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42 prototyping engineer jobs at 27 companies in Oxnard, CA

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Sr. Prototyping Architect, AWS Prototyping and AI Customer Engineering (PACE)
Seattle or Santa Clara or Santa Monica or San Francisco or San Diego
$154k-$208k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
7+ YOEExpertise in cloud architecture, 7+ years designing/implementing/consulting on applications and infrastructure; AWS certs preferred; strong software development and AI/prototyping experience.
AWS, Bedrock, SageMaker, Q Developer, Cursor, Kiro, Cline, Windsurf
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1mo
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Engineer, Manufacturing
Sylmar, California, United States
$101k-$120k/yr OnsiteFull Time
Mason
Mason: Designs and manufactures engineered control products and subsystems for aerospace and defense applications.
2+ YOEBachelor's in engineering, 2+ years manufacturing/design experience, CAD and analysis software familiarity, rapid prototyping and electronic packaging experience, LEAN experience, strong communication and project management skills, willingness to travel.
CAD, LEAN
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Senior Engineer – Mechanical Engineering
Simi Valley, California, United States
$101k-$153k/yr OnsiteFull Time
AeroVironment
AeroVironmentNASDAQ: AVAV: Designs and manufactures unmanned aircraft and tactical missile systems.
5+ YOEBachelor's in Mechanical or Aerospace Engineering,5+ years designing complex mechanical systems,prototyping and electro-mechanical experience,ASME drawing practices,Solidworks and Microsoft Office proficiency.
Solidworks, Microsoft Office
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Principal Mechanical Engineer
El Segundo or Los Angeles
$175k-$215k/yr OnsiteFull Time
CHAOS Industries
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.
SolidWorks, NASTRAN, ABAQUS, ANSYS, COMSOL
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Mechanical Engineer III
Camarillo, California, United States
OnsiteFull Time
HEICO
HEICONYSE: HEI: Manufactures specialty electronic components and niche aircraft parts.
3+ YOEBachelor's in Mechanical/Aerospace Engineering, minimum 3 years mechanical/electromechanical design experience, proficiency with CAD/FEA (SolidWorks preferred), GD&T knowledge, and strong interpersonal skills; hands-on prototyping and analysis experience.
CAD, FEA, SolidWorks, CNC
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Senior/Staff/Principal Hardware Engineer - Robotic Hardware
Los Angeles or Malibu or Santa Monica
$110k-$185k/yr OnsiteFull Time
Horizon Surgical Systems
Horizon Surgical Systems: AI-driven robotic systems for ophthalmic microsurgery
5+ YOEExperienced hardware engineer for robotic systems; BS+5/MS+3 years minimum in robot product development; PhD may substitute; strong CAD/analysis and hands-on prototyping.
SolidWorks, SolidWorks PDM, GD&T, Python, MATLAB, C/C++, PCB design, Electrical design
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Mixed Signal Electrical Engineer
El Segundo, California, United States
$140k-$180k/yr OnsiteFull Time
Space Kinetic
Space Kinetic: Developing propellant-free systems for deploying payloads in space.
7+ YOEBachelors in electrical engineering or related STEM, 7+ years electrical engineering experience (prototype/hardware preferred), analog/digital circuit and PCB design (Altium), embedded systems, lab test equipment experience, eligible for US government export/clearance.
Altium, C, oscilloscopes, multimeters, power supplies, logic analyzers
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2mo
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Senior Build Engineer
El Segundo, California, United States
$140k-$180k/yr OnsiteFull Time
The Advanced Manufacturing Company of America
The Advanced Manufacturing Company of America: Manufacturer of critical components for aerospace and defense platforms.
Own prototyping, manufacturing, DFx, tooling, and cross‑functional collaboration; CAD/PLM/GD&T experience; ITAR compliance; on-site in El Segundo.
CAD, PLM/PDM, GD&T, Materials & Processing
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Senior Antenna Engineer
Playa Vista, California, United States
$137k-$193k/yr OnsiteFull Time
Inversion Space
Inversion Space: Building autonomous re-entry vehicles for global space-to-Earth cargo delivery.
5+ YOEBachelor's in EE/Physics or related,5+ years antenna design/EM simulation and integration experience,ability to obtain US Top Secret clearance,proficiency with HFSS,CST,FEKO,antenna measurements and prototyping.
HFSS, CST, FEKO, Python, MATLAB
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Mechanical Engineer, Motor Design - 2026 New Graduate
El Segundo, California, United States
$95k-$105k/yr OnsiteFull Time
Radiant
Radiant: Designs and manufactures portable, mass-produced nuclear microreactors.
BS in mechanical engineering with electric motor specialization, knowledge of permanent magnet motors, experience in motor design/manufacture/assembly, CAD/NX proficiency, testing and prototyping experience, willing to work extended hours and weekends, must work onsite in El Segundo.
CAD, NX
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1mo
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Electrical Engineer-Prototype Design
Memphis or Pflugerville or Lakewood or Roanoke or Norfolk or Carlstadt or Santa Monica or Colorado Springs
$120k-$150k/yr OnsiteFull Time
Auto-Chlor System
Auto-Chlor System: Leases commercial dishwashers and provides chemical sanitation services.
5+ YOEBS in engineering or equivalent, 5+ years electrical/electronic design experience, embedded software/hardware experience, knowledge of NSF/CSA/UL and related codes, Autodesk Inventor preferred.
Autodesk Inventor
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Electrical Engineer-Prototype Design
Memphis or Pflugerville or Lakewood or Roanoke or Norfolk or Carlstadt or Santa Monica or Colorado Springs
$120k-$150k/yr OnsiteFull Time
Auto-Chlor System
Auto-Chlor System: Provider of commercial dishwashing systems and chemical sanitation solutions.
5+ YOEB.S. in engineering (or equivalent), 5+ years electrical/electronic design experience, embedded software/hardware experience, knowledge of NSF/CSA/UL and related codes, and Autodesk Inventor/CAD experience.
Autodesk Inventor
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2mo
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Electrochemical Reactor/Cell Engineer – Electro-Deposition: Cell and System Design
Los Angeles, California, United States
$100k-$130k/yr OnsiteFull Time
University of California, Los Angeles
University of California, Los Angeles: A public research university providing higher education and research.
5+ YOE5+ years in prototyping/operating electrochemical systems; hands-on electrochemical cells; electrodeposition; process modeling; strong electrochemistry and lab safety.
SolidWorks, AutoCAD, COMSOL, Ansys, ASPEN
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Senior Hardware Product Development Engineer
Seattle or Los Angeles or Washington or Studio City
$111k-$153k/yr RemoteFull Time
Conservation X Labs
Conservation X Labs: Develops technology and innovation to prevent human-induced mass extinction
5+ YOEBachelor's or Master's in EE/ME/CS (or portfolio), 5+ years hardware product development, embedded prototyping, PCB design, firmware and low-power systems, Python/C/C++/Bash expertise, manufacturing/DFM experience, ability to travel for fieldwork.
Python, C/C++, Bash
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Sr. Full Stack Engineer
Santa Monica, California, United States
$175k-$350k/yr RemoteFull Time
Tapcart
Tapcart: Platform for Shopify merchants to create mobile shopping apps.
5+ YOE5+ years engineering/product experience; demonstrated frontend, backend, and database skills; strong GitHub presence; experience designing AI agent orchestration and prototyping interaction patterns.
GitHub, Shopify
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2mo
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Naval Architect Intern
El Segundo, California, United States
$38-$46/hr OnsiteInternship
Oceanus Maritime Technologies: Building the operating platform for the modern maritime world.
Pursuing BS, MS, or PhD in Mechanical, Marine, Naval Architecture, Electrical Engineering, Mechatronics; hands-on prototyping; comfortable with hardware.
CAD, Simulation, Prototyping, Electrical harnessing, Cable routing
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AI Product Engineer, Internal Tools
Calabasas, California, United States
$110k-$130k/yr HybridFull Time
PlanetArt
PlanetArt: Provides a mobile platform for ordering personalized photo products.
Public portfolio required; build and ship AI-powered internal tools and prototypes using AI-assisted tools and modern web stacks; strong prompt engineering, UX instincts, and communication skills; bachelor's preferred.
Cursor, Claude Code, Codex, GitHub Copilot, ChatGPT, v0, JavaScript, TypeScript, React, Next.js, Python, APIs, databases, GitHub, OpenAI, Anthropic, Google Gemini, Retool, Supabase, Firebase, Vercel, Airtable, n8n, Zapier, Make, Figma
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Senior Design Engineer
Ventura, California, United States
$119k-$135k/yr HybridFull Time
Patagonia
Patagonia: Sells performance outdoor clothing, technical equipment, and organic food.
8+ YOE8+ years experience in apparel/equipment product development, advanced pattern making, prototyping, construction documentation, CAD and 3D tool proficiency, hands-on fabrication, and mentoring experience.
Adobe Illustrator, Optitex, Browzwear, Clo3D, SolidWorks, Rhino
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1mo
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Senior R&D Engineer
Camarillo, California, United States
$120k-$130k/yr OnsiteFull Time
SaniSure
SaniSure: Designs and manufactures single-use bioprocessing and fluid management systems.
7+ YOEBachelor's in engineering required (Master's preferred). 7+ years biotech/pharma manufacturing experience, 4+ years Single-Use Technology design, CAD (2D/3D), design controls, FMEA, prototyping/3D printing, validation, ISO 13485/ASME BPE knowledge.
CAD, Microsoft Office, FMEA, 3D printing
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Mechanical Engineering Intern (Fall: August - December)
El Segundo, California, United States
$3k-$5k/mo OnsiteInternship, Full Time
Rainmaker
Rainmaker: Provides cloud seeding services using drones and radar.
Proficiency in Solidworks and FEA, experience with 3D printing and prototyping, sheet metal fabrication preferred, ability to document designs and collaborate cross-functionally.
Solidworks, FEA, 3D printers
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