Attie Grande contributed to the nrfconnect/sdk-zephyr repository by addressing low-level system reliability and project governance. In December 2025, Attie enhanced the STM32 SDMMC driver by implementing cache flush and invalidation routines for DMA-based SD/eMMC storage access, using C and leveraging expertise in DMA management and embedded systems. This work improved cache coherence and reduced data corruption risks in storage operations. Earlier, in July 2025, Attie maintained repository hygiene by updating maintainer metadata, ensuring accurate contributor records and clearer project ownership. The contributions demonstrated careful attention to both technical correctness and collaborative project maintenance, reflecting depth in embedded software engineering.