Marco Migliorini

Part-time role overseeing blockchain/web3 backend infrastructure and token ecosystem. Responsibilities include planning and hands-on development of smart contracts (ERC-20 upgradeable via OpenZeppelin proxy), two additional upgradeable contracts for Uniswap liquidity pool interaction via Universal Router v4, and buy/sell swaps against USDT. Backend architecture includes a Node.js microservices stack with BullMQ, Docker, and GitHub Actions. Key components: API gateway with authentication and input validation, a gasless relayer (ERC-2771), and an event listener for blockchain events. Data persisted in PostgreSQL with monitoring and scale considerations.

Provide end-to-end dApp development on EVM-compatible blockchains, smart contract design and security reviews, and blockchain training. Work across MERN/PERN web apps, microservices with BullMQ and Docker, and deliver guidance on Chainlink Automation/Data Feeds/VRF and Uniswap liquidity/swaps. Also conduct Bitcoin and Lightning Network training, plus Solidity development, testing, deployment, and deployment best practices.

Collaborated across backend lifecycle, developing core microservices in Java (OSGi) and vertical monoliths (J2EE) with ERP/CRM integrations. Exposed RESTful APIs with a focus on decoupling and scalability, and implemented data consistency via distributed transaction patterns (SAGA). Practiced TDD/JUnit with CI/CD pipelines and Docker-based deployments.