Refining Chemical Engineering Intern​/Co-op

Responsibilities

As a Chemical Engineer at a Marathon refinery, you will become familiar with process equipment fundamentals and best practices, build critical‑thinking skills, and understand how engineering disciplines work together in a cohesive team. You will learn how a refinery operates by working with professionals who run a specific portion of the refining process and may have the opportunity to work in multiple areas, expanding your written and verbal presentation skills in a professional environment.

Process / Technical Service Engineers – Work on a variety of projects in the Technical Services Department, applying classroom knowledge in practice. Past projects included optimizing refinery operations through test runs, performing process engineering calculations for refinery technology, monitoring catalyst and adsorbent performance, and providing recommendations for process and equipment improvements.

Operations Research Engineers – Develop planning, blending, scheduling, and process models to optimize crude oil purchasing, refinery production, and product scheduling. Typical co‑op assignments involved validating production data, mass balancing, process modeling, and building graphical interfaces for refinery units.

Environmental Engineers – Apply engineering principles to environmental projects throughout the refinery, gaining exposure to environmental laws and compliance. Duties have included performing risk‑management calculations, surveying refinery process units, working on wastewater treatment projects, and participating in inspections by federal, state, or local officials.

Products Control / Economics Engineers – Engage in projects covering operations, blending, and refinery economics. Experience includes analyzing refinery flow data, updating gasoline blend information for audits, and developing applications to present process data for operating decisions.

• Candidates must be majoring in Chemical Engineering.
• Strong academic performance.
• Authorized to work in the US on a full‑time indefinite basis without the need for employment visa sponsorship now or in the future.
• Positions available for spring, summer, and fall semesters.
• Availability for multiple work terms is preferred.
• A valid driver’s license is required.
• Concurrent enrollment in a degree‑seeking program.
• Military experience is a plus.
• Minimum pay $33.54 – Maximum pay $42.45 (hourly).

Marathon Petroleum offers a total rewards program that includes health, vision, and dental insurance; paid time off; a 401(k) matching program; paid parental leave; educational reimbursement; and a discretionary company‑sponsored annual bonus program. Detailed benefit information is available at

Marathon Petroleum Company LP is an Equal Opportunity Employer and gives consideration for employment to qualified applicants without discrimination on the basis of race, color, religion, creed, sex, gender (including pregnancy, childbirth, breastfeeding or related medical conditions), sexual orientation, gender identity, gender expression, reproductive health decision‑making, age, mental or physical disability, medical condition or AIDS/HIV status, ancestry, national origin, genetic information, military, veteran status, marital status, citizenship or any other status protected by applicable federal, state, or local laws.

If you would like more information about your EEO rights as an applicant, please contact the Human Resources Department. Marathon Petroleum offers reasonable accommodations for any part of the application process. We will consider all qualified applicants for employment, including those with arrest or conviction records, in a manner consistent with applicable state and local laws.