Description
Mastercard is hiring a Senior Software Engineer for its Transaction Stream team in O’Fallon, Missouri. The role focuses on building scalable, secure, observable, and resilient software and automation solutions for real-time payment systems. Responsibilities include designing and maintaining test frameworks, CI/CD pipelines, performance and reliability testing, secure coding, code reviews, architecture contributions, and production troubleshooting. The position requires Java, Spring Boot, Spring Data JPA, SQL, data structures and algorithms, and experience with Linux, web applications, automation, and quality engineering. The listed base salary is $115,000–$184,000 USD.
