My Portfolio - all

LegalAgent

AI assistant with both voice and chat capabilities into LegalAgent's React Native (Expo) mobile app. This assistant empowers lawyers to swiftly access case information, providing contextual legal support, document summaries, and procedural guidance.



Opyn

Opyn is a decentralized options protocol on Arbitrum that raised $6.7M Series A funding led by Paradigm. Their main product Squeeth is a notable DeFi-native derivative. I implemented their initial trading interface and data indexing setup for Arbitrum Testnet using Next.js, Ponder, and viem/wagmi.



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.



Emanate

Emanate is a blockchain-based music platform that raised over $2M in funding and partnered with major artists and labels. The platform features their native EMT token for artist payments and uses smart contracts to ensure transparent royalty distribution. At Emanate, I maintained the ReactJS web app streaming platform and developed back-office tools for artist revenue distribution, working with a distributed team across Australia, Europe, and the Americas.



Make Sense Labs

Sense.chat, developed by Sense/Make Sense Labs (backed by Tim Draper and other notable investors), was one of the first crypto messaging apps to implement self-sovereign identity and encrypted communications on blockchain. The app gained recognition at major tech conferences and blockchain events. My role at Sense involved enhancing the React Native app's performance and integrating it with the EOS mainnet for secure messaging and token functionality.



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.



EOS Rate

EOS Rate is a community-driven tool for rating EOS Block Producers, featuring a radial graph and community input stored on the blockchain. In this project, I was responsible for the technical architecture and selecting the appropriate technology.



Fantasy Top Shots

This mobile app game built on NBA Top Shot NFTs was developed for the 2022 Flow Hackathon. It integrates with NBA Top Shot's marketplace, which has processed over $1B in NFT transactions and is officially licensed by the NBA. The game received recognition at the Flow Hackathon among hundreds of participating projects. My contribution to this project was in the game's design and development, utilizing my skills in blockchain technology and mobile app development.



Substrate Contracts UI

Substrate Contracts UI is a key developer tool maintained by Parity Technologies (founded by Ethereum co-founder Dr. Gavin Wood) for the Polkadot ecosystem, which has a market cap exceeding $7B. The UI simplifies WASM smart contract deployment and interaction on Substrate-based blockchains used by dozens of major projects. I contributed to the project by enhancing code quality through multiple open-source contributions and gained experience in building dApps with Substrate.



Wizard World

Wizart.world is a groundbreaking platform at the intersection of AI and blockchain that connects to OpenAI's DALL-E models to generate AI images and mint them as NFTs on the Flow blockchain. Developed during the Flow Hackathon 2022, the project was among the first to combine generative AI with blockchain-based ownership rights for digital art. My role involved the app's development, focusing on integrating OpenAI's models for image generation and ensuring smooth functionality with the Flow blockchain through Niftory's NFT infrastructure.



dBoard

dBoard is a DAO decision-making and community management tool. It allows stakeholders to strategize, debate, and vote on actions for organizational efficiency. In this project, my contributions included overseeing the technical architecture and the smart contract development and integration on the webapp.



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.



American Express

American Express, a Fortune 100 company with over 100M cardmembers globally and $180B+ in annual revenue, operates one of the world's largest payment networks. Their website serves millions of users daily for account management and financial services. 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.



AMEX Money Talk

The National Money Night Talk by American Express aimed to promote financial communication between parents and teenagers. As a Frontend Engineer, I developed the campaign's landing page, focusing on user engagement and information delivery.



Elder Scrolls Online

Elder Scrolls Online, developed by ZeniMax Online Studios and published by Bethesda Softworks, is a massively multiplayer online game with over 20 million players. The official website serves as a central hub for this large gaming community, offering news, game guides, and forums. My role was to ensure a user-centric design for the website, facilitating easy navigation and engagement with the content for millions of monthly visitors.



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.



Tikr

Tikr is an online store with dynamic, real-time fluctuating prices, offering a unique shopping experience. It operates on the Ruby on Rails-based Spree backend framework. My role at Tikr encompassed full-stack development with a focus on frontend development and customization of the Spree backend framework.



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.



Bureau of Trade (Beta)

Bureau of Trade (Beta) is an online store offering a range of products, with a frontend integrated with eBay's API for diverse shopping experiences. As the sole Fullstack developer, my focus was on frontend development, responsive design, and animations, along with eBay API integration.



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.



SunTrust

SunTrust (now Truist after merging with BB&T), was a major financial institution with over $220B in assets serving 4.5M+ households. Their Solid Salutes campaign was a key digital initiative to strengthen community engagement and brand loyalty. I developed the entire campaign website, focusing on design and user interaction. My role included overseeing the website's development from concept to implementation, emphasizing user engagement and visual appeal.



ScotiaTico

Scotiabank, a top 5 Canadian bank with over $1T in assets and operations in 50+ countries, maintains a significant presence in Costa Rica through its ScotiaBank Costa Rica division. Their customer communication initiatives are critical to maintaining their 25M+ global customer relationships. I developed the ScotiaTico newsletter, a key communication tool for bank updates and information. My responsibility was crafting an engaging and informative newsletter layout, enhancing communication between the bank and its customers.



Staples

Staples, a Fortune 500 company with over $20B in annual revenue, is one of the world's largest office supply retailers with 1000+ stores and a major e-commerce presence serving millions of customers. Their website processes billions in online sales annually. My role as a frontend developer involved creating user-friendly and efficient navigation elements, contributing to the overall user experience on their e-commerce platform.



Gridium

Gridium is a recognized provider of energy analytics software for commercial buildings, helping facility managers optimize energy usage and reduce costs through data-driven insights. Their platform processes data from thousands of buildings to identify savings opportunities. I built the first version of the application, focusing on displaying data collected from various buildings.



ARINC Microfids

ARINC, now part of Collins Aerospace (a Raytheon Technologies subsidiary), is an industry leader in aviation communications and information technology serving 80% of the world's airports. Their Microfids system provides real-time flight information displays for hotels and airport businesses globally. My responsibilities included frontend development and system integration, ensuring a seamless display of flight information through a Ruby on Rails backend.



Capoeira Abolicao

Capoeira Abolição is a Brazilian martial arts group. I volunteered to create their promotional website, showcasing their professors and community. My involvement included website design and development, highlighting the group's activities and global presence.



Panini

Panini, a project I worked on, provided a unique service or product in its field. My role in this project was focused on technical development and implementation.



Earth

EARTH University offers education in agricultural sciences. I was responsible for building their main website, blog, and newsletter. My work involved creating a digital platform for information dissemination and community engagement, focusing on usability and content management.



Proparques

ProParques is a nonprofit for national park sustainability. I developed their responsive landing page and an interactive national park map. My role included web design and development, focusing on user interaction and information accessibility for park exploration.



Fantasy Tennis

FanSlam Fantasy Tennis is a strategic game for ATP, WTA, and Grand Slam tournaments. I designed and built both the frontend and backend. As a fullstack developer, my work encompassed creating an engaging and functional gaming experience, integrating strategy and user interface design.



Mobtion

Mobtion agency specializes in mobile development services. I designed and developed their responsive website and WordPress CMS. My responsibilities included website design, development, and ensuring seamless content management for the agency.



ITS

ITS InfoCom, an IT multinational, focuses on Remote Infrastructure Management. I implemented their primary website, CMS, and CRM integration. My role was to create and integrate digital solutions for the company, focusing on web presence and customer relationship management.



Trivenzor

For Trivenzor, a hypertension medication, I developed a responsive landing page for patient and healthcare provider information. My work involved creating a user-friendly and informative digital platform, emphasizing medical information clarity and accessibility.



Living with Dryness

The Living with Dryness project involved crafting a responsive landing page focused on providing information and resources. As the developer, I ensured a pixel-perfect design and user-friendly navigation, catering to the project's specific audience and needs.



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.



AsoBlockchain

AsoBlockchain, founded in 2017, is Costa Rica's first and leading non-profit blockchain association. The organization has trained over 1000 developers, partnered with major universities like ULACIT and ADEN Business School, and played a key role in shaping national cryptocurrency regulations through collaboration with the Central Bank and other regulatory bodies. Through initiatives like TicoBlockchain conference and CriptoCantina, it has become the primary driver of blockchain adoption in Central America.



CryptoCantinaCR

CryptoCantinaCR, established in September 2018, became Costa Rica's most influential blockchain community with over 500 regular participants and recognition from national media outlets like La Nación and El Financiero. What began as informal Thursday meetups has evolved into a formal educational initiative under CriptoCantina.org, which has trained hundreds of developers and influenced national cryptocurrency policy through engagement with government officials and regulators.