Projects / Applied engineering

Systems built from the inside out.

A selection of APIs and full-stack products presented through their architecture, security, data, and delivery decisions.

Featured projects

Three different contexts with the backend at the center of the solution.

03 / 06

Technologies

Java 21Spring BootSpring SecurityJWTPostgreSQLDockerNext.js

01 / Production product

Live

CVnoAlvo

Web application for adapting resumes to specific job openings, with compatibility analysis, ATS-focused artifact generation, Java/Spring backend, PostgreSQL, and JWT authentication.

Solution flow

Next.js

Java 21 API

Spring Security

PostgreSQL

External services

Engineering evidence

Product: A guided workflow that turns a job opening into ATS-focused resume artifacts.
Backend: Java/Spring services with JWT security and PostgreSQL persistence.
Delivery: Full-stack product running in production with external integrations.

Live demo

Technologies

Java 21Spring Boot 3Spring SecurityOAuth2JWTPostgreSQLJPADocker

02 / Backend API

Public deployment

DSCommerce

E-commerce REST API with products, categories, users, orders, OAuth2/JWT authentication, role-based authorization, JPA/Hibernate persistence, and OpenAPI documentation.

Solution flow

REST API

Spring Security

Service layer

JPA / Hibernate

PostgreSQL

Engineering evidence

Security: OAuth2/JWT authentication with role-based authorization.
Domain: Products, categories, users and orders modeled as API resources.
Delivery: OpenAPI documentation, Maven build and containerized deployment.

Source Live demo

Technologies

Node.jsExpressReactTypeScriptWebSocketPostgreSQLJWT

03 / Full-stack system

Private product

SYSMP

Full-stack deadline management system with JWT authentication, an admin dashboard, PostgreSQL, and real-time communication for operational follow-up.

Solution flow

React

Express API

JWT

WebSocket

PostgreSQL

Engineering evidence

Operations: Administrative workflows for users, documents and deadlines.
Real time: WebSocket communication for operational status updates.
Security: JWT authentication protecting administrative access.

Source

Other work

Web, mobile, and study projects that complement my full-stack practice.

Scheduling application

Dragenda

Healthcare scheduling application with a React frontend, Node.js/Express backend, SQLite persistence, and separate frontend/backend deployments on Vercel and Render.

ReactReact NativeBootstrapNode.js

Institutional website

Website - Santa Rita church

Responsive institutional website for Santa Rita Church, built with React, TypeScript, Vite, and Tailwind CSS for clear content organization and mobile access.

React.jsTypeScriptTailwind CSSVite

Applied studies

DIO - Machine Learning

Study repository from the DIO Machine Learning Practitioner Bootcamp, with Python notebooks for facial recognition, image recommendation, and virtual assistant experiments.

Jupyter NotebookPythonKerasR