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222 materials engineer jobs at 100 companies in Simi Valley, CA

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Materials Engineer II
Torrance, California, United States
$115k-$150k/yr OnsiteFull Time
Antares
Antares: Designing and manufacturing microreactors for defense and space missions.
2+ YOEBachelor's in materials/mechanical engineering, 2+ years materials engineering experience, proficiency in optical/electron microscopy and mechanical property evaluation, materials characterization and failure analysis.
optical microscopy, electron microscopy
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1mo
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Sr. Materials Engineer, Materials Laboratory
Hawthorne, California, United States
$135k-$190k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
5+ YOEBachelor's in materials or related field, 5+ years materials lab engineering experience, hands-on with mechanical/thermal/characterization testing, proficiency with Python or MATLAB, experience with SEM/EDS/XRD/TGA/DSC/DMA/Gleeble, ability to lift 25 lbs and work extended hours/weekends.
Python, MATLAB, SEM, EDS, XRD, FTIR, spark OES, pycnometer, TGA, DSC, DMA, Gleeble, ASTM, ISO
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1mo
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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 amplification products.
4+ YOEBachelor's degree in Materials/Mechanical/Chemical Engineering, 4+ years experience (levels up to 9 years), expertise in welding/brazing/soldering, chemical cleaning and plating, lab testing (SEM, XPS, DSC, XRF, X‑Rays), and ability to write specifications and train operators.
Laser, TIG, Resistance, Gas Tungsten Arc Welding (GTAW), Laser Welding, Brazing, Soldering, SEM, XPS, microscopy, DSC, XRF, X-Rays, Microsoft Office
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1w
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2026-2027 Facilities Engineering Materials Engineer
Houston or Pasadena or Pascagoula or Richmond or El Segundo or Salt Lake City
$108k-$136k/yr OnsiteFull Time
Chevron
ChevronNYSE: CVX: Global energy producing oil, gas, and petrochemicals.
0+ YOECandidates completing a Bachelors/Masters/Doctorate in Metallurgical, Materials or Corrosion Engineering or graduates with ≤2 years related experience; strong academics, communication, teamwork and problem-solving skills.
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1w
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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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3mo
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Senior Materials Engineer (Metal 3D Printing)
Hawthorne, California, United States
$125k-$200k/yr OnsiteFull Time
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
7+ YOEBachelor’s in materials science/engineering or related; 7+ years metals experience; expertise in metallurgical prep techniques.
R, JMP, Minitab, Laser Powder Bed Fusion, Additive Manufacturing
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2mo
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Energetic Materials Engineer, Solid Propellant
Los Angeles, California, United States
OnsiteFull Time
Furientis
Furientis: Develops cost-effective, high-volume interceptor missile systems.
5+ YOEB.S. or M.S. in chemistry/chemical engineering/materials + 5+ years hands-on composite-propellant formulation and mix/process development with at least one propellant taken through motor flight/qualification; experience with mixers, burn-rate testing, thermochemistry codes, supplier qualification; U.S. Person.
Claude Code, Codex, OpenCode
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1mo
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Materials and Process Engineer I
Long Beach, California, United States
$85k-$115k/yr OnsiteFull Time
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
1+ YOEBachelor's in engineering, 1+ year materials testing lab experience (metal additive manufacturing preferred), hands-on mechanical testing or metallography, ability to develop/qualify test methods, perform root cause analysis, and present technical findings.
tensile tester, compression tester, fatigue tester, Optical microscope, electron microscope, CAD, ASTM, ISO
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Materials and Process Engineer 3/4
Woodland Hills, California, United States
$104k-$194k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
5+ YOEExperience in metallurgy, materials testing, and manufacturing processes; active US Secret clearance; 5+ years engineering experience with STEM bachelor's; hands-on lab and supplier support experience.
SEM, NDT, NDI
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1mo
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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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Manager, Stage Materials & Processes Engineering
Long Beach, California, United States
$150k-$224k/yr OnsiteFull Time
Relativity Space
Relativity Space: Designing and manufacturing 3D-printed rockets and launch vehicles.
6+ YOE2+ MgmtBachelor's in materials science/engineering or related field,6+ years materials & process engineering experience,2+ years leading technical teams,proficiency in M&P qualification,failure analysis,and experimental design.
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1mo
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Materials and Process Engineer I
El Segundo, California, United States
$63k-$120k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
0+ YOEUniversity degree or equivalent and typically less than 2 years relevant experience; experience with wet chemistry and lab equipment (microscopes, viscometer, mixers, Instron); knowledge of OSHA/Cal-OSHA and hazardous materials handling; U.S. citizenship required.
microscopes, viscometer, mixers, Instron, FTIR, ICP, DSC, DMA, GC, TGA, Microsoft Office
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3mo
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Electronics Parts, Materials, and Processes Engineer - Advanced Packaging
El Segundo or Chantilly
$117k-$176k/yr OnsiteFull Time
The Aerospace Corporation
The Aerospace Corporation: Provides technical expertise and research for national space programs.
8+ YOEBachelor’s in materials science, electrical engineering, or related; 8+ years engineering experience; proficiency in advanced semiconductor packaging; PMP standards; ability to obtain TS/SSBI clearance.
MS Project, Jira, advanced semiconductor packaging, PMP standards
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3w
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Materials Scientist
Burbank, California, United States
$115k-$130k/yr OnsiteFull Time
PPG
PPGNYSE: PPG: Manufacturer of paints, coatings, and specialty materials.
Ph.D. in materials-related field required, US citizen or permanent resident, hands-on materials engineering and formulation development (60-70% lab), experience commercializing products; 3+ years materials formulation experience desirable.
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1mo
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Materials Program Manager
Los Angeles or Mesa
OnsiteFull Time
Hadrian
Hadrian: Building autonomous factories for aerospace and defense manufacturing.
3+ YOEBachelor's in supply chain/operations/engineering, 3+ years in material program/planning or supply chain, MRP/ERP experience, advanced Microsoft Excel; strong analytical, communication, and BOM/multi-tier experience.
MRP, ERP, Microsoft Excel, SQL, Power BI
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2mo
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Materials Scientist — Organic Crystal Growth & Process Engineering
Pasadena, California, United States
$154k-$217k/yr OnsiteFull Time
Meta
MetaNASDAQ: META: Develops social networking platforms and virtual reality technologies.
3+ YOEPhD in chemical/ materials science or related field; 3+ years experience; strong materials development and characterization background.
COMSOL Multiphysics, Ansys Fluent, Siemens FLOEFD/StarCCM+, NX, SolidWorks, CNC machining, 3D printing, NMR, GC/MS, LC/MS, SEM, AFM, XRD, DSC, TGA
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1mo
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Sr Materials Mgmt Analyst
Torrance, California, United States
$94k-$117k/yr OnsiteFull Time
Honeywell International
Honeywell InternationalNASDAQ: HON: Designs and manufactures technologies for aerospace, buildings, and industry.
5+ YOE5+ years in manufacturing operations or supply chain; US citizen; Bachelor’s degree; project management experience; skilled with MRP/ERP systems
MRP/ERP systems
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2mo
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Robotics Engineer: Process
Carson, California, United States
$80k-$150k/yr OnsiteFull Time
GrayMatter Robotics
GrayMatter Robotics: Develops autonomous robotic systems for industrial surface finishing applications.
1+ YOEBachelor's degree in Mechanical Engineering, Materials and Process Engineering, Materials Science, or related field; 1+ year manufacturing process development experience; strong materials science knowledge; analytical and collaborative skills; U.S. work authorization.
CAD
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2mo
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Senior Solar Process Engineer
Los Angeles, California, United States
$100k-$140k/yr OnsiteFull Time
K2 Space
K2 Space: Develops high-power satellite platforms for heavy-lift launch vehicles.
2+ YOEBachelor's degree in materials science, chemical/ mechanical engineering, physics, aerospace; 2+ years in materials and process engineering; proven material/process decisions for high-reliability hardware.
Python, MATLAB, SEM, EDS, FTIR, DSC, TGA, XRD
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3mo
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Test Engineer
Los Angeles, California, United States
$115k-$180k/yr OnsiteFull Time
Hermeus
Hermeus: Develops high-speed and hypersonic aircraft for defense and transportation.
Bachelor’s degree in mechanical or aerospace engineering; industry experience owning a project lifecycle; strong knowledge of fluid mechanics, heat transfer, mechanics of materials, and mechanical design.
NX CAD
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