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. Refinery Operations Shift Supervisor Job Summary The Marathon Martinez Renewables Facility located in Martinez, California is seeking a Refinery Operations Shift Supervisor. The available onsite schedule for the position is Rotating 4 days on and 4 days off (12 hour shifts) alternating between days and nights; after hours calls and maintenance outage support are required. (This posting is for all department area teams. The selected candidate may be assigned to cover Renewable Fuels (RF), Product Controls (PC) Logistics, or Cogen operations area teams.) Key Responsibilities Creates a committed ownership culture, setting clear expectations, and holding people accountable in support of Operational Excellence. Establishes and maintains culture of safety and environmental excellence by modeling appropriate behaviors and ensuring all employees follow safe work and operating best practices. Leads shift in Conduct of Operations including, but not limited to, effective shift relief/start-of-shift meeting, proper job planning, equipment preparation, work permitting and Joint Job Site Visit (JJSV), and proactive and effective unit monitoring. Leads safe, efficient, effective, and compliant implementation of production plan. Drives implementation and understanding of production plan through communication and vigilance, reporting unit status and constraints. Optimizes unit performance in coordination with other units and other departments to ensure variables are within the operating envelope. Supports unit reliability goals through proactive equipment care and condition monitoring. Reviews operator rounds, develops proper mitigation response, and communicates to leadership as necessary. Ensures equipment is prepared for maintenance in a timely manner and communicates exceptions. Determines needed emergency maintenance support. Coordinates response to abnormal situations, including troubleshooting and mitigation or recovery activities, and ensures effective communication to affected units and Operations leadership. Capable of qualifying, operating, and covering a console position as necessary. Supports high performance culture and development through training, coaching and mentoring. Manages operator scheduling. Responsible for maintaining day to day standard and policy compliance, including but not limited to operator training, quality pre-startup safety reviews, adhering to MOC requirements, procedure utilization, Leads execution of ‘what-if’ drills to improve operational readiness and shift upskilling. Develops the proficiency necessary to utilize internally established systems including OpsCore, Procedure Accelerator, Go Plant, Equipment Bypass, My Ops (asset Intellect) etc. Effectively communicates with multiple levels of the site organization. Displays strong communication skills and organizational skills. Fosters a positive work environment that encourages operator retention. This role may be used to support, or assume the responsibilities of the Operations Projects Specialist, Operations Training Specialist, Operations Turnaround Specialist, Operations Shift Supervisor, Operations Refinery Wide Shift Supervisor, and Operations Superintendent role. Education, Experience and Skills Minimum Qualifications Must have High School Diploma or GED. Must have at least four (4) years of experience as an oil refining operator or renewables facility operator. Must be proficient in Microsoft 365: 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 able to obtain a TWIC Card. Must be legally authorized to work in the US without the need for future VISA sponsorship. Travel Requirement is 5%. Must be able to work the available onsite schedule which is Rotating 4 days on and 4 days off (12 hour shifts) alternating between days and nights; after hours calls and maintenance outage support. Preferred Qualifications Previous board console operator experience is strongly preferred. Previous experience as supervisor or fill-in supervisor is strongly preferred. Relocation may be available. https://mympcbenefits.com/relocating/ This job will posted through Sunday, November 8, 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: Martinez, California Job Requisition ID: 00024830 Pay Min/Max: $122,900.00 - $184,300.00 Salary Grade: 12 Location Address: 150 Solano Way 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. 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 [email protected]. 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. 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.

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