10,000+ Systems Engineer jobs in O'Fallon, ILSet Job AlertWant more jobs like this?We’ll send you jobs that match this search criteria. Get jobs in O'Fallon, IL delivered to your inbox every week.Enter emailSend me The Muse newsletters for the best in career advice and job search tips.Get Jobs!By signing up, you agree to our Terms of Service & Privacy Policy.Systems Engineer / ArchitectAt Leidos -O'Fallon, ILPosted on Apr 4View Job System AdministratorAt Spectrum -St. Louis, MOPosted on Apr 1View Job Developmental EngineerAt United States Air Force -Edwardsville, ILPosted on Apr 2View Job Senior Information Systems Analyst (Computer Sys Security Anlyst 3) - 4275At Alion Science and Technology -O'Fallon, ILPosted on Dec 7View Job Developmental EngineerAt United States Air Force -Belleville, ILPosted on Apr 2View Job Developmental EngineerAt United States Air Force -Belleville, ILPosted on Apr 2View Job Developmental EngineerAt United States Air Force -Belleville, ILPosted on Apr 2View Job Developmental EngineerAt United States Air Force -St. Louis, MOPosted on Apr 2View Job Developmental EngineerAt United States Air Force -O'Fallon, ILPosted on Apr 2View Job Developmental EngineerAt United States Air Force -St. Louis, MOPosted on Apr 2View Job Developmental EngineerAt United States Air Force -St. Louis, MOPosted on Apr 2View Job Developmental EngineerAt United States Air Force -St. Louis, MOPosted on Apr 2View Job Developmental EngineerAt United States Air Force -Edwardsville, ILPosted on Apr 2View Job Developmental EngineerAt United States Air Force -O'Fallon, ILPosted on Apr 2View Job Developmental EngineerAt United States Air Force -Edwardsville, ILPosted on Apr 2View Job Developmental EngineerAt United States Air Force -St. Louis, MOPosted on Apr 2View Job Developmental EngineerAt United States Air Force -O'Fallon, ILPosted on Apr 2View Job Developmental EngineerAt United States Air Force -Edwardsville, ILPosted on Apr 2View Job Developmental EngineerAt United States Air Force -St. Louis, MOPosted on Apr 2View Job Developmental EngineerAt United States Air Force -O'Fallon, ILPosted on Apr 2View Job