28 prototype engineer jobs at 22 companies in Mentone, CA
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Manufacturing Engineer
Victorville, California, United States
$85k-$170k/yr OnsiteFull Time
1+ YOE1+ years in mechanical engineering with focus on designing/prototyping mechanical systems; strong CAD (NX/SolidWorks); programming (Python, MATLAB, C++); Bachelor in Mechanical, Aerospace, or Electrical Engineering; hands-on hardware development experience.
NX, SolidWorks, Python, MATLAB, C++
6d
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Process Engineer
Rancho Cucamonga, California, United States
$80k-$90k/yr OnsiteFull Time
5+ YOE5+ years engineering experience; strong mechanical/electromechanical design and manufacturing process skills; hands-on prototyping, machining, and maintenance; ability to lift 50 lbs; good communication and teamwork.
Autodesk Fusion 360, G-code, Arduino, Raspberry Pi, 3D Printing
1mo
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Design Engineer
Aliso Viejo, California, United States
$82k-$103k/yr OnsiteFull Time
1+ YOEDegree in engineering or industrial design or equivalent experience, 1–3 years product design experience, CAD and prototype experience, proficiency with Microsoft Office, strong communication and collaboration skills.
CAD, SolidWorks, Microsoft Excel, Microsoft PowerPoint, Microsoft Word, Adobe Illustrator, Adobe InDesign, KeyShot, PhotoView 360, Alias, Rhino
1mo
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Senior Engineer, Special Projects
Irvine or Plymouth or Normal
$108k-$135k/yr OnsiteFull Time
Bachelor's in engineering or equivalent; hands-on prototype design and fabrication experience; CAD (Catia) proficiency; knowledge of vehicle systems, materials, and low-volume manufacturing; welding and machining skills a plus.
Catia, CAD
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Senior Mechatronics Engineer
Denver or Charleston or Phoenix or Houston or Reading or Baton Rouge or Monrovia
$135k-$199k/yr HybridFull Time
7+ YOEBachelor's in engineering, 7+ years mechatronics/robotics experience, expertise in CAD, embedded systems, PLCs, sensors, and programming (Python, C++, MATLAB); proven project leadership and prototype testing experience.
SolidWorks, AutoCAD, Python, C++, MATLAB, Simulink, ROS, Gazebo, Nvidia Isaac Sim, PLCs
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Mechanical Engineer II
Laguna Hills, California, United States
$80k-$100k/yr OnsiteFull Time
2+ YOEBachelor's in Mechanical Engineering with 2+ years experience (or advanced degree), skilled in mechanical design, 3D CAD modeling, prototyping, testing, design control in regulated industries, DOE exposure, and risk management.
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Principal Mechanical Engineer
Irvine, California, United States
$140k-$210k/yr OnsiteFull Time
8+ YOEBachelor's in Mechanical Engineering required; 8+ years in precision mechanical systems and vibration mitigation; SolidWorks and ANSYS (or equivalent) proficiency; FEA, modal analysis, GD&T, PLM/ERP (Agile, SAP); leadership and test/prototyping experience; travel <10%.
SolidWorks, ANSYS, FEA, CAD, PLM, ERP, Agile, SAP, GD&T, BOM
3w
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Product Development Engineer II
Rancho Santa Margarita, California, United States
$75k-$120k/yr OnsiteFull Time
5+ YOEBachelor's in Mechanical or Biomedical Engineering, 5+ years medical device or regulated industry experience, CAD/GD&T proficiency, DFM experience, prototype development, strong communication and technical writing.
CAD, GD&T, Product Lifecycle Management (PLM), Minitab
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Product Development Engineer II
Irvine, California, United States
$71k-$98k/yr OnsiteFull Time
3+ YOEBachelor's in Engineering, 3+ years medical device product development, SolidWorks and Microsoft Office proficiency, experience with prototyping, design for manufacturability, V&V testing, and knowledge of design controls and relevant standards.
SolidWorks, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Project, Minitab, Microsoft Visio
1mo
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OEM Sr. Product Design Engineer
Corona, California, United States
$120k-$140k/yr OnsiteFull Time
7+ YOEBachelor's in engineering, 7+ years OEM/high-volume product design experience, SolidWorks proficiency, DFM/DFMA and manufacturing process experience, prototype/testing and simulation knowledge.
SolidWorks, FEA, 3D printing, laser cutting
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Electro-Mechanical Systems Engineer
Monrovia, California, United States
$70k-$110k/yr OnsiteFull Time
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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Senior Systems Engineer, C2 Integration
Ashville or Irvine
$143k-$191k/yr OnsiteFull Time
6+ YOE6+ years post-grad engineering experience; hands-on prototyping, integration, automated test scripting (Python, MATLAB); systems design, test, and troubleshooting; eligible for U.S. Secret clearance; up to 25% travel; initial 6 months on-site in Irvine, CA.
Lattice OS, Python, MATLAB
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PCB Design Engineer
Foothill Ranch, California, United States
$115k-$145k/yr OnsiteFull Time
4+ YOE4+ years PCB design experience, proficiency with Altium Designer, multilayer PCB layout, analog/digital circuit knowledge, prototype bring-up, and lab test equipment.
Altium Designer, Draftsman, OutputJob, LTspice, Micro-Cap, Simulink, Gerber, Oscilloscope, Multimeter, Function Generator, Power Supply
2mo
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2026 Early Career System Hardware Design Engineer
Irvine, California, United States
$100k-$120k/yr OnsiteFull Time
0+ YOEBachelor's or Master's in EE/Computer Engineering, 0-2 years relevant hardware experience, foundation in circuit theory, hands-on schematic/PCB and prototype debugging, lab equipment use, and US work authorization without sponsorship.
Altium Designer, Cadence Allegro, OrCAD, oscilloscopes, multimeters, power supplies, spectrum analyzers, vector network analyzers, signal generators, logic analyzers
3w
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Mechanical Design and Manufacturing Engineer
Irvine, California, United States
$80k-$140k/yr OnsiteFull Time
3+ YOE3+ years mechanical design experience with composites, prototyping, FEA, CAD proficiency, manufacturability focus, ability to obtain US security clearance, and ability to lift 35 lbs.
SolidWorks, PLM, FEA, ASME Y14.5, CNC
2mo
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Enterprise Sales Engineer (Remote)
San Francisco or New York City or Palm Springs or United States
RemoteFull Time
5+ YOE5+ years in Sales/Systems/Forward Deployed Engineering at B2B SaaS or AI companies; strong technical fluency with APIs/JSON, system integrations, low-code prototyping, and customer-facing presentation skills.
Zapier, Retool, Make, Postman, APIs, JSON, Retrieval-Augmented Generation (RAG)
1mo
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Sr.Engineer-RISC
Irvine, California, United States
$100k-$120k/yr OnsiteFull Time
7+ YOE7+ years RISC and x86 hardware design and troubleshooting; experience with Arm/RISC-V; use of multimeter and oscilloscope; ability to read schematics and build prototypes; C and Linux familiarity; strong communication skills.
multimeter, oscilloscope, Linux, C, Arm, RISC-V, x86
1mo
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Director of Innovation Engineering
Karlskoga or Yorba Linda
$170k-$231k/yr OnsiteFull Time
10+ YOE10+ years engineering/R&D leadership experience, advanced degree in engineering or business, expertise in emerging technologies (e.g., AI/GenAI), experience with product development, prototyping, budgets, and Agile/DevOps methods.
AI/GenAI, Agile, DevOps
3w
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Staff Technologist, R&D TMTT
Irvine, California, United States
$81k-$114k/yr OnsiteFull Time
13+ YOEHigh school diploma, technical certification, or equivalent with 13+ years R&D/engineering lab or 15+ years technical experience; prototyping, testing, fabrication, CAD, strong documentation and problem-solving skills.
SolidWorks, Creo/ProE, calipers, micrometers, microscopes, tensile testers
2w
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Product Designer
Ontario, California, United States
OnsiteFull Time
3+ YOE3+ years product design experience with 2D/3D CAD, SolidWorks, prototyping, plastic injection molding, CNC and rapid prototyping; B.S. in Mechanical Engineering or technical equivalent; ability to build prototypes and work with firearms.
SolidWorks, PowerShape, DraftSight, Microsoft Excel, Microsoft Word, Microsoft PowerPoint, CAD, ERP, 3D printers, 3D scanner, CNC, Consew leather machine
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