Abdul R.

Helping startups and businesses build secure, scalable backend systems that are designed for production from day one. With 14+ years of professional software engineering experience, I specialize in Java, Spring Boot, PostgreSQL, REST APIs, authentication & authorization, and AI integrations. My focus is building backend architectures that are clean, maintainable, thoroughly tested, and ready to scale. I have delivered enterprise applications across SaaS, education, publishing, healthcare, and business management domains. My experience ranges from designing new systems to modernizing legacy applications and exposing reliable APIs consumed by web and mobile applications. Core expertise • Java 25 • Spring Boot • Spring Security • REST API Design • PostgreSQL • Hibernate / JPA • JWT Authentication • OpenAPI / Swagger • Flyway • JUnit & Mockito • Testcontainers • Maven • Docker • GitHub Actions (CI/CD) • AI Integration (OpenAI APIs, Spring AI) • Next.js backend integration What I can help you with ✔ Build a new Spring Boot backend ✔ Design secure REST APIs ✔ Authentication & authorization ✔ PostgreSQL database design ✔ AI-powered application features ✔ Performance optimization ✔ Refactoring legacy Java applications ✔ Bug fixing and long-term maintenance I believe great software is more than code. Clear communication, thoughtful architecture, comprehensive testing, and reliable delivery are just as important as choosing the right technology. If you're looking for an experienced backend engineer who can contribute beyond implementation and help make sound technical decisions, I'd be happy to discuss your project.