Gleb Arkhipov focused on enhancing the resilience and performance of streaming decompression workflows in the ktorio/ktor repository. He addressed a critical bug in the ZstdEncoder decoding process, ensuring correct handling of source data split across multiple frames and introducing robust error handling for incomplete frames. Using Kotlin and leveraging backend development skills with coroutines and unit testing, Gleb implemented targeted tests to validate split-frame decoding and optimized the decode path for reduced latency and improved throughput. His work improved reliability in production streaming scenarios, increased test coverage, and ensured clear traceability between code changes, issues, and documentation.