Backend Developer Middle/Senior Remote

#вакансия #backend #fullstack #crypto #web3jobs #remote #backenddeveloper #fullstackdeveloper #typescript #nodejs #blockchain #defi #frontend #middle #senior ●We are looking for a Backend / Fullstack Engineer to work on Web3 and fintech-related products. ●Company: cropr.finance ●Format: Remote ●Engagement: Full-time / Project-based ●Payment: depends on your involvement and working period. Senior engineer - 6500-10000$, middle - 4000-6000$ ●Main responsibilities: Develop backend services and business logic Design APIs, databases, and system architecture Integrate wallets, blockchain networks, and external APIs Work with transactions, smart contract calls, and on-chain data Support deployment, monitoring, and production stability ●Required skills: Node.js, TypeScript NestJS, Python, Express, or Fastify PostgreSQL, MongoDB, Redis REST, GraphQL, WebSocket Docker, Linux, Git, CI/CD Backend architecture and scalable systems Experience with production applications ●Web3 experience: EVM networks and blockchain transaction flows Smart contract interaction ethers.js, viem, or web3.js RPC providers, events, wallets Basic DeFi understanding: swaps, staking, liquidity, bridges, tokens ●Would be a bonus: Master's /PhD in CS. Solidity, Hardhat, Foundry, OpenZeppelin React / Next.js Cloud infrastructure experience, UI designing skills, On-chain data indexing Fintech, SaaS, or crypto product experience ●Project description: We are building a Web3 analytics and portfolio management platform that helps users track assets, transactions, and DeFi positions across multiple blockchain networks.The platform aggregates blockchain data into a single dashboard, providing portfolio insights, transaction history, real-time alerts, and automation tools. Our goal is to simplify portfolio management and make blockchain data more accessible for both individual users and crypto teams. Further information about the project is discussed personally. ●Applying: Send a short intro, CV or LinkedIn, GitHub, and relevant project examples if possible. ●Contact: @Gram_Thomas