IT for web and mobile app and Blockchain Consultant & Entrepreneur - Bitcoin, Ethereum and Smart Contracts. Web and App developer. - PHP - Node.js - Javascript - Typescript - Webpack - Phyton - Heroku - MongoDb - MySql & MariaDB - postgresql - React.js & Angular.js - Blockchain - Bitcoin - Ethereum - Hyperledger - Corda - Wordpress - E-commerce - HTML & CSS