Marathon Supervisor Jobs (NOW HIRING)

An exciting career awaits you 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.

The Marathon Los Angeles California Refinery located in Carson California has an opening for a Maintenance Supervisor - Instrument/Analyzer. This position will play a strong role in improving and maintaining the reliability of refinery electrical systems to ensure the refineries product quality and environmental compliance. This position assists in troubleshooting complex instrument issues; provides support to field Instrument Technicians; conducts investigations into Instrument failures and presents findings; coordinates shop repair of equipment, leads, mentors, trains and coaches instrument technicians; manages compliance of the companies instrument PM requirements; updates maintenance procedures, coordinates the execution of turnaround instrumentation scope; and champions safety in the Maintenance Organization.

The schedule for the position is Monday-Thursday with core hours 6 AM - 4:30 PM (PST), cover call-out supervisor duty two weeks per year, handle after hours calls several times a month over the phone and support of TAR averaging once a year.

• Manage work groups as required
• Lead, mentor, train, and coach instrument technicians
• Identify, investigate, and resolve analyzer reliability issues
• Review PM plans to ensure frequency, plan steps and hours are correct
• Implement new PM’s identified by MOC’s and projects
• Complete Intelex assignments, incident investigations, action items /MOCs
• Assist and communicate job status to the Area Maintenance Coordinator’s
• Assist with compliance with the refinery’s mechanical integrity program
• Provide on call support as required
• Submit craft availability hours for scheduling
• Identify and coordinate repairs to be performed by off-site repair shops
• Coordinate shop repair work
• Review engineering packages as necessary
• Assist in initial job walks to develop scope
• Assist in TAR scope development
• Assist the Planner and Materials Coordinator to manage warehouse stock
• Identify obsolete stock
• Identify necessary quantity changes
• Identify new or upgraded parts to be added to stock
• Coordinate emergency work
• Track Instrument/Analyzer PM completion
• Assist with work order backlog review and mitigation
• Manage calibration and certification of test equipment
• Manage certification of electrical PPE
• Mange craft progression and training requirements
• Review and update maintenance procedures
• Review procedures with craft
• Provide technical support to field instrument technicians
• Identify and coordinate onsite repairs by an outside service provider
• Coordinate major maintenance and repairs
• Participate in Shop Audits
• Perform safety audits
• Assist the Area Maintenance Coordinator/Operations Maintenance Specialist in progressing the maintenance schedule for their area

• Must have a High School Diploma or GED and at least 8 years of instrumentation maintenance experience as a craftsperson and/or maintenance foreman/supervisor in a refinery or petro-chemical industry
• Associates Degree in related area and 6 years instrumentation maintenance experience in a refinery or petro-chemical industry
• Have a Bachelor’s Degree in Engineering or related degree and 6 years instrumentation or electrical engineering experience in a refinery or petro-chemical industry
• Must be familiar with 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
• 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 Monday-Thursday with core hours 6 AM - 4:30 PM (PST), cover call-out foreman duty two weeks per year, handle after hours calls several times a month over the phone and support of TAR once a year

• Petro-chemical Analyzer experience is preferred
• Proficient in SAP is preferred
• Relocation may be available

https://mympcbenefits.com/relocating/

This job will posted through Sept 14, 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: 00023747

Pay Min/Max: $122,900.00 - $184,300.00

Salary Grade: 12

Location Address: 2350 E 223rd St

Additional locations:

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.

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.

About Marathon Petroleum Corporation Marathon Petroleum Corporation (MPC) is a leading, integrated, downstream 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.