Georges Da Costa developed and delivered the MojitO/S HPC monitoring tool as a new Spack package in the spack/spack-packages repository, focusing on deployment reliability and observability for high-performance computing workloads. He used Python for both development and packaging, ensuring the tool’s Linux build and runtime dependencies were clearly documented and integrated. Georges refined packaging metadata, updated installation instructions, and resolved integration issues to align with Spack’s policies and standards. His work emphasized reproducibility and maintainability, with thorough documentation and code quality checks. Collaborative, multi-author commits demonstrated his ability to work within established workflows and contribute to robust system monitoring solutions.