Middle/Senior Web3 Backend/Fullstack Engineer

Responsibilities:
• Develop backend services for Web3 and cryptocurrency applications;
• Design APIs, databases, and system architecture;
• Integrate wallets and networks;
• Manage transactions and on-chain data;
• Develop dashboards and internal tools;
• Create automation, bots, and API integrations;

Requirements:
• Backend architecture expertise;
• Web3 and blockchain integration capabilities;
• Smart contract interaction proficiency;
• Experience with DeFi, NFT, and crypto products;
• Development of production systems;

Required Skills:
• Backend: Node.js/TypeScript, NestJS/Express/Fastify, PostgreSQL/MongoDB/Redis, REST/GraphQL/WebSocket, Docker/Linux/Git/CI/CD, and scalable systems;
• Web3: Blockchain transaction flows, EVM networks, smart contract interaction, ethers.js/web3.js, RPC providers, events, and DeFi mechanics;

Preferred Qualifications:
• Solidity, Hardhat, Foundry, OpenZeppelin;
• DeFi: Swaps, staking, liquidity, bridges, and DEXs;
• Frontend: React/Next.js for dashboards and UI;