I build production-ready Spring Boot backends for fintech, SaaS, and enterprise applications. With 5+ years of experience building real-world systems, I help businesses launch secure, scalable, and maintainable backend services that can support growth from day one. My expertise includes: • REST API development • Spring Security & authentication • PostgreSQL database design • Payment gateway integrations • Third-party API integrations • Webhooks & event processing • Cloud deployment (GCP & AWS) • Performance optimization • Microservices & clean architecture • Monitoring, logging, and observability I have worked on remittance platforms, payment gateways, creator monetization systems, subscription-based SaaS products, and mobile application backends serving real users in production. Every project includes clean, well-structured code, proper documentation, and a focus on long-term maintainability. Whether you're building a new product, modernizing an existing backend, or integrating complex payment and business workflows, I can help you deliver a reliable solution that is ready for production.