10,000+ Software Engineering jobs in O'Fallon, MOSet Job AlertWant more jobs like this?We’ll send you jobs that match this search criteria. Get Software Engineering jobs in O'Fallon, MO 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.Senior Software EngineerAt Mastercard -O'Fallon, MOPosted on Mar 27View Job (USA) Freight Flow AssociateAt Walmart -O'Fallon, MOPosted on Mar 1View Job Microelectronic Technician 2At Northrop Grumman -Maryland Heights, MOPosted on Feb 8View Job Agency ProducerAt Farmers Insurance Agencies -Wildwood, MOPosted on Dec 16View Job 2025 Summer Intern: Assoc QA AnalystAt Spectrum -Maryland Heights, MOPosted on Sep 26View Job Electrical Engineer - ManufacturingAt Saint-Gobain -O'Fallon, MOPosted on Dec 7View Job Data Entry Clerk Work From Home - Part-Time Focus Group Participants (Up To $750/Week)At Apex Focus Group Inc. -St. Peters, MOPosted on Mar 30View Job Manager, Software EngineeringAt Mastercard -O'Fallon, MOPosted on Mar 27View Job (USA) Optometrist Pre-Grad Intern - WalmartAt Walmart -O'Fallon, MOPosted on Jan 12View Job Laser Technician 1At Northrop Grumman -Maryland Heights, MOPosted on Jan 19View Job Agency ProducerAt Farmers Insurance Agencies -O'Fallon, MOPosted on Oct 3View Job Principal Software EngineerAt Mastercard -O'Fallon, MOPosted on Mar 21View Job (USA) Optometrist Pre-Grad Intern - WalmartAt Walmart -Maryland Heights, MOPosted on Jan 12View Job Agency ProducerAt Farmers Insurance Agencies -Maryland Heights, MOPosted on Sep 23View Job Technical Product OwnerAt Mastercard -O'Fallon, MOPosted on Mar 19View Job Senior Software Engineer In Test (SDET)At Mastercard -O'Fallon, MOPosted on Feb 12View Job Biz Ops Engineer IIAt Mastercard -O'Fallon, MOPosted on Feb 2View Job Lead Software Development EngineerAt Mastercard -O'Fallon, MOPosted on Feb 2View Job Lead FinOps AnalystAt Mastercard -O'Fallon, MOPosted on Mar 28View Job Lead Quality Assurance AnalystAt Mastercard -O'Fallon, MOPosted on Mar 27View Job