William

Hanai

- Took part in the development of an AI-driven social marketing planning platform with MERN stack. - Joined several startups, businesses, and development teams and contributed to their products in React.js, Vue.js, Node.js, and PHP. - Migrated a bunch of legacy applications to modern interactive applications using React.js, Redux, React Hooks, and Vue.js. - Worked in agile/scrum and remote environments following DRY principles. - Developed a few mobile applications with hybrid frameworks like React Native and Ionic.

- Worked on building out the MVP version of the platform including the UI using React.js, TypeScript, React Hooks, and a couple of Node.js services. - Integrated REST APIs on the frontend using Axios. - Built a gift card marketplace so users can purchase gift cards with their earnings on the platform. - Built the global state machine using Redux toolkit. - Owned the feature development of Marketplace and Challenges

- Designed and developed a proof-of-concept platform for a new decentralized energy trading system, leveraging Ethereum smart contracts and tokenization to enable secure peer-to-peer transactions between consumers and producers - Optimized the code of smart contracts and increased the efficiency by 15%, using the Library functionalities - Provided mentorship to junior developers, emphasizing best practices in software development, code review, and testing

- Wrote smart contracts that aims to simplify DeFi, maintain security of user funds and aggregate other contracts functionality - Cleaned-up contracts with gas optimizations and wrote deployment and test scripts using Hardhat to make sure it works on test networks such as Rinkeby or Kovan - Enabled users to have a programmatic approach to managing their assets - Implemented MEV protection and ERC20 signature permit considering risen of MEV bots