Leonardo H.
Full-stack Product Engineer

Skills

Node.js

Next.js

Typescript

Github

Javascript

Postgresql

Mysql

React

Leonardo is available for hire

Meet Leonardo H.

All Howdy Candidates are vetted for skills and english proficiency.

Bio

Senior Full Stack Blockchain Developer with expertise in technology, focusing on the development sector. Proficient in the JavaScript stack, including React and Node.js, and skilled in TypeScript. Contributed to significant Web3 projects, including the development of a decentralized exchange and a digital crypto wallet supporting both Syscoin and Ethereum networks. Additionally, possesses extensive experience in various Web2 projects for prominent national firms. Dedicated to continual learning in the blockchain environment, leveraging Web3.js and ethers.js to develop applications predominantly on Syscoin, Ethereum, and Polygon networks. Actively seeking new opportunities in both Web2 and Web3 projects as a Full Stack Developer.

Blockchain Full Stack Developer
6/1/2021 - 1/1/2024

Built web applications focused on Blockchain using React and Node with TypeScript, integrating Smart Contracts and libraries such as Web3.js and ethers for data manipulation and network communication with Ethereum and Syscoin. Acquired proficiency in RPC methods using providers like MetaMask and custom-built providers for specific applications. Contributed to several international projects, including the launch of Pali Wallet V2 and Pegasys V2, in collaboration with Syscoin.
Full Stack Web Developer
2/2/2021 - 6/1/2021

Responsible for the maintenance and development of web and mobile applications using the complete JavaScript stack, including Node.js, React, and React Native. Developed proficiency in working with databases such as PostgreSQL and MySQL, ensuring robust and scalable backend support.
Devops
5/2/2018 - 1/2/2021

Served in a dual role encompassing Support and DevOps responsibilities, ensuring seamless operation and optimization of internal applications sourced from third parties. Maintained and administered servers, networks, and other critical infrastructure components. Contributed to the development of internal applications as a Full Stack Developer, initially employing PHP and later transitioning to modern technologies such as React and Node.js for enhanced performance and user experience.