During September 2025, Alex Shackleton enhanced the slac-lcls/lcls2 repository by implementing Single Writer Multiple Reader (SWMR) mode support in the smalldata module. This work involved updating both the Server and SmallData components to accept and propagate a swmr_mode flag, enabling safe, concurrent read access to HDF5 files while data is being written. By leveraging Python and applying expertise in concurrency and data handling, Alex established a foundation for multi-reader workflows that reduces read contention and improves data accessibility. The targeted, well-scoped change strengthened collaborative data access for multi-user environments, demonstrating a thoughtful approach to scalable data infrastructure.