My Portfolio - full-time

• bitlauncher

  BitLauncher supports AI startups by democratizing access to resources and funding through a decentralized, open-source platform. 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.
  

  

  Stack: TypeScript, Solidity, Hardhat, NextJS, Viem, Wagmi, NodeJS, PostgreSQL

  https://github.com/bitcashorg/smartevm

• ZTX

  ZTX, a web3 metaverse platform, enables creators to build, play, and earn. Supported by Jump Crypto and ZEPETO, it integrates blockchain for 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.
  

  

  Stack: WebGL, Ethereum, Ethers, NFT, AWS, Node.js, ReactJS, NextJS

• RareMint

  RareMint digitizes real-world sports collectibles as NFTs, offering a digital collectible experience.
  

  I led technical efforts at RareMint to enhance the NFT marketplace's performance and maintainability. Additionally, I supported integrating the platform with the Polygon network for auctions.
  

  

  Stack: EVM, Ethers, NFT, React, GCloud, NodeJS, GraphQL, TypeScript

• EOS Costa Rica

  EOS Costa Rica provides infrastructure for EOSIO blockchains and custom smart contract development.
  

  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.
  

  

  Stack: EOS, C++, PostgreSQL, Cloud, NodeJS, GraphQL, ReactJS

  https://github.com/eoscostarica

• 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.
  

  

  Stack: AWS, Serverless, React Native, React, NodeJS, Biometrics

• American Express

  The American Express website enables cardmembers to manage their financial accounts, offering features like balance checks, transaction views, and secure payments.
  

  My responsibility was focused on front-end development, including Object-Oriented JavaScript, AJAX for a fluid user experience, and implementing A/B Testing and usage analytics.
  

  

  Stack: JSP (Struts), Omniture, Adobe mBox, Facebook API, Dojo, jQuery, CSS3

• AMC Yeah TV Facebook App

  An online movie streaming service allows watching movies in chapters with detailed information and interactive games.
  

  I was responsible for the frontend architecture design, integrating the game app with Facebook and the backoffice system with Brightcove web services for video streaming and editing.
  

  

  Stack: HTML5, PHP, Facebook API, AJAX, Facebook Credits, Handlebars, Brightcove API, require.js