Senior Java Payment Systems Engineer

Position: Senior Java Payment Systems Engineer.Location: Midwest, USA (Onsite presence required)Duration: Long term contractJob SummaryWe are looking for an experienced Senior Java Payment Systems Engineer to design, develop, and support high-volume, real-time payment processing applications. The ideal candidate will have strong hands-on experience with payment switching platforms, transaction processing, and enterprise Java development.This role involves building secure, scalable, and high-performance payment solutions while supporting mission-critical financial transaction systems.Required Skills8+ years of hands-on experience in Java application development.Strong experience working with payment transaction processing or payment switching systems.Expertise in Core Java, Java 8/11/17, Spring Boot, and Microservices.Experience developing RESTful APIs and enterprise integrations.Strong understanding of the payment transaction lifecycle.Knowledge of ISO 8583 messaging standards.Experience with card payments, EMV, ATM, and POS transaction flows.