Blockchain Developer

Hiring Senior Blockchain Developer (Web3 Experience Required)
We are building a secure USDT-based investment and referral mobile platform with custodial wallet infrastructure, internal ledger management, and ERC20 token integration. The system includes crypto deposits/withdrawals (TRC20/ERC20), automated investment lifecycle logic, and secure backend transaction handling.
We are looking for a highly skilled Blockchain Developer to lead backend and wallet infrastructure development.
Responsibilities
• Design and develop secure REST APIs using
• Implement custodial wallet infrastructure (backend-controlled private keys)
• Integrate blockchain networks (TRC20, ERC20, BEP20)
• Handle crypto transaction signing & broadcasting (TronWeb / )
• Develop internal off-chain ledger system
• Build automated cron jobs for investment lifecycle & profit distribution
• Implement secure referral & commission logic (atomic transactions)
• Ensure backend security (JWT auth...