Node.js

A JavaScript runtime built on Chrome's V8 JavaScript engine, designed to build scalable network applications.

Node.js provides a JavaScript runtime for server-side applications with an event-driven, non-blocking I/O model that optimizes throughput and scalability.

It enables building fast, lightweight microservices, API layers, and real-time applications with a unified JavaScript codebase across client and server.

Experience:

Built a custom EVM event indexer for BitLauncher using Node.js with Viem subscriptions, efficiently processing blockchain data in real-time.

Developed ChainGraph, an open-source GraphQL toolkit for blockchain data, using Node.js for real-time data streaming and event processing.

Created BitcashBank backend infrastructure with Node.js microservices, handling millions in transaction volume across Latin America.

Led the architecture of Knowledge.io's Ethereum token system and supporting infrastructure using serverless Node.js functions.

Founded Costa Rica JS, which became Central America's largest JavaScript community, promoting collaborative open-source development.

bitlauncher

BitLauncher is an AI and crypto launchpad platform that provides early access to promising AI unicorn startups through token sales and auctions. It features a batch auction system for token sales, ensuring fair and transparent price discovery. Participants bid during a fixed period, and tokens are distributed at a uniform price, eliminating manipulation and ensuring equal opportunities for all investors.

Masterbots

Masterbots.ai is a platform that aims to elevate AI beyond ChatGPT by providing specialized chatbots, social sharing features, and user-friendly innovation. It features domain-specific AI chatbots that can perform more advanced tasks beyond basic information lookup or simple conversations.

ZTX

ZTX is a web3 metaverse platform backed by Jump Crypto and ZEPETO (a subsidiary of Naver Z Corp with over 200M users). The platform enables creators to build, play, and earn through blockchain-based NFT trading. As a software consultant in the early stages of ZTX, I was responsible for developing the react app to host the metaverse and the WebGL/EVM wallet integration.

RareMint

RareMint digitizes authenticated real-world sports collectibles as NFTs on the Polygon network, offering fractional ownership and trading of high-value items. The platform partners with professional sports organizations to ensure authenticity. I led technical efforts at RareMint to enhance the NFT marketplace's performance and maintainability, including the integration with Polygon network for efficient NFT auctions.

bitcashBank

Bitcash is an established crypto banking platform with over 50,000 users across Latin America, handling millions in transaction volume through its regulated financial infrastructure. The platform integrates with local banking systems in multiple countries and features BitcashDAO for community governance of its decentralized finance products. At Bitcash, my role from the start focused on infrastructure design, tech recruitment, and developer training. I later transitioned to a consulting role to guide the platform's continuous adaptation and success.

ChainGraph

This real-time GraphQL toolkit is designed for EOSIO/Antelope blockchain applications, offering features like data subscriptions and querying multiple blockchains. As a personal side project during my time at Bitcash, I was responsible for the architectural design, technology selection, and coding of the toolkit, including a real-time blockchain data streaming package.

EOS Costa Rica

EOS Costa Rica is a leading block producer and infrastructure provider for EOSIO/Antelope blockchains, maintaining critical network nodes and developing custom blockchain solutions. The company is recognized for its contributions to the EOS mainnet and enterprise blockchain implementations. Joining EOS Costa Rica at its inception, I played a key role in the EOS mainnet launch, managed validators for multiple networks, and helped establish the custom development services division. My major contribution included leading the architecture for a custom private blockchain for Grant Thornton.

Knowledge.io

Knowledge.io was one of the first blockchain platforms aimed at knowledge-sharing with a token-based reward system. The project successfully completed its ICO in 2018, raising funds to build a decentralized knowledge ecosystem that included partnerships with advertising networks to monetize user expertise. My role at Knowledge included leading the architecture of the Ethereum-based token and supporting systems for their successful ICO, and forming a skilled development team across three countries.

Wink

Wink, Costa Rica's first neo-bank, offers a mobile app for online banking, eliminating the need for physical branch visits. I developed the first version of Wink's mobile app and backend services within AWS. My role involved API integration with partner banks and forming a dedicated development team.

Eat Arcade

I designed and developed an SMS subscription system featuring curated dishes from New York City's finest restaurants. The system offered a unique dining experience through mobile technology. My responsibilities covered the entire development process, from system design to implementation.

Jockey Hollow Bar and Kitchen

Jockey Hollow Bar and Kitchen, located in Morristown's historic Vail Mansion (built 1917), is a renowned multi-concept restaurant by acclaimed restaurateur Chris Cannon. The venue features The Oyster Bar, The Vail Bar, The Dining Room, and The Rathskeller, earning recognition from The New York Times and other major publications. My work focused on developing the main responsive landing page, ensuring an inviting and informative digital gateway to the restaurant's offerings.

Jockey Hollow Bar and Kitchen Menu Kiosk App

At Jockey Hollow Bar & Kitchen, I developed the Menu Kiosk App, a responsive web application for tablet kiosks. It simplifies menu selection for patrons and uses Google Spreadsheets for easy updates. As the sole developer, my role involved creating an intuitive and efficient digital menu solution, enhancing the dining experience.

Tractor Supply

Tractor Supply Company, a Fortune 500 company with over 2,000 stores and $10B+ in annual revenue, is America's largest rural lifestyle retailer. Their mobile app serves millions of customers with features like product browsing, exclusive offers, account management, and augmented reality product previews. As a consultant, I enhanced the app's performance and code quality, and developed its augmented reality feature, improving user experience and engagement.

Photo and Go

MyPhoto.com is an online platform for creating personalized photo products. I led the development of an innovative photo editor app and backend services integrated with existing e-commerce systems. My leadership role encompassed technical direction and execution, focusing on creating a smooth and intuitive user experience.

4Tius Fitness Data Tracker

The 4Tius app is a centralized platform for monitoring fitness data, integrating with Fitbit. It includes a web dashboard and API. As a Fullstack software engineer, I led the development of both the web application and backend systems, ensuring seamless integration and user-friendly functionality.

Costa Rica JS

Costa Rica JS, founded in 2010, grew to become Central America's largest JavaScript community with over 2000 developers. The community played a crucial role in fostering the region's tech ecosystem during the rise of Node.js, organizing major events like NodeSchool International Day and hosting speakers from companies like Mozilla and Netflix. As founder, I organized regular meetups, workshops, and the annual JSConf Costa Rica, helping establish Costa Rica as a growing tech hub in Latin America.