Intern/Co-op - Refining Chemical Engineering Fall 2026

An exciting career awaits you At MPC, we’re committed to being a great place to work – one that welcomes new ideas, encourages diverse perspectives, develops our people, and fosters a collaborative team environment. Responsibilities As a Chemical Engineer at a Marathon refinery, you will familiarize yourself with process equipment fundamentals and best practices, build critical thinking skills, and gain an understanding of how all engineering disciplines work together as a cohesive team. You will also gain knowledge of various aspects of a refinery by working with a team of professionals who run a specific portion of the refining process. Most often, Chemical Engineers will have an opportunity to work on more than one area of the refinery, leading to a broad understanding of how the plant operates. Finally, you will have the opportunity to expand your written and verbal presentation skills in a professional work environment. Process / Technical Service Engineers May work on a variety of projects in the Technical Services Department together with your mentor that put your classroom experience as a Chemical Engineer into practice. Past projects include: develop and lead test runs to optimize refinery operations; perform process engineering calculations concerning the various process technology (or equipment) in the refinery; monitor and make recommendations regarding catalyst and adsorbents; complete projects and provide recommendations for improvements to the refinery process and equipment. Operations Research Engineers May help develop planning, blending, scheduling, and process models for refinery engineers. Typical college co‑op assignments include: validation of production data and mass balancing, process modeling, and development of graphical interfaces of refinery process units. Environmental Engineers Work on projects that involve the compliance of the entire refinery, and you will be exposed to the majority of process units in the refinery. Past projects include: perform process calculations for the Risk Management Plan; work on various process engineering projects within a Wastewater Treatment Plant; participate in inspections and/or testing conducted by federal, state, or local officials. Products Control / Economics Engineers May work on a wide array of projects including operations, blending, and refinery economics. Past projects include: analyze refinery process flow data and compare to recommended optimum levels; update information on gasoline blends and tank samples for an annual blender waiver audit; develop applications to better present process data for refinery operating decisions. Qualifications 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 are available 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 a plus MIN - $32.92 per hour / MAX - $41.60 per hour Benefits Learn More About Marathon Petroleum’s Benefits At Equal Opportunity Employer 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, click here. If you need a reasonable accommodation for any part of the application process at Marathon Petroleum LP, please contact our Human Resources Department at View email address on click.appcast.io. #J-18808-Ljbffr