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

We are expanding our team: As a Senior Software Engineer, you will design and develop scalable, secure Java-based backend applications, collaborating with cross-functional teams to deliver robust solutions. This role suits experienced engineers with strong backend expertise and a passion for driving technical excellence in a dynamic environment.

Required Skills
software development Java collaboration cross-functional collaboration
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