Job Description

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

Mechanical/Civil Engineering Intern

The CITGO Lemont Refinery is searching for a Mechanical Engineer intern who will provide assistance on various projects for either the Project Engineering, Reliability or Maintenance Department and will become familiar with the refinery organization and work processes while learning refinery safe work practices. The intern will work on various projects throughout the refinery under the direction of a more senior engineer. This position is a paid 12-week summer internship. A presentation covering all aspects of the internship experience and accomplishments will be expected at the end of the term.  This position is located on-site in Lemont, Illinois or Downers Grove, Illinois.

Expected Hourly Pay: $26.13 - $34.85

Application deadline November 2, 2025

Minimum Qualifications

• Must be enrolled in a Mechanical Engineering or Civil Engineering Bachelor Degree program
• Must be at least a sophomore status in college (completion of freshman year) with an overall GPA of 3.0 or above
• Available to work forty hours (40) per week
• Must have valid driver’s license
• Candidate must possess strong analytical and communication skills and be able to work in a team environment
• Transportation Worker Identification Credential (TWIC) Eligibility

  • Eligibility Requirements: The Maritime Transportation Security Act requires all persons who will need unescorted access to a regulated facility to have a valid Transportation Worker Identification Credential (TWIC), issued in accordance with the rules established by the United States Coast Guard and the Transportation Security Administration.

    The following link lists the eligible criteria for all persons trying to obtain a TWIC card 

Job Duties

Interns will be responsible for providing assistance with various engineering duties which may include: basic engineering research, supporting the development of various engineering packages, updating engineering records and various databases and provide technical assistance. Consult with Senior Project Engineers in the group, and complete site visits in support of ongoing engineering efforts. Site visits may include witnessing of site activities and scoping and verification for projects. Complete End of Internship Summary presentation.

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
• 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 - 1643 

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