Commercial Sourcing Advisor

4526 Marathon Refining Logistics Services LLC; Mococo (CA); On-site; USD 81,000 - 140,000; Full time

Benefits offered by this job

Health insurance

401k matching

Paid time off

Job summary

Marathon Petroleum Company LP in Martinez, California is seeking a Commercial Sourcing Advisor to lead strategic sourcing, manage supplier performance, and partner with operations to optimize costs and continuity. The role reports to the Supply Chain Director and focuses on turnarounds, contract terms, and risk management.

The ideal candidate will drive value creation through cost savings, supplier collaboration, and robust analytics while supporting business continuity in a dynamic refining

Qualifications

• Bachelor’s degree required. Education in Business, Supply Chain, or Engineering preferred.
• 2+ years of supply chain or business-relevant experience.

Responsibilities

• Manage material commodity buying to support operations, turnarounds, and projects.
• Develop contracting strategies with key suppliers and optimize terms.
• Lead regional/local sourcing strategies and bid analysis.
• Coordinate with maintenance, engineering, and project teams on material needs.
• Negotiate terms and conditions of service and supply agreements.
• Analyze data for decision-making, total cost of ownership, and risk management.
• Identify opportunities for cost savings and supplier performance improvements.
• Coach contract owners to drive performance and compliance.

Skills

Strategic sourcing

Vendor management

Contract negotiation

Cost optimization

Cross-functional collaboration

Data analysis

Education

Bachelor's degree

Job description

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 driven Commercial Sourcing Advisor to support the Martinez Renewable Fuels Facility in Martinez, California. This role is ideal for an individual who wants to lead commercial strategy, influence supplier performance, partner closely with operations, and create measurable value. The successful candidate will report to the Supply Chain Director and will have primary responsibility for managing an assigned portfolio of categories and purchasing materials for turnarounds while helping advance strategic sourcing, contractor performance, and business continuity objectives. This position offers the opportunity to influence business outcomes in a visible operating environment, work directly with stakeholders, and lead sourcing strategies that improve cost, reliability, risk management, and supplier performance. The role is well suited for someone who takes initiative, builds trust quickly, thinks commercially, and wants to grow as a strategic advisor within Supply Chain.

KEY RESPONSIBILITIES

• Manages material commodity buying to support operations, turnarounds, and projects, including sourcing, bid evaluation, supplier negotiations, and purchase order execution.
• Partners with maintenance, engineering, turnaround, and project teams to align material requirements and delivery schedules, expedite critical materials, and resolve supply issues to support readiness and on‑time execution.
• Develop contracting strategies to establish and maintain relationships with key suppliers and ensure services, 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.
• Leads the preparation and negotiation of terms and conditions related to service and/or supply agreements.
• Manages related rate sheets and ensures cost competitiveness across vendor categories within the enterprise and across the industry.
• 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.
• Serves in an advisory role to maintain contract compliance and minimize risk in support of key stakeholders and business units.
• Coaches’ business unit contract owners to drive performance and compliance of contracts 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.
• Collaborate 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 assure 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.

ADDITIONAL SKILLS & COMPETENCIES

The position requires the successful individual to possess and desire growth in the following skills and competencies: Adaptability Continuous Improvement Mindset Critical Thinking Ability to influence others Financial acumen Project management capable Ability to perform market research Desire to initiate and drive strategic sourcing

MINIMUM QUALIFICATIONS

• Bachelor’s degree required. Education in Business, Supply Chain, or Engineering preferred.
• Two (2) or more years of Supply Chain or business relevant experience.

LOCATION & PAY INFORMATION

Location: Martinez, California. Job Requisition ID: 00024619. Pay Min/Max: $80,800.00 - $139,500.00. Salary Grade: 9 - 10. Location Address: 150 Solano Way. Additional locations: Education: Employee Group: Full time Employee Subgroup: Regular.

EEO & BENEFITS

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 need a reasonable accommodation for any part of the application process at Marathon Petroleum LP, please contact our Human Resources Department at [e-mail]. 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 MARCONET ...

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.