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Process Design Engineer III/Senior Process Design Engineer

Marathon Petroleum Corporation
Robinson, Illinois Posted Sep 23, 2026
HybridUSD 122,900 - 212,000 / year

About this role

Process Design Engineer III/Senior Process Design Engineer

Overview

Marathon Petroleum Company’s Illinois Refining Division in Robinson, IL is seeking a Process Design Engineer III/Senior Process Design Engineer. This position’s primary function is to contribute to refinery/organizational process optimization and project development. This includes identifying opportunities and developing projects to increase throughput, enhance yields, improve reliability, and optimize energy or water use in process units. This position reports to the Process Optimization & Growth Manager.

Relocation is approved for this position.

Key Responsibilities

  • Contributes to refinery/organizational long-term strategy development and identifies opportunities to increase throughput, enhance yields, improve reliability and optimize energy and water use in process units.

  • Develops process designs for new projects and unit modifications, including PFDs, P&IDs, and heat/material balances.

  • Performs process simulations and calculations to support equipment sizing, hydraulic analysis, and energy optimization as well as lead economic analysis and establish project rate of return.

  • Collaborates with project engineers, operations, and external vendors to ensure alignment of design with operational needs.

  • Prepares process design packages and support HAZOPs, LOPA studies, and other safety reviews.

  • Provides technical leadership during project execution, including design reviews, construction support, and commissioning.

  • Stays current with industry standards and best practices to ensure high-quality, cost-effective designs.

  • Serves as a mentor for less experienced engineers.

  • Education and Experience

Minimum (Required) Qualifications:

  • Bachelor’s degree in chemical engineering
  • Four (4) years of process engineering experience within refining or heavy industry
  • Valid driver’s license
  • Must be legally authorized to work in the US on a full-time indefinite basis without the need for employment visa sponsorship now or in the future
  • Must be able to wear appropriate PPE in the refinery and be able to physically perform all tasks in the field

Preferred Qualifications:

  • Six (6) years of process engineering experience
  • Two (2) years of project or process design experience

Skills

  • Microsoft Office suite including Excel

  • Petrosim or similar process modelling such as MySep

  • KG Tower

  • Pay and Benefits

  • Retirement: 401k with a company match up to 7%

  • Pension: Company funded pension plan up to 11%

  • Annual Bonus: Eligible for a company sponsored annual bonus

  • Paid Parental Leave

  • Educational Reimbursement

  • For full benefits details visit mympcbenefits.com

  • Schedule Requirements

Options:

  • Full In-Office: 5 days in the office per week, 8 hours per day.

  • Hybrid: 4 days in the office, 1 day work-from-home per week, 8 hours per day.

  • 9/80 Schedule: 9 hours Monday-Thursday in the office, with every other Friday off. On working Fridays, the schedule is 8 hours.

  • Additional hours as needed for turnaround and outage support.

  • As an energy industry leader, our career opportunities fuel personal and professional growth.

Location

Robinson, Illinois

Education

Employee Group:

  • Full time

Employee Subgroup:

  • Regular

  • 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.

  • We will consider all qualified Applicants for employment, including those with arrest or conviction records, in a manner consistent with the requirements of applicable state and local laws. In reviewing criminal history in connection with a conditional offer of employment, Marathon will consider the key responsibilities of the role.

  • About Marathon Petroleum Corporation

  • Marathon Petroleum Corporation is a leading, integrated, downstream energy company headquartered in Findlay, Ohio. The company operates the nation's largest refining system. MPC's marketing system includes branded locations across the United States, including Marathon brand retail outlets. MPC also owns the general partner and majority limited partner interest in MPLX LP, a midstream company that owns and operates gathering, processing, and fractionation assets, as well as crude oil and light product transportation and logistics infrastructure.

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