JM

Experience

From real client products with live users to academic platforms and AI tooling. Every project solves a real problem for a real person.

Freelance

6 projects
February 2026Present
Active

Nature Tours La Fortuna

Freelance — La Fortuna, Costa Rica

Description

Eco-adventure booking platform in La Fortuna, Costa Rica. The business had no digital presence and managed all reservations manually. Built a full-stack solution with real-time availability, PayPal payments, admin dashboard, and WhatsApp contact — achieving over 40 bookings in the first month through organic traffic.

Technologies Used

ViteJavaScriptNode.jsSQLNeonPayPal API
2026Present
In Development

ToDoPB — Commercial & Tourism App

Municipalidad de San Isidro de Peñas Blancas

Description

Web app for the Municipality of San Isidro de Peñas Blancas. The municipality had no central platform to promote local businesses or tourism. Building an interactive map and business directory with location, contact info, and social links to support local economic development.

Technologies Used

ReactTailwind CSSSupabaseJavaScript
2025Present
Active

SEN Cotizaciones — Proforma Generator

Grupo SEN — Freelance

Description

Internal tool for Grupo SEN to generate professional electrical service quotations as PDFs. The team managed all quotes manually — slow, error-prone, and inconsistent. Delivered a lightweight frontend where staff configure line items and export formatted proformas in seconds. In active use for over 6 months.

Technologies Used

ReactJavaScriptTailwind CSSCloudflare Pages
2025Present
Active

Grupo SEN — Corporate Website

Grupo SEN — Freelance

Description

Corporate site for a regional electrical solutions company in northern Costa Rica. Without an online presence, new clients came only through word of mouth. Designed a clean professional site with service catalog, work gallery, and contact forms — giving Grupo SEN a credible digital identity.

Technologies Used

ReactTailwind CSSJavaScript
2025Present
Active

La Rancha — Restaurant Website

La Rancha — Freelance

Description

Digital presence for a well-known local restaurant. Without a digital menu or online reservations, new customers had no way to discover the offering and all bookings went through phone calls. Built a mobile-friendly site with a photo-rich menu and a WhatsApp reservation flow, increasing the restaurant's digital reach.

Technologies Used

ReactTailwind CSSJavaScriptCloudflare Pages
2026Present
In Development

Laras Food — Restaurant & Order System

Laras Food — Freelance

Description

Restaurant promotion site with an interactive menu and WhatsApp-based order management. The restaurant had no digital tool for incoming orders, causing confusion during busy periods. Building a visual menu with a structured WhatsApp ordering flow that routes orders directly to staff, reducing errors and improving throughput.

Technologies Used

ReactTailwind CSSJavaScriptCloudflare Pages

Academic Assistance

3 projects
September 2024Present
Active

Digital Mathematics Journal

Tecnológico de Costa Rica — Cátedra de Matemática

Description

Complete redesign of the Revista Matemática Educación e Internet website at TEC. The previous site was built with plain JavaScript and was not indexed by Google Scholar, severely limiting the journal's academic reach. Migrated to a modern stack fully optimized for academic SEO, achieving proper Google Scholar indexing and a fast, elegant interface.

Technologies Used

Next.jsReactTailwind CSSJavaScript
August 2024Present
Active

VS Code Extension: AI Unit Test Generator for Unity

Tecnológico de Costa Rica

Description

VS Code extension for automated unit test generation in Unity with maximum coverage. Extensive manual research was needed to determine which AI model performed best for Unity testing, consuming valuable team time. Built a tool that automates that research process and turns it into a practical solution, enabling efficient comparison between AI models via API key configuration.

Technologies Used

JavaScriptTypeScriptVS Code APIOpenAIAnthropicOpenRoutersUnityC#
August 2024Present
Active

Mathematical Article Markup for SciELO

Tecnológico de Costa Rica — Cátedra de Matemática

Description

HTML to XML markup of articles from the Revista Matemática at TEC following SciELO's academic indexing standards. The journal was not indexed in SciELO due to a failed previous markup process, limiting its international visibility. Implemented a standardized markup workflow that fully meets SciELO's requirements, enabling successful indexing across multiple volumes.

Technologies Used

HTMLXMLSciELO PC ProgramsXML Package Maker (XPM)SciELO SPS ValidationMarcalyc