Job Posting Date: Jul 1, 2026

Location:
Lemont, IL, US, 60439

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Job Function: Laboratory

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

The Lab Assistant Trainee is an on-site position located at the Lemont Refinery. Performs analysis of petrochemical feed-stocks, intermediates, and finished products in a production facility laboratory. Collects, distributes and disposes of samples. Records test results in designated locations. Records tracking information and samples and stores the samples in designated locations. Maintains a safe and clean work environment. Maintains laboratory records. Exhibits competency in all relevant laboratory test methods.

Starting pay is $36.67/hour

CITGO Benefits

Application deadline: July 14, 2026.

Minimum Qualifications
High School Degree required.
Chemical or petroleum refining experience preferred
Valid driver's license and ability to drive a truck
Selected individuals must be able to climb, work outdoors, wear respirator equipment and work a rotating shift schedule in a 24-hour operation
Ability to lift up to 50 lbs.
Basic knowledge of computers
Transportation Workers Identification Credential (TWIC) Eligibility
TWIC 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 Transportation Security Administration. All candidates must be eligible to receive a TWIC in order to be considered for an offer.
To obtain more information on the Transportation Worker Identification Credential (TWIC), and to check eligibility requirements, please visit the Transportation Security Administration's website.
Job Duties

1. Drive throughout the refinery and pickup samples from designated areas at designated times. Drop off supplies for the operating units for lab samples.

2. Perform analysis on product samples including flash point, color analysis, pour and cloud point, and several others.

3. Properly and safely dispose of unused samples from all areas of the lab.

4. Communicate with appropriate Management, Shift Foremen, Technicians, and Chemists including proper notification of unusual or empty samples, special requests that should be discontinued, spare parts stock supply levels, out of compliance SQC (statistical quality control) charts, and recommend solutions to improve analysis quality and time.

5. Ability to work with little or no supervision most of the time.

6. Ensure proper housekeeping, maintain a clean and orderly work area, and assist in maintenance and cleanliness of the refinery laboratory.

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 - 1924

Nearest Major Market: Chicago