In January 2026, Andreas Gehrke focused on backend development for the Azure/azure-sdk-for-net repository, delivering a targeted performance optimization for the NDJsonWriter component. He improved serialization throughput and reduced memory footprint by eliminating unnecessary memory copies and resizing operations within the data pipeline. Using C# and applying advanced memory management techniques, Andreas refactored the code to lower allocations and enhance scalability for NDJSON streaming scenarios. This work addressed resource efficiency and throughput bottlenecks, resulting in faster, more scalable data processing for clients and services. The depth of the optimization demonstrated strong skills in C# programming, performance tuning, and disciplined testing.