NexVault

NexVault is a yield aggregation protocol on Arbitrum that automatically routes user funds across Aave, Compound, and GMX to maximize APY. The client came with a whitepaper and a 14-week deadline ahead of a token launch. We designed the full protocol architecture, wrote and tested all contracts, built the frontend dashboard, and deployed to mainnet.

Challenge

The core engineering challenge was building a rebalancing engine that could execute across multiple protocols atomically, without exposing users to sandwich attacks or excessive gas costs during rebalancing events. We solved this with a keeper-based off-chain trigger + on-chain validation pattern, with a 5% APY variance threshold before rebalancing fires.