Senior Java developer | 7+ years | java, spring

Seasoned Java Software Engineer with 7+ years of experience in fintech and ERP systems, specializing in payment processing, transaction orchestration, and high-performance backend solutions. Expertise spans payment gateways (Visa, Mastercard, Elavon), ISO8583/ISO20022 compliance, and microservices architecture, with a proven track record of designing secure, scalable systems for global platforms like PayPal and Altimetrik.

Core Expertise

• Payment Systems: End-to-end transaction flows (Auth, Capture, Refund, Void), PCI compliance, and integration with processors such as Wells Fargo, Bank of America, and Chase.
• Backend Development: Proficient in Java 8+, Spring Boot, Hibernate, and Kafka for real-time and batch processing.
• DevOps & Observability: Skilled in Jenkins, ControlM, Kibana, and Datadog for CI/CD, logging, and system monitoring.
• Full-Stack Proficiency: Frontend development with Angular 7+, JavaScript, and RESTful API design.