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Senior Routine Maintenance Planner – Mechanical

 Job Summary

The Marathon Los Angeles Refinery located in Carson, California is looking for a Senior Routine Maintenance Planner - Mechanical within the Major Maintenance organization.

The Senior Routine Maintenance Planner- Mechanical is responsible for developing maintenance work packages for equipment outages, and planned maintenance events in accordance with established work processes. This position develops detailed work scopes, prepares cost and labor-hour estimates, establishes activity durations, and identifies and requisitions required materials, equipment, and contracted services.

The work schedule for this position is Monday through Thursday, 6:00 AM–4:30 PM. After-hours and extended-hour support may be required during maintenance events and equipment outages.

 

Key Responsibilities

• Convert approved SAP notifications into maintenance work orders following the established work process.
• Develop detailed mechanical maintenance job plans with sequential work steps, estimated labor hours, craft requirements, activity durations, materials, equipment, specialty tools, and contracted services.
• Plan routine maintenance, equipment outages, and other planned maintenance events for refinery mechanical equipment and supporting systems.
• Perform field assessments to develop work scopes, identify job-site requirements, and validate planning assumptions.
• Prepare work packages containing detailed instructions, safety requirements, drawings, piping and instrumentation diagrams (P&IDs), equipment documentation, material lists, isolation requirements, lifting requirements, and safe work permit requirements.
• Coordinate with Operations, Maintenance, Engineering, Inspection, and equipment specialists to review work scopes and develop repair plans for complex maintenance activities.
• Verify work instructions comply with established refinery and corporate procedures and standards.
• Identify and requisition materials, equipment, specialty tools, rental equipment, and contracted services. Confirm availability before scheduled execution.
• Provide field support during execution of planned maintenance events and equipment outages, including resolving work-package issues, coordinating emergent needs, communicating deviations, and supporting safe, efficient completion of the work.
• Monitor and communicate planning status, material issues, resource constraints, and deviations that may affect maintenance execution.
• Incorporate field feedback, job history, and lessons learned into future work plans to improve safety, quality, and efficiency.
• Identify and implement continuous improvement and maintenance cost reduction opportunities.
• Work as part of a cross-functional team consisting of refinery personnel and contractors to achieve maintenance and reliability objectives.
• Read and interpret P&IDs, mechanical drawings, equipment drawings, vendor manuals, and other technical documentation.

Minimum Qualifications

• Must have a High School Diploma or GED and at least 5 years of mechanical maintenance or maintenance planning experience in a refinery, petrochemical or power generation industry OR a Bachelor’s Degree in a related field and at least 5 years of relevant industrial mechanical maintenance or maintenance planning experience in a refinery, petrochemical or power generation industry. (Education must be obtained/completed prior to start date.)
• Must have maintenance experience with industrial mechanical equipment.
• Must be able to read and interpret P&IDs, mechanical drawings, equipment drawings, and technical documentation.
• Must be proficient with Microsoft Word, Excel, and Outlook.
• Must be able to wear appropriate PPE in the refinery, including a respirator, and physically perform required field activities.
• Must be able to take a hair drug test and physical.
• Must have a valid driver’s license.
• Must be legally authorized to work in the U.S. without the need for future visa sponsorship.
• Travel requirement is 5% or less.
• Must be able to work Monday through Thursday, 6:00 AM–4:30 PM, and provide after-hours and extended-hour support as required during planned maintenance events and equipment outages.

 

Preferred Qualifications

• Previous maintenance planning experience is preferred.
• Previous SAP maintenance experience is preferred.
• Previous refinery, petrochemical or Cogeneration maintenance experience is preferred.
• Experience planning maintenance for rotating and fixed equipment, including pumps, compressors, turbines, heat exchangers, pressure vessels, valves, and piping systems, is preferred.
• Experience planning and supporting execution of equipment outages, major maintenance events, or turnaround activities is preferred.
• Experience developing detailed maintenance and outage plans in Primavera P6 and/or Microsoft Project, including activity sequencing, durations, logic ties, resource requirements, and schedule updates is preferred.
• Experience coordinating contracted maintenance services is preferred.
• Previous supervisory or maintenance leadership experience is preferred.

 

This job will posted through Oct 23, 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

Job Requisition ID:

00024608

Pay Min/Max:

$106,900.00 - $184,300.00 Salary

Grade:

11 - 12

Location Address:

2350 E 223rd St

Additional locations:

Wilmington, California

Education:

High School (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, 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.

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 mympcbenefits.com. The 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.