Commercial Sourcing Advisor

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 RESPONSIBILTIES: 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 strat…

View the full posting and apply