Software Developer Internship
January 2026 - march 2026
IntelliVerse - New York, United States
Development and maintenance of multiple web and mobile applications at IntelliVerse, an integrated
platform that includes OneClickTrip (AI-powered trip planner), DietTracker, SchoolKiller,
StyleTranslator, and other services.
- Implementation of a multi-model AI system with 5 providers (Google Gemini, Groq, Mistral AI,
OpenRouter, HuggingFace)
- Backend development with Flask/Python and REST API endpoints
- Integration of parallel execution strategies (RACE, FALLBACK, ALL) for response optimization
- Development of native Android applications with Kotlin and Gradle
- Implementation of modular and reusable architecture
- Deployment and configuration on PythonAnywhere
- Handling of external APIs and management of quotas/limits
- Comprehensive technical documentation of systems
Technologies: Python, Flask, JavaScript, Kotlin, Android, Git, REST APIs, AI/ML
APIs,
Docker
Volunteer Software Engineer
February 2026 - March 2026
Gemelas Villalobos - Costa Rica
Development of a modern and responsive web application for Gemelas Villalobos, a custom embroidery
and tailoring business. My contribution spanned all stages of the project, including user interface
design, React component architecture, responsive layout implementation, and integration of
interactive features to showcase the business's products and services.
- Development of a Single Page Application (SPA) with React 19 using state-based navigation and
reusable components
- Design and development of modular components: Navbar, Footer, Modal, ContactMap,
PortfolioGallery, ContactSchedule, and FAQ
- Implementation of a responsive portfolio gallery displaying 21 embroidery products in a
multi-column CSS Grid layout
- Development of an interactive FAQ section with animated accordion transitions for the contact
page
- Integration of an embedded Google Maps iframe with lazy loading for the business location
- Construction of a multi-section Services page with step-by-step visual process, icons, and
badges
- Development of a reusable Modal component with keyboard accessibility (Escape key), ARIA
attributes, and close animations
- Development of a responsive interface adaptable to mobile devices, tablets, and desktops
- Collaborative development using Git branching strategy with feature branches, QA branch, and
pull requests on GitHub
- Application of utility-first styling with Tailwind CSS 4 combined with modular CSS per component
Technologies: React 19, Tailwind CSS 4, React Icons 5, Vite 6, CSS3, JavaScript
ES6+, Git, GitHub
Volunteer Software Engineer
November 2025 - January 2026
Delicias Fortuneñas Bakery - San Carlos, Costa Rica
Development of a modern and responsive web application for Delicias Fortuneñas Bakery as part of
the
University Community Work TC-563 at the University of Costa Rica. My contribution was evident in all
stages of the project development, including the implementation of agile methodologies, user
interface design, React component development, and integration of interactive functionalities.
- Implementation of Scrumban agile methodology for project management
- Development of Single Page Application (SPA) with React 19.2 and reusable components
- Implementation of routing with React Router DOM for navigation between pages (Home, Products,
About, Contact)
- Design and development of modular components: Navbar, Footer, ProductCard, ImageSection
- Creation of an interactive product catalog with cards organized by categories
- Integration of an interactive map with React Leaflet for the bakery's location
- Development of a responsive interface adaptable to mobile devices, tablets, and desktops
- Implementation of state management and navigation with React Hooks
- Performance optimization with lazy loading of images and components
- Unit testing of components with React Testing Library
Technologies: React 19.2, React Router DOM 7.12, React Leaflet 5.0, React Icons
5.5,
CSS3, JavaScript ES6+, React Testing Library, Git, GitHub
Freelance Software Engineer
August 2025 - December 2025
Quality and Life Foundation - FUNCAVIDA - San Ramón, Costa Rica
Comprehensive development of a management system for a non-profit organization dedicated to
supporting
cancer survivors. My contribution spanned all key stages of the project, including the
implementation
of the Scrum methodology, database design and management, API development, quality assurance (QA)
tasks, as well as back-end and front-end design.
- Implementation of Scrum agile methodology for project management
- Design and development of relational database with MySQL and Prisma ORM
- Development of RESTful API with Node.js and Express.js following MVC architecture
- Implementation of JWT authentication system and role-based access control (RBAC)
- Development of 9 complete modules: Users, Survivors, Sponsors, Volunteers, Locations, Active,
among others
- Creation of responsive web interface with JavaScript ES6+, HTML5, CSS3, jQuery, and Chart.js
- Development of Excel export system with corporate styles using xlsx-js-style
- Implementation of interactive data visualizations with Chart.js
- Quality assurance (QA) and testing of the complete system
- Technical documentation of 18+ documents and approximately 15,000 lines of code
Technologies: Node.js, Express.js, MySQL, Prisma ORM, JWT, JavaScript ES6+, HTML5,
CSS3, jQuery, Chart.js, xlsx-js-style