Worked on package management for Nix-based repositories, focusing on security and reliability improvements. In srid/nixpkgs, delivered a dependency upgrade by updating the Mealie package to version 2.2.0, introducing the itsdangerous library to enhance security and compatibility for downstream users. Ensured a reproducible upgrade path with clear version control. Later, in Saghen/nixpkgs, addressed a critical build issue by adding util-linux to the debootstrap build dependencies, resolving missing utility errors and improving workflow stability. Demonstrated proficiency in Nix, dependency management, and secure release practices, with work characterized by targeted, high-impact changes that improved package maintainability and build reliability.