During March 2025, Nrr focused on backend development for the facebook/fbthrift repository, addressing a nuanced reliability issue in Thrift-Python client templates. By updating the import logic to include mutable clients alongside immutable ones, Nrr resolved an edge-case that previously led to client-mixing and runtime errors in dependent services. The solution, implemented in Python and leveraging Thrift, improved service stability by ensuring correct client imports in templated code. This work demonstrated careful attention to edge-case handling and a deep understanding of Python templating within distributed systems, resulting in more robust and maintainable backend infrastructure for services relying on fbthrift.