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Illinois summer internships
2027 Summer Corporate Intern - Engineering
Caterpillar - San Antonio, TX, United States
Intern/Co-op - Refining Electrical Engineering (Fall 2027)
Marathon Petroleum - Louisiana, United States
Intern/Co-op - Refining Mechanical Engineer (Spring 2027)
Marathon Petroleum - Texas City, TX, United States
Software Engineer Embedded Systems I (Intern) - United States
Cisco - San Jose, CA, United States
Intern/Co-op - Accounting (Summer 2027)
Marathon Petroleum - San Antonio, TX, United States
Leasing Summer 2027 Internship - Minneapolis, MN
JLL - Minneapolis, MN, United States
Software Engineer Full Stack / Backend II (Intern) - United States
Cisco - Milpitas, CA, United States
Intern/Co-Op - Supply Chain (Summer 2027)
Marathon Petroleum - Canonsburg, PA, United States
Audit Intern Winter 2028
Crowe - Chicago, IL, United States
Legal Summer Intern Rising 2L (Intern) - United States
Cisco - Washington, DC, United States
Intern/Co-op - HES&S Environmental (Summer 2027)
Marathon Petroleum - San Antonio, TX, United States
2026-2027 U.S. Operations Intern/Co-op - Fall Posting
Dow - Knoxville, TN, United States
Returning Intern Engineer - Summer 2027 - Great Lakes Division (For Current/Former HNTB Interns Only)
HNTB - Westfield, IN, United States
Refining Chemical Engineering Intern/Co-op Fall 2027
Marathon Petroleum - Findlay, OH, United States
2026-2027 U.S. Operations Intern/Co-op - Fall Posting
Dow - Victoria, TX, United States
Intern/Co-op - Refining Mechanical Engineer (Summer 2027)
Marathon Petroleum - Wilmington, CA, United States
2026-2027 U.S. Operations Intern/Co-op - Fall Posting
Dow - Texas City, TX, United States
Mechanical Engineering Intern | Rock Island, IL
IMEG - Rock Island, IL, United States
Returning Project Controls Intern - Summer 2027 - Great Lakes Division (For Current/Former HNTB Interns Only)
HNTB - Cleveland, OH, United States
2026-2027 U.S. Operations Intern/Co-op - Fall Posting
Dow - Bristol, PA, United States
