Javier

Software Developer · Backend & Web Systems

Ruby on Rails · FastAPI · PostgreSQL · JavaScript · HTML · CSS

Contact me

Projects

Yike — Community Health Field App

Mobile-first system for community health workers to collect and manage household and visit data with offline support and geolocation.

  • Designed data model for families, visits, agents and zones
  • Implemented REST API and offline-first sync strategy
  • Focused on traceability and longitudinal data
FastAPI · PostgreSQL · React Native · SQLite

myLocal — Restaurant Management Platform

Web application for restaurants to manage reservations, menus and daily operations, including public menus accessible via QR.

  • Multi-tenant architecture (multi-restaurant)
  • Public and private access separation
  • Clean domain modeling and Rails best practices
Ruby on Rails · PostgreSQL · Hotwire

Organizational Chart System

Dynamic organizational chart with editable hierarchy, PDF export and responsive layout.

  • Inline editing with Turbo Frames
  • Printable and PDF-friendly views
  • Responsive tree visualization
Ruby on Rails · Turbo · SCSS · WickedPDF

Skills

Backend

  • Ruby on Rails
  • FastAPI
  • REST APIs
  • PostgreSQL

Frontend

  • HTML5
  • CSS3 (Flexbox, Grid)
  • JavaScript
  • Responsive Design

Tools

  • Git / GitLab / GitHub
  • Docker (basic usage)
  • Linux
  • Agile workflows

Experience

Software developer and computer science professor with experience building real-world systems for public health, education and small businesses. Strong focus on data modeling, maintainability and clarity over hype.

Used to working end-to-end: from requirements and domain analysis to implementation, deployment and iteration based on feedback.

Contact

Email: javier@email.com

GitHub · LinkedIn