Job Description: Responsibilities: 1. Responsible for backend development of core modules for on-chain transactions on the platform, including the development and iteration of trading flows for Meme coins, multi-chain tokens, contracts, and prediction markets. Interface with DEXs and on-chain RPCs to implement functionalities such as on-chain signing, order placement, transaction submission, and transaction receipt parsing. 2. Build systems for collecting, cleaning, aggregating, storing, and distributing on-chain market data and Meme ecosystem data.