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 She updated the release packaging configuration in cardano-ledger, refining the manifest by removing outdated test suites and adding new components to streamline future releases. In cardano-base, Ana upgraded the contra-tracer dependency in the Haskell cabal file, ensuring compatibility with existing tooling without introducing functional changes. Her work, primarily in Haskell and Markdown, targeted risk reduction and smoother release cycles by coordinating cross-repository changes. The depth of her contributions reflects a methodical approach to software hygiene and release engineering best practices.