Matteo De Palo contributed to the Shopify/cli and Shopify/shopify_app repositories, focusing on release management and developer tooling over a two-month period. He prepared the Shopify App for version 22.5.0 by aligning dependencies, updating changelogs, and ensuring version consistency to reduce deployment risk. On the CLI, Matteo upgraded core dependencies such as Ink and React, refactored code for TypeScript compatibility, and improved error handling across asynchronous workflows. His work included enhancing progress bar rendering and updating documentation, resulting in a more stable and maintainable codebase. Matteo primarily worked with TypeScript, JavaScript, and Ruby, demonstrating depth in full stack development.