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

Take on the role of Senior Software Engineer to drive performance improvements for new applications supporting the Authorization payment network. Collaborate with development teams to enhance scalability and reliability, focusing on automation and performance solutions. Ideal for experienced engineers with strong Java Spring Boot expertise and a passion for system optimization.

Required Skills
software development collaboration Java Spring Spring Boot
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