Maintenance and Supply Chain Intern

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 curious, driven, and high-potential students to join our Maintenance & Supply Chain Optimization team.

You will work alongside industry experts to solve real business challenges across refinery operations, maintenance, procurement, supply chain, and digital transformation initiatives.

You will help convert complex business problems into structured solutions using analytics, process improvement, and AI-enabled capabilities.

Interns will contribute to high-impact projects involving operational performance, cost optimization, workflow automation, knowledge management, and next-generation AI-assisted solutions.

This role is ideal for students who enjoy learning quickly, thinking critically, working with emerging technologies, and transforming ideas into measurable business outcomes.

Please note: This is NOT a remote position.

It will be located at our Corporate Headquarters in Houston, Texas.

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.

Experience using at least one AI platform (e.g., ChatGPT, Claude, Microsoft Copilot, Gemini, or similar) to support learning, analysis, project work, or problem-solving.

Candidates should be able to describe how they used AI, what worked well, and how they validated results.

Familiarity with machine learning, regression analysis, simulation, and optimization models

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

Strong analytical, problem-solving, and communication skills .

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

Job Duties

Work on AI-assisted business solutions, workflows, skills, and automation opportunities

Support process improvement initiatives that drive efficiency, reliability, and cost optimization

Help transform business knowledge into reusable tools, workflows, and digital capabilities

Collaborate with business leaders, engineers, analysts, and technology teams

Present findings and recommendations to stakeholders

Learn how modern organizations combine Human expertise + AI capabilities to accelerate outcomes

Job Duties II

Job duties displayed above are not all-inclusive, site-speci...