Dario Alessandro P.

I build robust, production-ready backend systems and scalable web applications using Java and Spring Boot. Whether you need to architect new RESTful APIs, optimize database performance, or integrate third-party platforms into an existing codebase, I deliver clean, maintainable, and well-documented software. What I bring to your project: - Backend Architecture: Designing secure, modular REST APIs and microservices with Spring Boot. - Database Design & ORM: PostgreSQL schema design, indexing, and data access layers with Spring Data JPA / Hibernate. - Integration & Security: Authentication/authorization (OAuth2, JWT, Spring Security) and payment or external service integrations. - Performance & Reliability: Refactoring legacy code, fixing bottlenecks, unit/integration testing (JUnit, Mockito), and Docker containerization. - Full-Stack Execution: Connecting backend services to responsive web frontends using React and TypeScript. Core Tech Stack: - Languages: Java (17/21), TypeScript, Python - Frameworks & Libraries: Spring Boot, Spring Security, Spring Data JPA, Hibernate, React - Databases: PostgreSQL, MySQL, Redis - DevOps & Tools: Docker, Git/GitHub, Maven/Gradle, Postman, CI/CD pipelines I prioritize clean architecture, strict business logic adherence, and open communication to ensure your project launches on schedule. Have an API to build, a backend to scale, a migration, or a technical blocker to solve? Send me a message and let's discuss your requirements.