Sr Backend Engineer - POS

Technology Stack Required: Java, Spring, Spring Boot, REST APIs, API Gateway, Microservices, POS Integration, PCI/Secure Development Practices Preferred: Kafka, Event-Driven Architecture, Payment Systems, CI/CD, Cloud, Containers ***NO SQL Senior-level experience developing enterprise Java applications. Strong hands-on experience with Java, Spring, and Spring Boot. Experience developing RESTful APIs and backend microservices. Experience with API Gateway integration and enterprise system integrations. Hands-on Point-of-Sale (POS) experience, including working directly with POS terminals or related test environments. Experience working in PCI-scoped, payment, financial, or other security-sensitive environments. Ability to work effectively onsite with cross-functional technical teams.