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.
Marathon Petroleum Corporation’s (MPC) Los Angeles Refinery, located in Carson/Wilmington, California, is looking for an Instrumentation Project Engineer in the Area Engineering Department.
The Instrument Engineer will be responsible for providing technical support to their assigned refinery process areas and assigned projects managed by the Mid-Cap project team. They will also be responsible for managing instrument focused projects, from conceptual engineering through detailed design, construction, and project completion. The Instrument Engineer will report to the Area Instrument Engineering Manager.
The available schedules for the position are 9/80 or 4/1, after hours calls happen a couple of times a year normally can be handled over the phone and support of TAR approximately once a year. Core Business hours are 7 AM - 4:30 PM.
Key Responsibilities
Execute instrumentation projects that align with refinery business objectives, supporting safe, reliable operations and compliance with applicable regulatory requirements.
Apply project management skills across all phases: development, justification, design, construction, and start-up.
Provide instrumentation technical support to operating units and capital projects, including scope development, and interdisciplinary coordination; serve as project engineer on small projects.
Manage multiple projects/programs safely, efficiently, and within budget; develops strategies to meet schedules and mitigate delays.
Perform specification and design of instrumentation, including sizing, selection, datasheet development/review, and preparation of technical requisitions for procurement.
Ensure compliance with company and industry standards by supporting process safety activities, including Management of Change (MOC), Process Safety Information (PSI), and mechanical integrity documentation. HAZOP, LOPA, and Safety Instrumented Systems (SIS) lifecycle requirements.
Support testing and commissioning activities, including factory and site acceptance testing (FAT/SAT), loop checks, calibration, and startup.
Evaluate new instrumentation technologies and support continuous improvement through collaboration with cross-functional teams.
Maintain accurate engineering documentation, including updates to piping and instrumentation diagrams (P&IDs), loop drawings, & logic diagrams.
Support refinery Turnarounds (TAR) and maintenance outages by planning instrumentation scope, coordinating with operations and maintenance teams, overseeing project implementation, and helping ensure a safe, efficient return to service.
Provide technical support for process analyzers, including specification, start-up, performance monitoring, and implementation of projects to enhance measurement reliability and process control.
Support SIS and LOPA gap closure projects by identifying instrumentation scope, developing technical solutions, coordinating implementation, and verifying compliance with process safety and functional safety requirements.
Develop scope, cost estimates, and schedules for capital and expense projects; prepares Decision Support Packages (DSPs) and presents to leadership.
Coordinate with external engineering consultants and designers to complete projects.
Collaborate with stakeholders including Maintenance, Construction, and Turnaround teams to support planning and execution.
Participate in HAZOP reviews and incident investigations; may lead sessions depending on experience level.
Apply engineering codes and specifications; ensures designs meet safety, environmental, and permitting standards.
Promote safety awareness and take corrective action when unsafe practices or conditions are observed.
Education, Experience and Skills
Minimum Qualifications
Must have a Bachelor’s Degree in Engineering. (Education must be obtained/completed prior to start date)
Must have a minimum of 2 years of post-degree instrumentation engineering experience in a refinery, chemical plant, or similar industry required.
Must be proficient in Microsoft: Word, Excel and Outlook.
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. (MPC determines valid status.)
Must be legally authorized to work in the US without the need for future VISA sponsorship.
Travel Requirement is 5 % or less a year.
Must be able to work on of the available schedules: 9/80 or 4/1, after hours calls happen a couple of times a year normally can be handled over the phone and support of TAR approximately once a year. Core Business hours are 7 AM - 4:30 PM.
Relocation may be available. https://mympcbenefits.com/relocating/
This job will posted through June 7, 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/
As an energy industry leader, our career opportunities fuel personal and professional growth.
Location:
Carson, California
Additional locations:
Job Requisition ID:
00022214
Location Address:
2101 E Pacific Coast Hwy
Education:
Bachelors (Required)
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, citizenshipor 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
If you need a reasonable accommodation for any part of the application process at Marathon Petroleum LP, please contact our Human Resources Department at talentacquisition@marathonpetroleum.com Please specify the reasonable accommodation you are requesting, along with the job posting number in which you may be interested. A Human Resources representative will review your request and contact you to discuss a reasonable accommodation.Marathon Petroleum offers a total rewards program which includes, but is not limited to, access to health, vision, and dental insurance, paid time off, 401k matching program, paid parental leave, and educational reimbursement. Detailed benefit information is available at https://mympcbenefits.comThe hired candidate will also be eligible for a discretionary company-sponsored annual bonus program.
Equal Opportunity Employer: Veteran / Disability
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.
Marathon Petroleum Corporation (MPC) is a leading, integrated, downstream and midstream 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. More information is available at www.marathonpetroleum.com.
