Radu Chis contributed to the multiversx/mx-chain-go repository by delivering targeted backend and configuration management improvements over two months. He enhanced chain parameter reliability by refining how Round Duration and Hysteresis values are applied during configuration updates, using Go and shell scripting to ensure robust parameter management. Radu also addressed an edge-case bug in header epoch propagation, improving the accuracy of header processing logic. Additionally, he doubled antiflood throughput by tuning PeerMaxInput and PeerMaxOutput, enabling higher peer communication capacity without increasing hardware requirements. His work demonstrated careful change isolation, clear commit traceability, and a strong focus on blockchain system stability.