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.

Built Bitcash's backend in Node.js: matching engine, realtime chat, and the EOS indexer.

Built Knowledge.io's token and marketplace services as serverless Node.js functions.

Founded Costa Rica JS in 2010; the community grew past 2,000 developers.

• 

  Bitlauncher

  An AI and crypto launchpad for token sales, batch auctions, cross-chain wallets, bridges, and indexed market data.

• 

  Masterbots

  A platform for domain-specific AI assistants with specialized interfaces, social sharing, and multilingual support.

• 

  ZTX

  A Web3 virtual world with cryptocurrency-backed digital assets, a WebGL wallet connection, and a Next.js experience.

• 

  RareMint

  A Polygon marketplace for tokenized sports collectibles with indexed NFT data, auctions, and WalletConnect.

• 

  Bitcash

  A fiat-to-stablecoin and cryptocurrency exchange with peer-to-peer trading, realtime chat, browser signing, and EOS data.

• 

  ChainGraph

  An open-source GraphQL toolkit for indexing, streaming, and querying EOSIO and Antelope blockchain data.

• 

  EOS Costa Rica

  A blockchain infrastructure and development company operating EOSIO validators and delivering public and private-chain systems.

• 

  Knowledge.io

  A tokenized knowledge platform with an ERC-20 token, marketplace, wallet dashboard, and mobile trivia game.

• 

  Wink

  Costa Rica's first neobank, delivered through a React Native mobile app, AWS backend, partner-bank APIs, and biometrics.

• 

  Eat Arcade

  An SMS restaurant subscription service combining curated dishes, text messaging, online payments, and a web application.

• 

  Jockey Hollow Bar and Kitchen

  A responsive site for Jockey Hollow Bar and Kitchen, a historic mansion with four dining concepts.

• 

  Jockey Hollow Bar and Kitchen Menu Kiosk App

  A responsive tablet menu kiosk with Google Sheets updates and performance tuned for restaurant service.

• 

  Tractor Supply

  A React Native retail app with product browsing, account tools, and augmented-reality previews powered by ViroAR.

• 

  Photo and Go

  An online photo-product platform with a custom editor and backend integration into existing commerce systems.

• 

  4Tius Fitness Data Tracker

  A Fitbit-connected fitness data platform with a responsive analytics dashboard and secure API.

• 

  Costa Rica JS

  A JavaScript community founded in 2010 that grew past 2,000 developers through meetups, NodeSchool, and JSConf Costa Rica.