Internships › Chemical Engineering › California

Chemical Engineering internships in California

36 open student roles in chemical engineering in California, from internships to co-ops and research. That includes 10 co-ops. 30% list pay or say they are paid. The most common start terms are Summer 2027 and Fall 2027. Employers with the most openings: Marathon Petroleum, Gilead Sciences, Keysight Technologies, Kite Pharma and Amgen.

• Waymo New
  2027 Summer Intern, BS, Software Engineer, Driver Refinement Foundations
  Mountain View, CA, USA +1 · Summer 2027
  Open posting
• Keysight Technologies New
  Semiconductor Advanced Packaging Process Engineering Intern
  Santa Rosa, California
  Open posting
• Keysight Technologies New
  Semiconductor Process Engineering Intern
  Santa Rosa, California · $43.27-$46.60
  Open posting
• Keysight Technologies
  Semiconductor Process Development Engineering Intern
  Santa Rosa, California
  Open posting
• Tokyo Electron
  Process Engineer Summer 2027 Intern
  San Jose +1 · Summer 2027 · Paid
  Open posting
• Kite Pharma
  Intern - Kite Development - Tech Ops (Process Development)
  United States - California - Santa Monica
  Open posting
• Kite Pharma
  Intern - Kite Development - Process Development (Analytical Development)
  United States - California - Santa Monica
  Open posting
• Kite Pharma
  Intern - Kite Development - Process Development (Vector Process Design)
  United States - California - Santa Monica
  Open posting
• Gilead Sciences
  Intern - PDM - Analytical Development
  United States - California - Foster City
  Open posting
• Gilead Sciences
  Intern - PDM - Process Development, Bio Pivotal Cell Culture
  United States - California - Foster City
  Open posting
• Gilead Sciences
  Intern - PDM - Bio Pivotal Analytical Development
  United States - California - Foster City
  Open posting
• Gilead Sciences
  Intern - PDM - Formulation & Process Development
  United States - California - Foster City
  Open posting
• Gilead Sciences
  Intern - Kite Development - Tech Ops (Process Development)
  United States - California - Santa Monica
  Open posting
• Gilead Sciences
  Intern - PDM - Pre-Pivotal Biologics Formulation and Process Development
  United States - California - Foster City
  Open posting
• Gilead Sciences
  Intern - Kite Development - Process Development (Vector Process Design)
  United States - California - Santa Monica
  Open posting
• Gilead Sciences
  Intern - Kite Development - Process Development (Analytical Development)
  United States - California - Santa Monica
  Open posting
• Marathon Petroleum
  Refining Chemical Engineering Intern/Co-op Summer 2027
  Wilmington, California +16 · Summer 2027 · co-op
  Open posting
• Marathon Petroleum
  Refining Chemical Engineering Intern/Co-op Fall 2027
  Wilmington, California +16 · Fall 2027 · co-op
  Open posting
• Marathon Petroleum
  Refining Chemical Engineering Intern/Co-op Spring 2027
  Wilmington, California +16 · Spring 2027 · co-op
  Open posting
• Marvell
  Process Engineer Intern, MS - Summer 2027
  Santa Clara, CA · Summer 2027
  Open posting
• Keysight Technologies
  Semiconductor Process Engineering Intern- 6+ months Internship
  Santa Rosa, California · $30-35/hour
  Open posting
• Marathon Petroleum
  Intern/Co-op - Refining Mechanical Engineer (Fall 2027)
  Los Angeles CA Refinery +13 · Fall 2027 · co-op · $32.92 per hour
  Open posting
• Marathon Petroleum
  Intern/Co-op - Refining Electrical Engineering (Fall 2027)
  Wilmington, California +14 · Fall 2027 · co-op · $32.92 per hour
  Open posting
• Marathon Petroleum
  Intern/Co-op - Refining Electrical Engineering (Summer 2027)
  Wilmington, California +14 · Summer 2027 · co-op · $32.92 per hour
  Open posting
• Marathon Petroleum
  Intern/Co-op - Refining Mechanical Engineer (Summer 2027)
  Wilmington, California +14 · Summer 2027 · co-op · $32.92 per hour
  Open posting
• Marathon Petroleum
  Intern/Co-op - Refining Construction Management (Summer 2027)
  Wilmington, California +14 · Summer 2027 · co-op · $28.62 per hour
  Open posting
• Amgen
  Grad Intern - Operations – Process Development (Summer 2027)
  US - California - Thousand Oaks · Summer 2027
  Open posting
• Amgen
  Undergrad Intern - Operations – Process Development (Summer 2027)
  US - California - Thousand Oaks · Summer 2027
  Open posting
• General Matter
  Summer 2027 Internship - Chemical Engineering
  Los Angeles, CA · Summer 2027
  Open posting
• Freeform
  Process Engineering Intern (Summer 2027)
  Los Angeles, CA (On-site) · Summer 2027
  Open posting
• Machina Labs
  Robotic Process Engineer, Intern
  Chatsworth, CA
  Open posting
• Chevron Corporation
  2026-2027 Facilities Engineering Chemical Engineering Intern
  Bakersfield, California, United States of America +12
  Open posting
• Marathon Petroleum
  Intern/Co-op - Refining Mechanical Engineer (Spring 2027)
  Wilmington, California +14 · Spring 2027 · co-op · $32.92 per hour
  Open posting
• Marathon Petroleum
  Intern/Co-op - Refining Electrical Engineering (Spring 2027)
  Wilmington, California +14 · Spring 2027 · co-op · $32.92 per hour
  Open posting
• Chevron Corporation
  2026-2027 Petroleum Engineer Intern
  Bakersfield, California, United States of America +3 · Year-round 2026 · $35.20/hour
  Open posting
• Envista
  Process Engineering Intern
  United States of America, California, Yorba Linda
  Open posting

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Updated September 26, 2026. Listings are collected from public job boards several times a day; always check the posting on the employer's site before applying.