Maintenance and Supply Chain Intern (Houston, TX, US, 77077)

CITGO PETROLEUM CORPORATION

CITGO Petroleum Corporation is a recognized leader in the refining industry and operates under the well-known CITGO brand. CITGO owns and operates three refineries located in Lake Charles, LA.; Lemont, IL.; and Corpus Christi, TX, and wholly and/or jointly owns 38 active terminals, six pipelines and three lubricants blending and packaging plants. With approximately 3,300 employees and a combined crude capacity of approximately 807,000 barrels-per-day (bpd), positions CITGO as one of the best-branded supplier companies in the industry.

At CITGO our people are our most important resource.  Our core values are Safety, Integrity, Respect, Accountability, and Care.

Job Summary

We are seeking motivated and talented students for our Maintenance & Supply Chain Internship. You will join our Optimization team, supporting daily operations in refineries and corporate groups while collaborating on high-impact projects in cost analytics and AI-centric solutions. Work alongside industry experts, learn from real challenges, and contribute to strategies that drive performance and value across our supply chain.

Minimum Qualifications

High School diploma required

Bachelor’s (sophomore, junior and senior), in Applied Mathematics, Data Science, Statistics, or Operations Research. Master’s degree preferred. 

Demonstrated experience building statistical data models for operational improvement or academic research.

Proficiency with SQL, Python, Excel, and Power BI.

Strong analytical, problem-solving, and communication skills .

Familiarity with machine learning, regression analysis, simulation, or similar statistics techniques.

Energetic, organized, and eager to learn independently and in teams. 

Job Duties

Data Modeling:

• Develop and execute SQL queries

• Build statistical and machine learning models in Python

• Analyze data to uncover key drivers of organizational savings.

Process Optimization:

 • Travel to refinery and operational sites (as available)

• Partner with field teams to identify bottlenecks and inefficiencies.

Project Management:

• Document project requirements and milestones.

• Support project team for solution implementation and user adoption.

Special Projects:

• Support one cost analysis project during your internship.

• Support one AI-related project for supply chain process improvement.

Job Duties II

Job duties displayed above are not all-inclusive, site-specific responsibilities may be assigned. 

Here are the incentives we offer

• Remote Work options available for eligible positions • Options are department and/or location specific • 9/80 Work Schedule Option (where applicable) • Annual Vacation Incentive (40-120 hours of additional pay) for Eligible Employees • Paid Vacation Time • Company-Paid Holidays • Caregiver Leave • Excellent 401(k) Match • Pension Plan

• Performance Incentive

• Company-Paid Sick Leave and Long-Term Disability • Medical, Dental, & Vision Plans; FSA and HSA options • Company-Paid Life Insurance for Active Employees • Healthy Rewards Program • Service Awards Program • Educational Assistance Plan • Dependent Children Scholarships • Reimbursement for Gym Membership • Employee Discount Programs • On-site Health Clinic (select locations) • On-site Cafeteria (select locations) • On-site Credit Union and ATM (Corporate office only) • On-site Fitness Center (select locations)

PLEASE NOTE ALL JOBS DO NOT QUALIFY FOR ALL PERKS

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or disability.

Requisition ID - 1798