I design and build secure Web3 infrastructure for FinTech, blockchain and digital asset products.

This service can include Solidity/EVM smart contracts, settlement and escrow logic, wallet integrations, blockchain APIs, Ethereum RPC connectivity, TypeScript/Node.js backend services and on-chain/off-chain workflows.

Typical deliverables may include: • Solidity smart-contract development • Contract architecture and security review • Ethereum/EVM integration • Wallet and transaction flows • TypeScript/Node.js Web3 APIs • RPC and blockchain service integration • Smart-contract testing and deployment preparation • Technical documentation and production-readiness recommendations

Scope and final delivery are adapted to the complexity of your product.