I am looking for a highly skilled blockchain/trading platform developer to urgently diagnose and fix issues in my existing trading platform. The platform was working correctly before, but recently ETH and Dogecoin trading features stopped functioning properly. I strongly suspect the problem is related to API integration or RPC endpoints (rate limits, deprecated endpoints, network configuration, or response handling). This is not a new build. The system already exists and needs targeted debugging and fast resolution. Scope of Work Investigate ETH and Dogecoin API/RPC connectivity issues Identify broken or outdated endpoints Fix balance fetching, price updates, or transaction-related failures Ensure stable and accurate data flow for both networks Perform quick testing to confirm everything works correctly Requirements Strong experience with crypto trading platforms Hands-on knowledge of Ethereum & Dogecoin APIs / RPC nodes Experience with exchanges, blockchain nodes, or Web3 integrations Ability to debug live systems efficiently Fast communicator and problem-solver Timeline: 2–3 hours maximum Immediate start preferred