John Ruff

· Built Polygen NFT raffle site from scratch with solidity, hardhat, Vue.js, Node.js and MongoDB. · Several types of Trading bot development like pump-fun-sniper bot, bundle bot, token buy/sell bot, wallet tracking bot, crypto trading bot in polymarket. · Created launchpad site for a new SUI token with Next.js, Move for Smart Contract, Suikit for integration with Frontend. · Collaborated with front-end developers to integrate blockchain functionalities into web applications using React and Web3.js.

-Led the design and implementation of a multi-chain DeFi platform that increased transaction throughput by 50%. -Developed smart contracts for various DeFi applications, managing over $200M in total value locked. -Collaborated with cross-functional teams to integrate blockchain solutions into existing systems. -Mentored junior developers on blockchain best practices and smart contract development.

-Designed and implemented decentralized applications (dApps) for marketplace functionalities using Ethereum. -Utilized Solidity to develop and deploy smart contracts ensuring security and efficiency. -Conducted code reviews and security audits to enhance the reliability of blockchain applications.

-Developed and optimized smart contracts for various tokenization projects on Ethereum. -Implemented automated testing frameworks to ensure the integrity of smart contracts. -Collaborated with front-end developers to create a seamless user interface using React.js and Web3.js. -Developed smart contracts for minting and trading NFTs compliant with ERC721 and ERC1155 standards. -Collaborated with product managers to define requirements and deliver innovative blockchain solutions.

-Built responsive web applications using JavaScript frameworks integrated with blockchain backends. -Developed RESTful APIs to connect frontend applications with blockchain data. -Participated in Agile development processes to deliver features iteratively. -Developed server-side logic using Node.js and Express to support web applications. -Managed database interactions with MongoDB to ensure efficient data storage and retrieval. -Implemented security protocols to protect sensitive user data.