19 mechanical process engineer jobs at 14 companies in Lancaster, CA
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Process Engineer
Charlotte or Philadelphia or Camden or Los Angeles or Oraison or Mumbai or Seoul or Asia or Australia
OnsiteFull Time
5+ YOERequires 5–10 years as a process, chemical, or mechanical engineer, a bachelor's degree in engineering, PLC and batch-processing experience, continuous improvement, and PSM knowledge.
Microsoft Office Suite, Rockwell Automation, PLC, ISO-9000
3w
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Senior Process Design Engineer
Los Angeles or Irvine or San Diego or San Francisco
$122k-$194k/yr HybridFull Time
10+ YOEB.S. in Civil or Mechanical Engineering, CA P.E. required, 10+ years process mechanical engineering experience for water/wastewater, proficiency in CAD, BIM and Microsoft Office.
CAD, BIM, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
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Senior Process Design Engineer
Los Angeles or Irvine or San Diego or San Francisco
$122k-$194k/yr HybridFull Time
10+ YOE10+ years process mechanical engineering experience for water/wastewater, BS in Civil/Mechanical Engineering, California PE license, EMR of design standards, CAD/BIM proficiency, strong communication and mentoring skills.
CAD, BIM, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
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Mechanical Design Engineer II
Los Angeles or Torrance
$90k-$150k/yr OnsiteFull Time
2+ YOERequires a bachelor's degree and 2+ years designing mechanical hardware for electronic systems, with 3D CAD, drawings, BOMs, engineering calculations, GD&T, manufacturing processes, and PDM/PLM experience.
3D CAD, ANSYS, Femap, COMSOL Multiphysics, Product Data Management (PDM), Product Lifecycle Management (PLM), Finite Element Analysis (FEA)
2w
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Process Engineer II (85558)
El Monte, California, United States
$84k-$101k/yr OnsiteFull Time
2+ YOEB.S. in engineering or science, 2+ years manufacturing experience, strong mechanical aptitude, Lean manufacturing knowledge, MS Office proficiency; composite/materials experience and programming/CAD a plus.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Project, VBA, C, C++, CATIA, Solidworks, AutoCAD, SAP, Minitab
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Staff Materials and Process Engineer
Los Angeles, California, United States
OnsiteFull Time
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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Process Engineer II (85558)
El Monte, California, United States
$84k-$101k/yr OnsiteFull Time
2+ YOEBS in engineering or science, 2+ years manufacturing/lab experience, strong mechanical aptitude, Microsoft Office proficiency, experience with composites/CAD/SAP/Minitab/VBA/C/C++ a plus, ability to work with PPE; US person may be required.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Project, VBA, C, C++, CATIA, Solidworks, AutoCAD, SAP, Minitab
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Process Engineer (New Grad December 2026)
Hawthorne or Los Angeles or El Segundo
$95k-$120k/yr OnsiteFull Time
Bachelor's degree in materials science, physics, mechanical engineering, or similar ABET-accredited engineering discipline; experimental design, statistical analysis, large-data interpretation, and Python or MATLAB experience.
Python, MATLAB, R, JMP, Minitab
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Process Engineer (New Grad Summer 2027)
Hawthorne or Los Angeles or El Segundo
$95k-$120k/yr OnsiteFull Time
0+ YOEBachelor’s degree in materials science, physics, mechanical engineering, or similar ABET-accredited discipline; experimental design, statistical data analysis, large datasets, Python or MATLAB, and strong physics fundamentals.
Python, MATLAB, R, JMP, Minitab
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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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Mechanical Inspector
Sylmar, California, United States
$25-$30/hr FieldFull Time
5+ YOEPerform in-process and final inspections to engineering drawings and standards (ANSI Y14.5, AS9102); 5+ years aerospace/defense inspection experience preferred; able to use micrometers/calipers and report results via web application.
micrometers, calipers, Microsoft Word, Microsoft Excel
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Manufacturing Engineer
El Segundo or Mojave
$100k-$160k/yr OnsiteFull Time
1+ YOE1+ years manufacturing/production/build engineering on real hardware; hands-on mechanical/electrical/aerospace experience; strong tolerance and process intuition; experience partnering with design teams; ability to move fast on the factory floor.
2d
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Materials and Processes Engineer
Hampton or Greenbelt or Huntsville or Dallas or Houston or Denver or Mountain View or Edwards
$73k-$124k/yr OnsiteFull Time
Bachelor's degree in mechanical, aerospace, or chemical engineering; spaceflight contamination-control experience; aerospace materials knowledge; strong written and oral communication; U.S. citizenship or permanent residence.
2mo
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Propulsion and Energetics Test Engineer II
Playa Vista, California, United States
$106k-$150k/yr OnsiteFull Time
2+ YOEBachelor’s in aerospace/mechanical engineering; 2+ years hardware test experience; instrumentation/data processing; test procedure documentation; strong communication; in-person Playa Vista; safe operation with flammables/explosives.
Python, MATLAB, FlexLogger, data acquisition, test software
3w
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Sr NPI Manufacturing Engineer
Northridge, California, United States
$97k-$165k/yr OnsiteFull Time
4+ YOEBachelor's degree plus 4+ years relevant experience (or advanced degree with 2+ years). Experience in manufacturing process design, equipment installation/validation, statistical analysis, and mechanical assembly equipment. Ability to manage multiple validations and travel 20–30%.
statistical process control, heat staking, adhesive dispense, electrical functional test equipment
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Sr Risk Engineer-Natural Resources
United States or Florida or San Francisco or Los Angeles
$150k-$170k/yr FieldFull Time
10+ YOE10+ years engineering experience in petrochemical/refining/midstream/LNG/specialty chemicals; background in process/chemical/mechanical/reliability/process safety; strong PSM/RBI/RCM/LOPA knowledge; ability to produce client-ready technical reports; willingness to travel.
NFPA, API, OSHA PSM, CCPS, RBI, RCM, LOPA, SIL, EML/MFL/BI
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R&D SOURCING ENGINEER IV (1413)
Los Angeles, California, United States
OnsiteFull Time
15+ YOE15+ years procurement/sourcing experience for Mil-DoD/aerospace mechanical components or BS in relevant engineering +5 years; experience with manufacturing processes, quality assurance, ERP (SAP preferred), MIL-STD and ASME Y14.5, MS Office, ability to lift 35 lbs, U.S. person required.
Enterprise Resource Planning (ERP), SAP, Microsoft Office
3mo
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Repair and Tool Technician
Commerce, California, United States
$24/hr OnsiteFull Time
Evaluating and repairing small engines, outdoor power equipment, and handheld devices; performing tool maintenance; managing inventory; providing customer service and processing rental/repair transactions.
2w
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Source Inspector
Los Angeles or California
OnsiteFull Time
Perform in-process and final source inspections including AS9102 first article inspections, read complex engineering drawings/GD&T per ANSI/ASME Y14.5, and perform mechanical measurements of aircraft/engine components.
AS9102, ANSI/ASME Y 14.5
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