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 recruiting a Senior Software Engineer to design and maintain Java-based backend services, focusing on secure, scalable distributed systems. You will contribute to architectural decisions and deliver reliable software solutions. Ideal candidates have strong backend engineering experience and expertise in Java, Spring Boot, and distributed systems.

Required Skills
software development Java distributed systems Spring Spring Boot
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