Ana Pantilie focused on maintenance-driven engineering across the Tweag/cardano-ledger and IntersectMBO/cardano-base repositories, emphasizing release management and dependency hygiene. She updated the release packaging configuration in cardano-ledger, refining the manifest to better align with current development needs by removing outdated test suites and adding new components. In cardano-base, Ana upgraded the contra-tracer dependency to ensure compatibility with existing tooling, maintaining stability without introducing functional changes. Working primarily with Haskell and Markdown, she coordinated cross-repository changes to reduce release risks and streamline future cycles. Her work demonstrated careful attention to software hygiene and effective dependency management within the Cardano ecosystem.