Worked on enhancing reliability and concurrency safety in legacy transaction pool management for the okx/op-geth and bnb-chain/bsc repositories. Focused on diagnosing and resolving a data race within the Legacypool’s checkDelegationLimit function, introducing a dedicated delegationTxsCount helper to ensure safe access to pending authorizations. This approach reduced the risk of race-induced transaction failures and improved throughput for pending transactions in production environments. Leveraged Go for backend development, applying concurrency patterns and robust error handling to address performance-critical reliability goals. The work demonstrated depth in cross-repo collaboration and contributed to more stable transaction pool operations across both codebases.