In February 2025, Nesa delivered multi-network market access and sub-account features for the DeFi Saver SDKs, focusing on expanding contract interaction across Arbitrum and Base. Working primarily in TypeScript, Nesa updated address mappings and introduced new constants in the defisaver-positions-sdk and defisaver-sdk repositories, enabling seamless trading and sub-account creation on additional networks. This work enhanced developer onboarding and broadened the SDK’s market coverage, supporting scalable cross-network DeFi strategies. The technical approach emphasized precise address management and smart contract interaction, reflecting a focused, incremental expansion of functionality without introducing bugs, and demonstrating depth in DeFi and smart contract integration.