Our Favorite CITGO Perks are. 9/80 Work Schedule in the Summer. Relocation. Relocation Benefits are not available for this position. Note. Employer will not sponsor visas for position. Job Summary. This is a year-round internship located in Downers Grove IL supporting our Lemont Refinery. Candidate will work part-time during the school year while attending classes, and will work full-time during the summer months. . Provide procurement support i...