Daniel Johnson contributed to both the NVIDIA/doca-sosreport and geerlingguy/linux repositories, focusing on device driver and kernel development using C and Python. He enhanced DOCA data collection in sosreport by integrating new scripting workflows, improving the reliability and completeness of diagnostic reports for DOCA deployments. In geerlingguy/linux, Daniel implemented interface control header changes for mlx5 devices, enabling accurate monitoring of host PF disable states and correcting devlink port attribute offsets to improve virtualization management. His work demonstrated careful attention to data structure alignment, log analysis, and system administration, resulting in more robust observability and reduced configuration errors in production environments.