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82 materials process engineer jobs at 40 companies in Mission Viejo, CA

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Materials & Process Engineer
Torrance, California, United States
$85k-$165k/yr OnsiteFull Time
Stellant Systems
Stellant Systems: Manufacturer of radio frequency and microwave amplification products.
2+ YOEBachelor’s or postgraduate degree in materials, mechanical, chemical, or related engineering; 2–9+ years by level; welding, materials processing, laboratory testing, technical documentation, and problem-solving experience.
Laser Welding, TIG, Gas Tungsten Arc Welding (GTAW), Resistance Welding, SEM, XPS, microscopy, DSC, XRF, X-Rays, Microsoft Office
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2mo
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Materials & Process Engineer
Torrance, California, United States
$100k-$165k/yr OnsiteFull Time
Stellant Systems
Stellant Systems: Manufacturer of radio frequency and microwave power amplification products.
4+ YOEProvide engineering support for materials and joining processes including welding, brazing, soldering, cleaning, plating, and laboratory testing; develop specs, troubleshoot, and train operators.
SEM, XPS, microscopy, DSC, XRF, X-Rays, Microsoft Office
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3w
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Materials and Process Engineer
Torrance, California, United States
$105k-$160k/yr OnsiteFull Time
Robinson Helicopter
Robinson Helicopter: Designs and manufactures civil helicopters and uncrewed aerial systems.
Hands-on materials and process engineering for material selection, testing, failure investigation, process improvement, and compliance with 14 CFR Part 27.
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1mo
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Staff Materials and Process Engineer
Los Angeles, California, United States
OnsiteFull Time
Karman Industries
Karman Industries: Modular electric heat pumps for industrial thermal energy management.
5+ YOEB.S. in materials/mechanical engineering, 5+ years in materials selection/qualification/process development, experience with brazing/welding and test campaigns, hands-on manufacturing process development.
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2w
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Materials & Process (M&P) Engineer
El Segundo, California, United States
$130k-$165k/yr OnsiteFull Time
Space Kinetic
Space Kinetic: Developing propellant-free systems for deploying payloads in space.
3+ YOEBachelor's degree in a relevant engineering field and 3–7 years of materials and processes experience with spaceflight or high-reliability aerospace hardware, including metals, composites, thermal materials, and failure investigations.
NASA-STD-6016
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1mo
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Senior Materials & Process Engineer, Rocket Motor Systems
McHenry or Costa Mesa or Alabama or North Carolina
$113k-$149k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
5+ YOEBachelor's in materials/chemical/mechanical/aerospace engineering,5+ years M&P experience in aerospace/propulsion/defense,experience developing material and process specifications,materials characterization and testing,ability to obtain U.S. Top Secret clearance.
CMH-17, JANNAF, MIL-HDBK-17, NDI, X-ray, CT scan, ultrasonic, radiography, MIL-STDs, AIAA
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4w
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Senior Materials & Process Engineer (Metallurgy)
Torrance, California, United States
$141k-$194k/yr OnsiteFull Time
Divergent
Divergent: Develops digital manufacturing systems for complex vehicle structures.
5+ YOEBachelor's in materials or related field,5+ years executing material qualifications and working with hardware in manufacturing,experience with AMS/ASTM/MIL standards,ability to perform metallurgical evaluation and interpret aerospace/defense requirements,able to lift 25 lbs.
Teamcenter, NX
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2mo
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Principal/Sr Principal Materials and Process Engineer
El Segundo, California, United States
$104k-$193k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
5+ YOEUS Secret-clearable materials/process engineer with materials testing/qualification experience, STEM degree, Microsoft Office proficiency, and demonstrated troubleshooting and supplier/design interaction skills; travel up to 10%.
Teamcenter, JDL, Fibersim, Catia, Microsoft Office Suite
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1mo
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Senior Electrical Materials & Process Engineer
Huntington Beach, California, United States
$211k-$285k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
15+ YOEUS-person required. 15+ years PCB/PWB and assembly experience; bachelor\u0002s degree or equivalent; lead teams; develop/qualify materials, processes, specifications; conduct failure analysis and RCCA; support suppliers and labs.
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2mo
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Composites Materials and Process Engineer (US)
Anaheim, California, United States
$123k-$168k/yr OnsiteFull Time
Syensqo
SyensqoEuronext Brussels: SYENS: Develops specialty chemicals and advanced materials for global industries.
5+ YOEBachelor's in engineering or materials science required; 5+ years' experience in composites R&D, 2+ years reviewing composite part designs, 3+ years in composite materials/process R&D, aerospace industry experience, strong problem solving and communication.
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1mo
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Senior Electrical Materials & Process Engineer
Huntington Beach, California, United States
$177k-$285k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
15+ YOE15+ years PCB/PWB and PCB assembly experience, bachelor’s degree or equivalent, ability to obtain U.S. security clearance, lead teams, supplier qualification, failure analysis and RCCA, knowledge of IPC standards and ESD practices.
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1mo
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Materials Engineer, Additive Manufacturing
Hawthorne, California, United States
$100k-$140k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
1+ YOEBachelor's in materials or related engineering, 1+ year LPBF process development experience with nickel superalloys, experience with metallurgical characterization, fracture analysis, and additive manufacturing processes.
Scanning Electron Microscopy (SEM)
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Principal Materials and Process Engineer (Onsite)
Riverside, California, United States
$118k-$225k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
8+ YOESTEM degree with typically 8+ years experience (or advanced degree with 5+ years), U.S. Person required, experience leading complex M&P tasks, technical writing, supplier qualifications, and familiarity with composites/adhesives.
SAP, Teamcenter
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1mo
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Materials Engineer, Ceramics
Torrance, California, United States
$115k-$185k/yr OnsiteFull Time
Antares
Antares: Designing and manufacturing microreactors for defense and space missions.
2+ YOEBachelor's in engineering or physics-based field,2+ years materials experience,proficiency in optical and electron microscopy and mechanical testing,knowledge of TRISO/coating processes preferred,strong communication and regulatory awareness,ability to work long hours and weekends;U.S. eligibility per ITAR.
optical microscopy, electron microscopy
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2mo
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Senior Materials Engineer - Metals
Tustin or Plymouth or Normal
$99k-$123k/yr OnsiteFull Time
Rivian
RivianNASDAQ: RIVN: Designs and manufactures electric vehicles and charging networks.
5+ YOEMaster’s degree in materials/metallurgical/mechanical engineering, 5+ years in automotive product development, deep steel metallurgy, light-metal knowledge, hands-on microscopy and testing, familiarity with manufacturing and supplier processes, strong communication.
microscopy, formability testing, mechanical testing, corrosion evaluation, APQP, PPAP, DFMEA, PFMEA, CAE
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1w
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2026 Intern Conversion - Materials and Process Engineer I
Seattle or Van Horn or Denver or Huntsville or Florida or Arlington or Los Angeles or Longmont or Reston or United States
$75k-$114k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
Completed a 2026 Blue Origin internship; enrolled in or recently graduating from college; minimum B.S. in mechanical, aerospace, or astronautical engineering; strong communication and teamwork skills; U.S. work authorization required.
Defense Biometric Identification System (DBIDS)
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1mo
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Materials Engineer, Additive Manufacturing
Los Angeles, California, United States
$150k-$220k/yr OnsiteFull Time
Hadrian
Hadrian: Building autonomous factories for aerospace and defense manufacturing.
4+ YOEMaster's in materials or related field, 4+ years qualifying additive manufacturing processes (LPBF/DED), alloy knowledge, materials testing and metallurgical analysis, DOE and statistical analysis, ability to author specs and qualification docs.
MMPDS, NADCAP, AMS7000, AS9100, ASTM, AMS
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3mo
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Senior Process Engineer Solar
Los Angeles, California, United States
$140k-$175k/yr OnsiteFull Time
K2 Space
K2 Space: Develops high-power satellite platforms for heavy-lift launch vehicles.
5+ YOEBachelor’s in a technical field; 5+ years in materials/process engineering; experience with solar array processes and characterization.
SEM, EDS, FTIR, DSC, TGA, XRD, Python, MATLAB
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2mo
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PCB Process Engineer - Wet Process
Santa Ana, California, United States
$68k-$100k/yr OnsiteFull Time
Pioneer Circuits
Pioneer Circuits: A privately held U.S. manufacturer of high-performance flexible and rigid printed circuit boards serving aerospace and defense customers.
2+ YOEBachelor's in chemical engineering or materials science, 2+ years wet process engineering in PCB manufacturing, knowledge of PCB fabrication (rigid/flex/rigid-flex), ERP and Minitab proficiency, GD&T interpretation, OSHA/EPA compliance experience.
ERP, Minitab, E-Verify
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Materials Engineer (New Grad Summer 2027)
Hawthorne or Los Angeles or El Segundo
$95k-$120k/yr OnsiteFull Time
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
Bachelor's degree in a relevant ABET-accredited engineering field and hands-on metals characterization, processing, or sample preparation experience. Materials fundamentals and first-principles problem solving required.
SEM, Instron, R, JMP, Minitab, machine learning
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