Solidity - Foundry - Security ResearcherOpenzeppelin Defender V2.0The Graph indexer node execution client GETH & Rust ETH on L2

Solidity - Foundry - SlitherNestJs - PostgreSQL

• Developed a blockchain-based application using Ethereum, React, AWS, Solidity, and Hardhat. Created smart contracts to tokenized assets and created a payment gateway for seamless transactions. • Designed a system for staking contracts based on the Synthetix protocol, enabling users to stake their money in Uniswap or Aave protocols.• Established a REST API using NestJs for interactions with an SQL database. Integrated the system with a self-custodial wallet, improving security for user transactions.

• I developed a REST API to tokenize subscriptions using Non-Fungible Tokens (NFTs) and implemented a robust system to ensure the creation of verifiable, tamper-proof records. To further streamline the process, I automated a system that converts PDF files into JPG images to mint NFTs of student diplomas, using advanced queue systems and Redis tools. • Integrated blockchain functionalities with legacy PHP systems, leveraging elliptic curve cryptography for secure logging.• I engineered a system capable of generating dynamic image hashes for Non-Fungible Tokens (NFTs), using a custom logic and the Base64 library within Solidity. This innovative solution allows for the creation of unique, identifiable tokens, further expanding the utility and potential of NFT technology in various applications.• Development of specific features related to NFTs, such as crafting a unique logic around NFT allowances. This innovation enhanced user security, especially in preventing potential wallet losses. •Account Abstraction, system of voting with Self RecoveryTech stack:Node 18.16Nest 9.0.0Solidity 0.8.10 - 0.8.18EthersJs 6.4Typescript 4.7.4RedisAWSTools:Hardhat 3.0.0Tenderly

Tech stack:Node 16.16.0 - 18.17.0Nest 8.5.5 - 10.0.4Solidity 0.8.10 - 0.8.18EthersJs 5.2 - 6.4React 17.0.2 - 18.1.0Typescript ^4.0.0SQLTools:Hardhat 2.10.1 - 3.0.1Tenderly

• Developed a sophisticated trading bot leveraging technologies such as JS, Node, Ethers.js, Solidity, and Hardhat. The bot was designed to interact with various DeFi platforms including Uniswap V2-V3, Aave V2, and 1inch.• Created a mechanism for the bot to monitor liquidity pool prices, focusing primarily on the ETH and USDC pair. The bot uses a strategic curve-based pricing model to decide when to open positions on the ETH/USDC market on Uniswap.• Incorporated lending and borrowing features into the bot based on profitability, and optimized token swaps using 1inch due to itsefficiency in routing trades on the Polygon network.• Automated position closure in the trading bot using node-cron to ensure optimal trading decisions, contributing to more efficient and profitable operations.Tech stack:Node 16.16.0Solidity 0.8.10EthersJs 5.2Tools:Hardhat 2.10.1Tenderly