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Illinois summer internships
Corporate Finance Intern
Ingredion - Westchester, IL, United States
Returning Intern Engineer - Summer 2027 - Great Lakes Division (For Current/Former HNTB Interns Only)
HNTB - Ashwaubenon, WI, United States
Intern/Co-Op - Supply Chain (Summer 2027)
Marathon Petroleum - Louisiana, United States
Intern/Co-op - Refining Mechanical Engineer (Summer 2027)
Marathon Petroleum - Canton, OH, United States
2027 Summer Corporate Intern - Engineering
Caterpillar - Tucson, AZ, United States
Refining Chemical Engineering Intern/Co-op Summer 2027
Marathon Petroleum - Martinez, CA, United States
Software Engineer Full Stack / Backend II (Intern) - United States
Cisco - San Jose, CA, United States
Software Engineer Full Stack / Backend I (Intern) - United States
Cisco - Milpitas, CA, United States
2026-2027 U.S. Operations Intern/Co-op - Fall Posting
Dow - Ardmore, OK, United States
Intern/Co-op - Refining Electrical Engineering (Spring 2027)
Marathon Petroleum - Findlay, OH, United States
Logistics Operations Intern
Mondelēz International - Morris, IL, United States
Intern/Co-op - HES&S Environmental (Summer 2027)
Marathon Petroleum - Salt Lake City, UT, United States
Supply Chain Intern - Engineering and Business Majors
Ecolab - Elk Grove Village, IL, United States
Civil Engineering Intern | Macomb, IL
IMEG - Macomb, IL, United States
AI Operations Engineer I (Intern) - United States
Cisco - San Francisco, CA, United States
Capital Markets Summer Internship 2027 - Seattle, WA
JLL - Seattle, WA, United States
Refining Chemical Engineering Intern/Co-op Summer 2027
Marathon Petroleum - Wilmington, CA, United States
Intern/Co-op - HES&S Safety and Industrial Hygiene (Summer 2027)
Marathon Petroleum - Dickinson, ND, United States
MBA Marketing Intern
Ecolab - Naperville, IL, United States
Intern/Co-op - Refining Construction Management (Summer 2027)
Marathon Petroleum - Canton, OH, United States
