Lead Software Engineer

Mastercard · O'Fallon, MO, US

Mastercard is hiring a lead Lead Software Engineer in O'Fallon, MO, US. What you'll do: code review, system design, and testing / qa, work across the payments, infrastructure, and security domains. Qualifications: familiarity with TypeScript, Java, C#, React, AWS, and Azure. Part-time, on-site, paying $140K–$231K.

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Salary: $140k–$231k · parttime · onsite
Source: mastercard.wd1.myworkdayjobs.com
Original link: https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Lead-Software-Engineer_R-277786
ATS: Workday
Posted: 2 days ago (2026-05-14)
Status: active

Skills: TypeScript, Java, C#, React, AWS, Azure, Kubernetes, Terraform

Topics: Payments, Infrastructure, Security, Compliance

Activities: Code review, System design, Testing / QA

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