Worked on the multiversx/mx-chain-go repository, focusing on backend development and configuration management to enhance blockchain reliability and throughput. Delivered improvements to chain parameter configuration, ensuring round duration and hysteresis values were correctly applied during updates, which stabilized parameter management for end users. Addressed an edge-case bug in header processing by refining epoch propagation and simplifying header cleanup logic. Increased antiflood throughput by doubling message limits, enabling higher peer communication capacity without additional hardware. Employed Go and shell scripting to implement targeted, traceable changes, demonstrating a methodical approach to codebase maintenance, performance tuning, and risk minimization over a two-month period.