Planning & Optimization Engineer III/Senior

Marathon Petroleum Corporation•Garyville, LA

About The Position

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: The Value Chain Optimization (VCO) team has an opening for a Planning & Optimization Engineer supporting the Garyville Louisiana Refinery. This role reports through the VCO South Region to the Refining Economics & Planning Manager. This individual will develop, optimize, and execute regional operating plans using linear programming (LP) models, manage local refinery forecasting and deliverables, and partner across the value chain to align economic strategies. The role leads cross‑functional collaboration with Refining, Trading, Supply Chain, and Marketing to evaluate buy‑or‑make decisions, assess risk through economic modeling and sensitivity analysis, and drive optimal outcomes. POSITION SUMMARY: Manages the commercial aspects of regional refinery operations, including feedstock selection, product and intermediate placement, supply chain optimization, and market analysis. Demonstrates an advanced understanding of refinery operations, economics, and market dynamics for multiple refineries. Able to mentor junior engineers in planning and optimization strategies. Leads collaboration meetings within the value chain to discuss both local and regional economic drivers. Understands how regional plans for multiple refineries are developed, optimized, and executed for multiple refineries using linear programming simulation models. Modifies production plans as needed to adjust to demand/margin changes. Accurately changes modeling constraints to match real life refinery operating constraints. Manages local refinery forecasting independently. Leads end-to-end evaluation of buy-or-make cases, from data gathering to final recommendation. Develops sophisticated economic models and sensitivity analyses to assess risk and uncertainty. Collaborates with trading to align strategies and optimize outcomes. Interfaces with refinery leadership to communicate recommendations and gain alignment. Leads the development and execution of backcast models, considering factors such as production efficiency, cost drivers, and market conditions. Conducts in-depth root cause analysis to identify factors influencing historical performance deviations. Collaborates with operational teams to implement corrective actions and continuous improvement initiatives. Manages project support cases independently. Possesses a deep understanding of refinery processes and commercial implications. Capable of analyzing complex data, identifying trends, and proposing solutions autonomously. Understands local refinery deliverables and can effectively manage independently. Is trained on some refinery scheduling desks, uses APS to coordinate local refinery material balances and optimizes to improve refinery operating plans. Actively pushing execution of operating strategies to ensure compliance with monthly operating plans and changing economics.

Requirements

Bachelor’s degree in Engineering required
Four (4) years of relevant experience required
Action Planning
Adaptability
Business Acumen
Communication
Continuous Learning
Critical Thinking
Decision Making
Innovation
Problem Solving
Results Driven
Teamwork

Nice To Haves

Technical Services or Economics & Planning experience preferred

Responsibilities

Develop, optimize, and execute regional operating plans using linear programming (LP) models
Manage local refinery forecasting and deliverables
Partner across the value chain to align economic strategies
Lead cross‑functional collaboration with Refining, Trading, Supply Chain, and Marketing to evaluate buy‑or‑make decisions
Assess risk through economic modeling and sensitivity analysis
Drive optimal outcomes
Manage the commercial aspects of regional refinery operations, including feedstock selection, product and intermediate placement, supply chain optimization, and market analysis
Mentor junior engineers in planning and optimization strategies
Lead collaboration meetings within the value chain to discuss both local and regional economic drivers
Modify production plans as needed to adjust to demand/margin changes
Accurately change modeling constraints to match real life refinery operating constraints
Lead end-to-end evaluation of buy-or-make cases, from data gathering to final recommendation
Develop sophisticated economic models and sensitivity analyses to assess risk and uncertainty
Interface with refinery leadership to communicate recommendations and gain alignment
Lead the development and execution of backcast models, considering factors such as production efficiency, cost drivers, and market conditions
Conduct in-depth root cause analysis to identify factors influencing historical performance deviations
Collaborate with operational teams to implement corrective actions and continuous improvement initiatives
Manage project support cases independently
Coordinate local refinery material balances and optimizes to improve refinery operating plans
Actively push execution of operating strategies to ensure compliance with monthly operating plans and changing economics

Benefits

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 https://mympcbenefits.com .The hired candidate will also be eligible for a discretionary company-sponsored annual bonus program.

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