. Mechanical Engineer
Irvine, California, United States
$105k-$155k/yr OnsiteFull Time
Terran Orbital
Terran OrbitalNYSE: LMT: Manufactures modular spacecraft for aerospace and defense missions.
5+ YOEB.S. or M.S. in Mechanical/Aerospace Engineering,5+ years designing complex mechanical systems,experience with SolidWorks/Creo,GD&T (ASME Y14.5),hardware build/test experience,and U.S. citizenship with clearance eligibility.
SolidWorks, Creo
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1mo
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Principal Mechanical Engineer
El Segundo or Los Angeles or Washington or San Francisco or San Diego or Seattle or London
$170k-$240k/yr OnsiteFull Time
CHAOS Industries
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.
SolidWorks, NASTRAN, ABAQUS, ANSYS, COMSOL, CFD
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Engineer - Mechanical II
Altadena, California, United States
$99k-$139k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
2+ YOEB.S. in Mechanical/Aerospace Engineering,2+ years developing and testing complex hardware,mechanism design and hands-on prototyping,CAD and analysis proficiency,ability to lead development through product lifecycle,US work authorization required.
Autodesk Inventor, ANSYS
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LWIR Optical Hardware / Opto-Mechanical Engineer
Los Angeles, California, United States
OnsiteFull Time
Furientis
Furientis: Develops cost-effective, high-volume interceptor missile systems.
7+ YOE7+ years IR/precision optical hardware design and integration; B.S. in relevant field (M.S. preferred); proficiency with Zemax/Code V, SolidWorks/NX/Creo, optical metrology, athermal design, environmental qualification per MIL-STD-810; U.S. Person required.
Zemax, Code V, SolidWorks, NX, Creo, ASME Y14.5, GD&T, Fizeau, Twyman-Green, FRED, ASAP, TracePro, Claude Code, Codex, OpenCode, Kilo, SBC/SoM, MIL-STD-810
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Founding Mechanical Engineer
Los Angeles, California, United States
$135k-$215k/yr HybridFull Time
Pillar Space
Pillar Space: Building high-stakes, flight-grade autonomous space hardware systems.
2+ YOEBachelor's in mechanical/aerospace engineering, 2+ years designing and testing complex mechanical or electromechanical hardware, proficiency with professional CAD (NX, CATIA, Creo, SolidWorks), hand calculations, tolerance analysis and FEA, GD&T and ASME Y14.5 familiarity, hands-on prototyping experience.
NX, CATIA, Creo, SolidWorks, PLM
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Mechanical Engineer, Thermal Control Systems II
Long Beach, California, United States
$112k-$159k/yr OnsiteFull Time
Vast
Vast: Develops and operates commercial artificial-gravity space stations.
5+ YOEBachelor's in mechanical engineering; 5+ years hardware experience with fluid systems; design, fabrication, testing experience.
NX, GD&T, ANSYS, FEMAP
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Mechanical Engineer - Avionics Integration
Huntington Beach, California, United States
$105k-$180k/yr OnsiteFull Time
Mach Industries
Mach Industries: Designs and manufactures autonomous unmanned aerial vehicles for defense.
2+ YOE2+ years mechanical engineering experience with avionics integration or electronics packaging; Bachelor's degree required; hands-on hardware development; experience with 3D CAD (NX or SolidWorks), EMI/EMC mitigation, and wire harness design.
NX, SolidWorks
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Sr. Mechanical Engineer
Irvine, California, United States
$150k-$175k/yr OnsiteFull Time
Neon Aero: Designs and builds AI-native aerospace hardware and flight systems.
8+ YOE8+ years in mechanical product development and production, strong Siemens NX, GD&T, and production release experience; leadership in mechanical systems design; hands-on hardware responsibility.
Siemens NX, GD&T, FEA, Python, MATLAB
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Senior Mechanical Engineer (Propulsion)
Los Angeles, California, United States
$150k-$187k/yr OnsiteFull Time
Apex
Apex: Mass-manufactures standardized satellite buses for commercial and government use.
8+ YOE8+ years mechanical/fluid hardware experience; propulsion design/analysis; CAD (NX); flight hardware qualification.
NX, CAD
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Staff Avionics Mechanical Engineer
Long Beach, California, United States
$150k-$226k/yr OnsiteFull Time
Relativity Space
Relativity Space: Designing and manufacturing 3D-printed rockets and launch vehicles.
7+ YOEBachelor's degree in Mechanical/Aerospace Engineering,7+ years mechanical design/thermal/packaging experience for aerospace or rugged electronics,proficiency with SolidWorks,NX and CAD,hardware lab testing and cross-functional communication.
CAD, SolidWorks, NX
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3mo
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Mechanical Design Engineer [Propulsion]
Long Beach, California, United States
OnsiteFull Time
Odys Aviation
Odys Aviation: Develops hybrid-electric vertical takeoff and landing aircraft.
4+ YOE4+ years in mechanical design of complex systems; BS or MS in Mechanical or Aerospace; NX CAD with GD&T; hands-on hardware experience; thermal management expertise.
NX, GD&T, FEA, CAD
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Electro-Mechanical Systems Engineer
Monrovia, California, United States
$70k-$110k/yr OnsiteFull Time
ChromoLogic
ChromoLogic: Develops and commercializes disruptive medical, aerospace, and security technologies.
Bachelor's or Master's in engineering, hands-on experience integrating mechanical/electrical/material systems, SolidWorks and FEA proficiency, ability to build and test hardware prototypes, strong problem-solving and documentation skills.
SolidWorks, FEA, CAD
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3w
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Manager, Mechanical Engineering
Pasadena, California, United States
$142k-$189k/yr OnsiteFull Time
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
8+ YOEDegree in Mechanical/Aerospace/Mechatronics/Robotics,8+ years mechanical engineering experience delivering high-reliability or spaceflight hardware,management experience,SolidWorks proficiency,and hands-on design, test, and integration skills.
SolidWorks
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Avionics Mechanical Engineer
Long Beach, California, United States
OnsiteFull Time
Orbital Operations
Orbital Operations: Develops high-thrust cryogenic vehicles for rapid-response orbital maneuvers.
3+ YOEBachelor's degree required, 3+ years experience in avionics/electrical/harness integration, hands-on with test hardware, scripting in Python, and strong cross-discipline communication.
Python, Capital, Zuken E3, Siemens NX, Altium, OrCAD, AutoCAD Electrical, Ethernet, CAN, RS-422/485, SPI, I²C, SpaceWire, MIL-STD-1553, IPC/WHMA-A-620, NASA-STD-8739, oscilloscope, digital multimeter, logic analyzer
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Senior Design Engineer (Advanced Energy Hardware)
Hawthorne or El Segundo or Los Angeles
$150k-$200k/yr OnsiteFull Time
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
5+ YOEBachelor's in mechanical engineering, 5+ years hands-on engineering experience in power or advanced energy industries, ability to lead hardware programs, expertise in turbomachinery/thermal/fluid/pressure-bearing hardware, strong communication and first-principles reasoning.
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4w
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Validation Engineer - Vehicle Hardware
Irvine, California, United States
$85k-$95k/yr OnsiteFull Time
Rivian
RivianNASDAQ: RIVN: Designs and manufactures electric vehicles and charging networks.
1+ YOEBachelor’s in Mechanical Engineering or related; 1+ years automotive validation or mechanical system experience; experience with strength/fatigue/durability testing, DVP&R, DFMEA, CAD, statistics; strong communication skills.
Microsoft Office, Google Workspace, Jira, Jama, Flow, Enovia, CAD
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Head of Hardware Development
Long Beach, California, United States
$165k-$245k/yr OnsiteFull Time
Long Wall
Long Wall: Develops containerized missile defense systems and hypersonic flight test vehicles.
8+ YOEBS in engineering, 8+ years hardware development experience with people-management; proven record taking flight-critical hardware from concept through qualification; technical fluency in mechanical design, GD&T, FEA tools, CAD/PLM; US person required.
ANSYS, ABAQUS, NASTRAN, NX, CATIA, CREO/Pro-E, Teamcenter, Windchill
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