In February 2025, Saad Islam refactored the firedancer-io/firedancer repository by relocating the pack module from ballet to disco, clarifying module boundaries without altering existing behavior. He updated all relevant import paths and references across both C and Python files, ensuring the build system and runtime remained stable throughout the transition. This reorganization improved code organization and reduced coupling, laying a foundation for easier future enhancements and ongoing maintenance. Saad’s work demonstrated a thoughtful approach to refactoring, with careful attention to traceability and auditability, and leveraged his skills in build systems, code organization, and cross-language development in C and Python.