Marathon Petroleum

Quality Assurance Inspector

Marathon Petroleum • $106K — $160K *
Manufacturing & Automotive
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • High school diploma or GED required.
  • Current API-510 and API-570 certifications required.
  • Current AWS Certified Welding Inspector (CWI) or ability to obtain within 12 months required.
  • Minimum of 2 years of experience in refining, petrochemical, or related industry preferred.
  • Valid driver's license required.
  • Availability for field, on-call, outage, project, and extended support, including nights and weekends.

Responsibilities

  • Implement Mechanical Integrity quality requirements and drive corrective actions.
  • Serve as site QA/QC coordinator for fixed equipment and related work.
  • Oversee welding quality for fabrication and repair activities.
  • Verify piping weld NDE requirements and support related field quality activities.
  • Maintain inspection records and quality documentation in MPC systems.
  • Interpret regulatory and industry requirements; support audits and improvement initiatives.
  • Coordinate damage prevention activities and contractor oversight.

Benefits

  • Comprehensive health and wellness programs.
  • Retirement savings plans with company matching.
  • Opportunities for professional development and certifications.
  • Paid time off and flexible scheduling options.
  • Employee assistance programs for personal and professional support.
Full Job Description
Position Summary:

Marathon Petroleum is seeking a team-oriented Quality Assurance Inspector to support refinery QA/QC, MPLX logistics, damage prevention, and asset management systems at the St. Paul Park Refinery. This role coordinates field activities, verifies compliance with company and regulatory requirements, oversees welding and NDE quality, maintains inspection records, and supports the execution and closeout of maintenance, project, turnaround, pipeline, and contractor work.

Key Responsibilities:
  • Implement Mechanical Integrity quality requirements, evaluate equipment reliability risks, identify quality gaps, and drive corrective actions.
  • Serve as the site QA/QC coordinator for fixed equipment, tanks, civil, insulation, and coatings work, ensuring compliance with company requirements and industry standards.
  • Oversee welding quality for fabrication and repair activities by reviewing procedures, qualifications, materials, fit-up, welding execution, NDE, repairs, and final acceptance.
  • Determine and verify piping weld NDE requirements and support coating, hydrotest, materials verification, and related field quality activities.
  • Maintain inspection records, procedures, and quality documentation in MPC systems, including IDMS, iCON, iTAR, and related reliability databases.
  • Interpret and apply regulatory, industry, code, and RAGAGEP requirements; support audits, continuous improvement initiatives, and other assigned responsibilities.
  • Coordinate damage prevention activities, including utility locating, excavation oversight, line exposure, restoration, pipeline protection, and contractor coordination.
  • Represent Marathon in pipeline right-of-way activities; maintain pipeline markers, interpret underground drawings and maps, and resolve excavation, encroachment, restoration, and contractor-performance issues.


Minimum Qualifications:
  • High school diploma or GED required.
  • Possess current American Petroleum Institute API-510 and API-570 certifications required.
  • Possess current AWS Certified Welding Inspector (CWI) or ability to obtain and maintain CWI certification within 12 months of hire required.
  • Minimum of 2 years of experience in refining, petrochemical, or a related industry preferred.
  • Valid driver's license required.
  • Must be available to provide field, on-call, outage, project, and extended support as required, including nights and weekends.


Preferred Qualifications:
  • Additional API or industry certifications relevant to fixed equipment, welding, or NDE preferred.
  • Knowledgeable in NDE methods, including Ultrasonic Testing (UT), Radiographic Testing (RT), Magnetic Particle Testing (MT), and Liquid Penetrant Testing (PT).
  • Knowledge of Damage Prevention, one-call/811 processes, excavation monitoring, utility locating, pipeline right-of-way protection, and third-party contractor oversight preferred

Required Skills and Competencies:
  • Strong knowledge of QA/QC principles, documentation, contractor oversight, field verification, and quality closeout requirements.
  • Ability to interpret procedures, specifications, drawings, work packages, permits, and quality requirements.
  • Strong written and verbal communication skills, including documenting field observations, quality issues, and contractor performance.
  • Ability to lead or facilitate meetings and communicate recommendations clearly across multiple levels of the organization.
  • Self-motivated with strong ownership, prioritization, attention to detail, critical thinking, teamwork, and follow-through.
  • Ability to oversee contractor work, verify quality and completion, and escalate concerns as needed.

Physical Requirements:
  • Work is performed inside and outside, in differing climatic conditions, and around noises, heat, heights and equipment associated with working in and around an oil refinery.
  • Must be able to perform work at ground level and at heights on concrete, metal grating, gravel, asphalt, and piping surfaces, while climbing and working in confined spaces.
  • Able to wear all personal protective equipment (P.P.E.)


Location:
St Paul Park, Minnesota

Job Requisition ID:


Pay Min/Max:
$106,900.00 - $160,300.00 Salary

Grade:
11

Location Address:
301 Saint Paul Park Rd

Additional locations:

Education:

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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