In May 2025, Alex Bandy enhanced the mathworks/arrow repository by implementing support for nested StructArray data in Swift, enabling robust reading and writing of complex struct data with comprehensive unit tests to ensure correctness. Alex addressed challenges in data serialization and IPC by refactoring the Arrow IPC stream handling API, clarifying distinctions between file and stream semantics to improve reliability in data interchange. Working primarily in Swift and Go, Alex applied expertise in API design, data structures, and low-level programming to deliver deeper test coverage and clearer APIs, resulting in safer, more maintainable workflows for cross-language data processing in Arrow.