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MPC

Senior Commercial Sourcing Advisor - Los Angeles Refinery

Carson, California

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hirly's read of this role

Role family
Supply chain
Seniority
Senior
Stated salary
$93,000 per year
Country
US
Work mode
On-site / unstated
First seen by hirly
23 Sept 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

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.

POSITION SUMMARY:

Marathon Petroleum Company LP has an opportunity for a Supply Chain Senior Commercial Sourcing Advisor supporting the Los Angeles Refinery. This role is open to Los Angeles, CA.

The successful candidate should possess excellent written and verbal communication skills and be able to work with various internal and external stakeholders in a collaborative manner. The ideal candidate should be a self-starter, able to conduct basic market analysis, develop bid packages, analyze proposals using a total cost of ownership methodology, negotiate and execute Purchase Orders, establish and maintain strategic business relationships with key suppliers, and validate cost savings. The preferred candidate would be able to thrive in a dynamic environment with a TAR liaison focus and extensive material knowledge. The successful individual will report to the Supply Chain Manager and have primary responsibility for managing the purchase of material for both Routine Maintenance and TAR.

RESPONSIBILITIES:

Develops contracting strategies to establish and maintain relationships with key suppliers and ensure service, commercial terms, and strategy optimization. Leads the development and implementation of regional/local sourcing strategies, decision summaries based on sourcing events and negotiations outcomes.

Leads bid package process from development through Purchase Order execution and aligns stakeholder and Supply Chain requirements, scope of work, assumptions and clarifications. Participate in vendor pre-bid meeting and site walks, leading the commercial aspects and setting expectations outlined in the request for proposal.

Runs benchmark studies, gathers and analyzes data, and makes recommendations. Performs root cause analysis related to supply challenges or disruptions. Analyzes and interprets data for use in decision-making and actions in support of business strategy, including total cost of ownership and should cost modeling.

Fosters communication internally, externally, and between different operational functions. Serves as first line point of contact for concerns related to operating needs, concerns, and Supply Chain support.

Actively seeks and identifies opportunities for value creation (cost savings, cost avoidance, revenue enhancement) and risk reduction. Develops and executes cost savings and strategic sourcing projects while ensuring business continuity and high level of supplier performance. Manages assigned business unit(s) to optimize the supply base and deliver financial benefit. Collaborates with and supports category management regarding key supplier initiatives.

Collaborates with the assigned business unit(s) to assess all requirements and develop sourcing and contracting strategies for goods and services. Supports the development, management, and execution of commercial initiatives and strategies.

Facilitates issue resolution related to supplier performance, developing awareness of associated operating risks, and qualifying contractors to ensure appropriate criteria are adequately addressed.

Develops and maintains relationships with key suppliers to ensure service, commercial terms, and optimal leverage. As needed, develops and tracks KPIs for measuring performance for key suppliers. Facilitate issues resolution related to supplier performance.

Utilizes Supply Chain tools, templates and systems, as prescribed by the Supply Chain function. Collaborates with Supply Chain peers to drive continuous improvement, alignment, and best-in-class process optimization.

Comprehends & interprets commercial, financial, & business data for opportunities and risk. Minimizes risk in Supply Chain processes to support operating components’ service requirements, including recognizing appropriate contracting strategies, developing awareness of associated operating risks, and qualifying contractors to ensure appropriate criteria are adequately addressed.

Ensures sourcing activities are properly aligned with the expectations of Supply Chain organizations and stakeholder groups, as applicable, while educating and supporting the deployment of best practices. Experience with SAP, Ariba, Tableau, M365.

Requirements

Bachelor’s degree required.

Four (4) or more years of Supply Chain or business relevant experience.

C.P.M. or C.P.S.M. certification beneficial.

As an energy industry leader, our career opportunities fuel personal and professional growth.

Location:

Carson, California

Job Requisition ID:

00024248

Pay Min/Max:

$93,000.00 - $160,300.00 Salary

Grade:

10 - 11

Location Address:

2350 E 223rd St

Additional locations:

Education:

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.

Original posting on MPC's site ↗

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