Brandon Amarillo developed foundational server architecture improvements for the so1unp/2025-lab-05 repository, focusing on scalable management of 'catacumbas'. He modularized the server logic into a dedicated server.c file, organizing core operations into distinct functions to enhance maintainability and extensibility. Leveraging C and system programming skills, Brandon introduced a message queue-based communication layer, enabling robust inter-process communication for listing, adding, searching, and deleting catacumbas. This centralized approach established a reliable CRUD-like interface for client requests, aligning with business goals of scalability and testability. The work demonstrated depth in system-level design and effective use of IPC and message queues.