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Testing jobs in o'fallon USA

119 testing jobs found in o'fallon: showing 101 - 119

Mechanical Design Engineer
Company: Schneider Electric |

Location: O'Fallon, MO - Buffalo, NY, USA

| Salary: US$101600 - 152400 per year | Date posted: 02 Sep 2026
as required. Ability to participate in site visits, product testing, and customer engagements. Let Us Learn
Emergency Room Patient Care Tech-ft
Company: BJC HealthCare |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 01 Sep 2026
ulcer prevention measures, urinary catheter care, phlebotomy, or point of care testing as requested. Collects clinical data
Senior Software Engineer - Java
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$115000 - 184000 per year | Date posted: 31 Aug 2026
productivity. Apply strong software engineering practices, including object-oriented design, design patterns, automated testing... of software quality practices, including automated testing, code reviews, CI/CD, source control, and secure software development
Lead Data Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 31 Aug 2026
engineering standards and best practices across coding, testing, data quality, deployment automation, documentation... knowledge of CI/CD, infrastructure-as-code, automated testing, Git/GitHub, and DevOps practices for data engineering
Medical Assistant - Women's Health
Company: Mercy |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 29 Aug 2026
medical and medication histories. Assist providers during examinations and procedures. Perform basic diagnostic testing..., including urine dipstick testing, glucose testing, and EKGs, as deemed competent. Accurately document patient care and clinical
Performance Engineer
Company: Wipro Digital |

Location: O'Fallon, MO, USA

| Salary: US$60000 - 135000 per year | Date posted: 29 Aug 2026
/ Performance Testing roles with proven expertise in identifying, analyzing, and resolving application performance bottlenecks.... Hands-on experience designing and executing Load, Stress, Endurance, Scalability, and Capacity Testing for distributed
Senior Software Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$115000 - 184000 per year | Date posted: 28 Aug 2026
, customer experience, testing, and simplification) Strong understanding of software design, software architecture, data
Software Engineer Ii
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$92000 - 147000 per year | Date posted: 28 Aug 2026
delivery including solution design, development, testing, deployment, and production support while adhering to engineering.... Own end-to-end delivery including solution design, development, testing, deployment, configuration, documentation
Performance Engineer
Company: Wipro Digital |

Location: O'Fallon, MO, USA

| Salary: US$60000 - 135000 per year | Date posted: 27 Aug 2026
/ Performance Testing roles with proven expertise in identifying, analyzing, and resolving application performance bottlenecks.... Hands-on experience designing and executing Load, Stress, Endurance, Scalability, and Capacity Testing for distributed
2nd Shift Maintenance Technician
Company: O'Fallon Casting |

Location: O'Fallon, MO, USA

| Salary: US$41.25 per hour | Date posted: 26 Aug 2026
Tools & Equipment UsedMechanic hand tools Welding torches and cutting equipment Electrical meters and testing equipment Air
Principal Software Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 25 Aug 2026
, testing, code review, and release. Evaluate emerging AI capabilities and turn them into reusable patterns and reference..., including CI/CD, automation, cloud-native architecture, testing, and developer tooling. Practical, current command
Vice President Platform Engineering
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 21 Aug 2026
engineering standards covering development practices, code quality, testing, performance engineering, API architectures
Senior Software Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$115000 - 184000 per year | Date posted: 19 Aug 2026
, SLOs, Error Budgets, and production readiness reviews. Automate deployments, testing, monitoring, and operational..., software design principles, code reviews, secure coding practices, and automated testing (unit, functional, and integration
Senior Ai Engineer, Big Data & Ai Solutions
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$115000 - 184000 per year | Date posted: 15 Aug 2026
. -Knowledge of MLOps concepts including testing, automation, CI/CD, and version control. -Ability to communicate technical
Senior Software Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$115000 - 184000 per year | Date posted: 14 Aug 2026
, testing, and delivery of secure, scalable software solutions. Define requirements for new applications and customization... coverage through unit, functional, integration, and performance testing. Perform quality inspections and walkthroughs
Lead Postgresql Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 05 Aug 2026
, and related technologies. Build and enhance CI/CD integration for database provisioning, deployments, upgrades, testing
Manager, Payroll
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 01 Aug 2026
payroll implementation, testing, and stabilization activities to ensure accurate, compliant, and timely payroll delivery
Senior Specialist, Payroll Tax
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$85000 - 132000 per year | Date posted: 01 Aug 2026
. Coordinate testing of tax calculations, filings, deposits, and reporting. Maintain audit-ready documentation
Skilled - Welder
Company: QPS Employment Group |

Location: O'Fallon, MO, USA

| Salary: US$28 - 35 per hour | Date posted: 31 Jul 2026
, and weld pieces, setting up and measuring assemblies - Verify welding results by inspecting and testing welds - Update