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Intern​/Co-op - Refining Mechanical Engineer

Job in Garyville, St. John the Baptist Parish, Louisiana, 70051, USA
Listing for: Marathon Petroleum
Full Time, Apprenticeship/Internship position
Listed on 2026-06-27
Job specializations:
  • Engineering
    Mechanical Engineer, Manufacturing Engineer, Process Engineer, Quality Engineering
Salary/Wage Range or Industry Benchmark: 32.92 - 41.67 USD Hourly USD 32.92 41.67 HOUR
Job Description & How to Apply Below
Position: Intern/Co-op - Refining Mechanical Engineer (Spring 2027)
Location: Garyville

Mechanical Engineer Opportunity At Marathon Refinery

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.

As a Mechanical Engineer at a Marathon refinery, you can expect to become familiar with industry codes 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, Mechanical 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.

The majority of Mechanical Engineering co-ops and interns enter into the following positions:

Area Refining Engineer/Project Engineers develop and use project management skills to create project scopes, estimates, and schedules. Once a project is developed and approved, you, as the project manager, will oversee the design effort and assist in the construction process. MPC will provide training and educational opportunities to help you develop your knowledge of other engineering disciplines. We are committed to developing engineers into professional project managers who can successfully manage projects of all sizes.

Reliability Engineers support the refinery's Maintenance Department through design and development of equipment related improvements. Such improvements include root cause failure analysis, optimization of maintenance programs in rotating equipment (pumps, compressors, etc.), and troubleshooting fixed equipment (refinery pressure vessels, heat exchangers, piping systems, etc.). Reliability Engineers will also be continuously challenged to find new technology in design, materials and repair methods to achieve refinery goals of longer running times at lower costs.

Qualifications:

  • Candidates must be majoring in Mechanical Engineering or Civil Engineering
  • Strong academic performance
  • Candidates must be 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 - $41.67 per hour

Location:

Findlay, Ohio

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