Senior Software Engineer

Mastercard

O Fallon, Missouri, United States of America Posted October 27, 2026

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On-site Full-time Senior
Job Description

Become part of our team as a Senior Software Engineer, responsible for designing and developing secure, scalable software solutions. Lead system development, mentor team members, and ensure adherence to Mastercard standards. Ideal for experienced engineers with strong programming skills and a background in software architecture and delivery.

Required Skills
software development
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