Marathon Petroleum

Mechanical Project Engineer

Marathon Petroleum$106K — $184K *
Manufacturing & Automotive
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's Degree in Mechanical Engineering.
  • Minimum of 4 years of post-degree experience as a Mechanical or Project Engineer in refining, petrochemical, or manufacturing.
  • Knowledge of fixed equipment and detailed mechanical/piping design.
  • Ability to manage multiple projects of varying complexity from conception to commissioning.
  • Strong understanding of Management of Change requirements and processes.
  • Excellent communication, time management, organizational, and interpersonal skills.
  • Proficient in Microsoft Office and willing to learn new computer systems.

Responsibilities

  • Define and implement projects to enhance safety, profitability, and reliability.
  • Review equipment designs with Operations and reliability teams to identify issues and improvements.
  • Ensure project designs comply with engineering and construction codes and standards.
  • Provide technical input for engineered equipment purchases and vendor drawing reviews.
  • Support maintenance with technical reviews of temporary repair packages.
  • Develop Construction Work Packages and provide engineering support for operations.
  • Lead incident investigations and participate in HAZOP reviews to enforce safety standards.

Benefits

  • Potential relocation assistance available.
  • Flexibility in work schedules with options for 9/80, 5/40, or 4/1 arrangements.
  • Opportunity for professional growth in a supportive environment.
  • Comprehensive benefits details available on the company website.
Full Job Description
Mechanical Project Engineer

Job Summary

The Marathon Los Angeles Refinery located in Wilmington/Carson, California has an opening for a Mechanical/ Project Engineer.

This position is responsible for providing technical and mechanical support to the assigned Operating Area while developing and managing a wide range of engineering and construction projects.

The available onsite schedules for the position are 9/80, 5/40 or 4/1, after-hour calls are expected a few times during a month and support of TAR once or twice a year.

Key Responsibilities
  • Define and implement Projects to improve safety, profitability and reliability. Ensures compliance with Management of Change (MOC), Process. Coordinate project scope development with other departments and outside engineering contractors. Develop estimates, decision support packages (DSPs) for assigned projects, Construction Work Packages (CWPs) and support construction.
  • Review new and existing equipment designs working with Operations, SME's, Reliability, Inspection, and Maintenance to identify potential problems, root cause issues, or areas for improvement on as needed basis.
  • In depth understanding of engineering and construction codes and specs to ensure project designs meet company and applicable standards (RAGAGEP) including ASME, TEMA, API, ANSI, NBIC and Marathon Specifications.
  • Provide technical input for the purchase and fabrication of engineered equipment, piping, valves and perform technical reviews of vendor drawings.
  • Support maintenance with technical reviews and approvals of temporary repair packages per ASME PCC-2 and applicable standards.
  • Develop CWPs and provide technical engineering support as needed to support day to day operations, including temporary installations
  • Initiate, develop, and execute MOCs for assigned projects.
  • Participate in unit and project PHAs.
  • Promotes safety awareness and takes corrective action when unsafe practices or conditions are observed.
  • Lead or participate in incident investigations and root cause analyses and participates in HAZOP reviews and incident investigations; applies safety and environmental standards to designs.


Education, Experience and Skills

Minimum Qualifications
  • Must have a Bachelor's Degree in Mechanical Engineering.
  • Must have a minimum of 4 years post degree experienceas a Mechanical or Project Engineer in the refining, petrochemical or manufacturing industry.
  • Must have fixed equipment and detail mechanical/piping design knowledge.
  • Must be able to manage multiple projects simultaneously of varying magnitude and complexity from conception to commissioning and start-up.
  • Must have strong understanding of Management of Change requirements and processes.
  • Must have excellent communication, time management, organizational, and interpersonal skills.
  • Must be proficient in Microsoft: Word, Excel, Powerpoint, and Outlook and have the ability to learn other computer systems.
  • Must be able to wear appropriate PPE in the refinery (respirator), be able to physically perform all tasks in the field and take hair drug test and physical.
  • Must have a valid driver's license.
  • Must be legally authorized to work in the US without the need for future VISA sponsorship.
  • Travel Requirement is 5% or less.
  • Must be able to work on of the onsite schedules: 9/80, 5/40 or 4/1, after hours calls are required a few times a year and support of TAR once or twice a year.


Preferred Qualifications
  • Refinery experience is preferred.
  • Piping stress engineering experience is preferred.
  • Project engineering experience is preferred.
  • Demonstrated expertise with refinery equipment is preferred. (pumps, heat exchangers, heaters, vessels, piping, etc)


Relocation may be available. https://mympcbenefits.com/relocating/

This job will posted through August 26, 2026.

This position belongs to a family of jobs with increasing responsibility, competency and skill level. Actual position title and pay grade will be based on the selected candidate's experience and qualifications.

Learn more about Marathon Petroleum's benefits at https://mympcbenefits.com/

Location:
Carson, California

Job Requisition ID:


Pay Min/Max:
$106,900.00 - $184,300.00 Salary

Grade:
11 - 12

Location Address:
2350 E 223rd St

Additional locations:

Education:
Bachelors (Required)

Employee Group:
Full time

Employee Subgroup:
Regular

About Marathon Petroleum

Marathon Petroleum Corporation (MPC) is in the business of creating value for their shareholders through the quality products and services they provide for their customers. They strongly believe how they conduct their business is just as integral to their bottom line. As a result, they strive to always act responsibly with those who work for them, with those business partners who work with them, and in every community where they operate.

Marathon Petroleum Careers

Joining Marathon Petroleum means becoming part of a leading global team in the energy sector, where job opportunities abound for those eager to advance their careers in a dynamic and inclusive environment. As one of the largest refining companies in the world, Marathon Petroleum is at the forefront of transforming the energy landscape.

Work You’ll Do

At Marathon Petroleum, your work will directly contribute to the company's ongoing success and leadership in the industry. You will collaborate with skilled professionals dedicated to innovation and excellence in all aspects of the energy sector. Our team's combined expertise fuels Marathon Petroleum's commitment to sustainable energy solutions and operational excellence.

Innovate and Lead

Step into a role that challenges and excites with Marathon Petroleum. Here, innovation isn't just a buzzword—it's a call to action. Our leadership is committed to fostering a culture where new ideas lead to groundbreaking solutions. This commitment to innovation and leadership is woven into every aspect of our business, from refining operations to environmental strategies.

Grow and Develop

Marathon Petroleum is deeply invested in the professional growth and development of its employees. We offer a variety of training and development programs, including leadership development, diversity training, and technical skills enhancement. Whether you're starting as an intern or a seasoned professional, you’ll find a pathway to personal and professional growth with us.

Be Part of Our Team

Our team at Marathon Petroleum is driven by a shared mission to excel. By joining us, you'll work alongside dedicated professionals who are passionate about their roles and the impact they have on the company and the industry. Our collaborative environment supports career advancement and fosters a culture of professional enrichment.

Diversity and Inclusion

At Marathon Petroleum, we believe diversity drives innovation. Our inclusive culture welcomes all perspectives and encourages a diverse workforce that reflects the communities we serve. We are committed to providing equal employment opportunities, ensuring that all team members have the resources they need to succeed.

Explore Job Opportunities

Marathon Petroleum offers a range of job opportunities across various functions of the business. From internships that provide real-world experience to full-time positions in engineering, business, and more, there’s a place for your skills and passions here.

Future-Proof Your Career

With Marathon Petroleum, you are not just finding a job; you are building a career equipped with the tools for success in the ever-evolving energy sector. Our robust benefits package supports your health, well-being, and financial security, allowing you to focus on professional development and career advancement.

Stay Connected

Join Our Team Discover the exciting career opportunities waiting for you at Marathon Petroleum. Search open positions that match your skills and interests. We are always on the lookout for curious, creative, and driven team members.

Keep Up to Date

Stay informed with the latest company news, industry insights, and career tips—all from the people who work here. Marathon Petroleum is more than a company—it's a community where you can grow, innovate, and lead.

Job Alert Emails

Customize your experience by subscribing to receive job alerts and insider information tailored to your preferences. Explore the rewarding opportunities that await at Marathon Petroleum.

Join Marathon Petroleum—where careers fuel futures.

Learn more about Marathon Petroleum
Size
17,700 employees
Market Cap
$53 billion
Industry
Net Income
-$9.8 billion
Founded
2005
5 Year Trend
+13.8%
Revenue
$74.9 billion
NASDAQ

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