Worked on the prestodb/presto repository to address concurrency issues in containerized environments by implementing a container-aware threading fix. The solution involved replacing std::thread::hardware_concurrency with folly::hardware_concurrency, ensuring that thread pools accurately reflect CPU limits imposed by Linux cgroups. This adjustment prevented over-provisioning and reduced CPU contention, leading to improved resource utilization and system stability. The work demonstrated a strong command of C++ and system programming, with a focus on Linux container management and concurrent programming. By aligning thread pool sizing with container restrictions, the changes enhanced the reliability and performance of Presto under constrained computing resources.