Spring 2026

Intern/Co-op

Refining Chemical Engineering

Posted on 11/30/2025

Marathon Petroleum

Marathon Petroleum

10,001+ employees

Downstream energy company refining and marketing

Compensation Overview

$32.92 - $41.60/hr

+ Discretionary annual bonus

No H1B Sponsorship

Salt Lake City, UT, USA + 18 more

More locations: Galveston, TX, USA | Bismarck, ND, USA | Gonzales, LA, USA | El Paso, TX, USA | Detroit, MI, USA | Martinez, CA, USA | Canonsburg, PA, USA | Terre Haute, IN, USA | Bowling Green, OH, USA | Carson, CA, USA | San Antonio, TX, USA | Anacortes, WA, USA | Soldotna, AK, USA | Cottage Grove, MN, USA | Dickinson, United States | Canton, OH, USA | Owensboro, KY, USA | Ashland, KY, USA

In Person

Category
Process Engineering
Requirements
  • Candidates must be majoring in Chemical 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
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 gain an understanding of how all engineering disciplines work together as a cohesive team; you will 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, you will have an opportunity to work on more than one area of the refinery, leading to a broad understanding of how the plant operates; 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; the vast majority of our Chemical Engineering interns/co-ops work in this area; the experience will expand your understanding of the refining environment and technical aspects of the refinery; past projects/duties 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 in regards to 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; the models are used to optimize crude oil purchasing, refinery production, blending and finished product scheduling, and optimization of refinery production; 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; you will be applying the engineering principles and calculations to various environmental projects and will also give you a broad knowledge of the various environmental laws that are applicable to refineries and what it takes to maintain compliance with those laws; past projects/duties include: perform process calculations for the Risk Management Plan, including taking physical surveys of refinery process units; work on various process engineering projects within a Wastewater Treatment Plant; participate in inspections and/or testing that is 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; you will gain an understanding of how a tank farm is operated and how gasoline and other products are prepared and shipped to customers; in addition, you will gain some exposure to the overall economics of the refinery and how operating decisions are made based upon these economics; past projects/duties include: analyze refinery process flow data and compare to recommended optimum levels, this will help in identifying equipment failures which cause variances in capacity from the optimum levels; update information on gasoline blends and tank samples in preparation for an annual blender waiver audit; develop applications to better present process data for refinery operating decisions.

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Company Size

10,001+

Company Stage

IPO

Headquarters

Findlay, Ohio

Founded

1887

Simplify Jobs

Simplify's Take

What believers are saying

  • MPLX mid-single digit growth in natural gas and NGL chains strengthens cash flow.
  • Q1 2026 adjusted EBITDA surged 40% to $2.8 billion versus prior year.
  • Square Robot partnership enables cost-efficient tank inspections across refineries and terminals.

What critics are saying

  • California AB-3232 July 2026 ban strands 1,000 ARCO stations and 20% West Coast throughput.
  • EPA January 2026 RIN mandate hikes compliance costs $500 million annually on nine facilities.
  • Tesla Semi scaling to 100,000 units by end-2027 crashes diesel crack spreads 30%.

What makes Marathon Petroleum unique

  • Largest U.S. refining system with integrated midstream operations via MPLX LP.
  • 7,000+ Marathon and ARCO branded retail stations nationwide with loyalty rewards.
  • Secured $5 billion credit facility April 2026 for operational and growth flexibility.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Paid Vacation

401(k) Company Match

Parental Leave

Professional Development Budget

Performance Bonus

Company News

StreetInsider
Apr 14th, 2026
Marathon Petroleum enters $5 billion credit agreement

Marathon Petroleum Corporation (NYSE: MPC) entered into a $5 billion, five-year revolving credit agreement on April 7, 2026, according to a company statement.The agreement involves JPMorgan Chase Bank as administrative...

National Today
Apr 9th, 2026
Cliftonlarsonallen Wealth Advisors Boosts Marathon Petroleum Holdings - San Diego Today

Cliftonlarsonallen Wealth Advisors LLC, a financial advisory firm, purchased a new stake of 11,188 shares in Marathon Petroleum Corporation (NYSE:MPC) during the fourth quarter, according to a recent SEC filing. The new position was valued at approximately $1.82 million.

Yahoo Finance
Apr 1st, 2026
Via Separations raises $36M to expand membrane filtration platform into refining and chemicals

Via Separations, a developer of industrial separation solutions, has raised $36 million in funding led by Climate Investment, Aramco Ventures and Marathon Petroleum Corporation. Existing investors including Embark Ventures, The Grantham Foundation and Massachusetts Clean Energy Center also participated. The company has developed modular filtration systems that replace heat-based separation processes with mechanically driven membrane technology, reducing energy use by up to 90 per cent at the separation step. Thermal separations account for approximately 12 per cent of global energy consumption. Via has proven the technology commercially in the pulp and paper sector, with nearly two years of continuous operation at a mill in Grande Prairie, Alberta. The funding will accelerate deployment into refining and chemicals sectors, with hundreds of millions of dollars worth of projects in the pipeline.

Alaska Vocational Technical Center (AVTEC)
Feb 25th, 2026
Marathon Petroleum continues investment in AVTEC Maritime education with $16,000 contribution.

Marathon Petroleum continues investment in AVTEC Maritime education with $16,000 contribution. Feb. 25, 2026 No. 26-4 SEWARD - The Alaska Vocational Technical Center (AVTEC) is pleased to celebrate its continued partnership with Marathon Petroleum through a new $16,000 contribution to support student scholarships and maritime training programs. "Having a safe and reliable marine operation, along with qualified mariners, is critical to our operations," said Bruce Jackman, vice president of refining at Marathon's Kenai refinery. "AVTEC and its mariner programs are pivotal parts of our marine and refinery team. We are proud of our many years of investment in AVTEC Marine Program. The shared value of our partnership runs deep." AVTEC Director Dr. Cory Ortiz shared this about the unique partnership: "Marathon Petroleum's partnership reflects a deep commitment to Alaska's people and economy," said AVTEC Director Cory Ortiz, Ph.D. "Their investments have modernized our training technology, expanded access for students, and directly strengthened the maritime workforce that serves communities across our state." Since 2018, Marathon Petroleum has played a foundational role in advancing AVTEC's Maritime Training Center through major capital investments and ongoing scholarship support. In 2018 and 2019, Marathon Petroleum donated $95,000 each year to modernize AVTEC's maritime simulator and instructional technology. "Maritime education supports many industries in Alaska," said Department of Labor and Workforce Development Commissioner Cathy Muñoz. "The Department is grateful to Marathon Petroleum for their long-term support for student success and career and technical education in Alaska." These funds enabled the transition from legacy analog bridge systems to fully digital bridge consoles. Upgrades included touchscreen computer systems, helm and throttle controls, azimuth drive controls, tugboat winch controls, and simulator software enhancements. The investment also supported oil spill response training vessels, projector system upgrades, and critical battery-backup infrastructure. Marathon Petroleum's support expanded in November 2022 to include direct scholarship funding for students enrolled in AVTEC maritime programs. These scholarships reduce financial barriers and allow students to focus on completing rigorous credential training and entering high-demand maritime careers. Additional scholarship investments in prior years have helped cover tuition, books, assessments, and training costs for students pursuing credentials such as Basic Training, Proficiency in Survival Craft (PSC), Able Seaman (AB), and Rating Forming Part of a Navigational Watch (RFPNW). Since the inception of the scholarship initiative, more than 30 students have received direct financial support. Most recently, in the fall of 2025, 10 students enrolled in Able Seaman and related maritime programs were awarded Mariner Scholarships to support their studies. AVTEC looks forward to building on this impactful partnership in the years ahead as both organizations continue to share a common goal: strengthening Alaska's maritime workforce and creating opportunity for Alaskans across the state.

BIC Magazine
Jan 1st, 2026
Crystaphase recognized by Marathon as a 'Partner in Collaboration'

Crystaphase recognized by Marathon as a 'Partner in Collaboration' Crystaphase was named a 'Partner in Collaboration' award winner at Marathon Petroleum Corp.'s 10th Annual Supplier Recognition Awards. The program honors suppliers that made a significant impact on Marathon's operations over the past year, recognizing outstanding performance, collaboration and commitment to shared success.

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