Full Stack Engineer (React, NestJS, Web3)

About EcoWheel EcoWheel is a E-bike/car platform building the future of sustainable mobility. We help reduce carbon emissions through an e-bike rental platform powered by blockchain and AI. Our platform includes: -E-bike rental marketplace -Fleet management -Real-time e-bike tracking -CO₂ Token Layer -Carbon marketplace -AI-powered features About the Role We are looking for a Senior Full Stack Engineer with experience in React, NestJS, and Solidity to help build and improve the EcoWheel platform. You will work on the frontend or backend, develop smart contracts, and build scalable features for our climate-tech platform. In the initial scope, you will be focused with upgrade and complete to the main rental system with existing project(skeleton project) Responsibilities -Develop web applications using React and TypeScript. -Build REST APIs with NestJS. -Design and maintain PostgreSQL databases. -Develop Solidity smart contracts(in the future or will be hired new smart contract dev). -Integrate blockchain features and wallet authentication(in the future). -Build real-time e-bike tracking. -Build the CO₂ Token Layer. -Write clean, maintainable, and well-tested code. -Collaborate with designers and other engineers. Requirements -3+ years of software development experience. -Strong React and TypeScript skills. -Strong NestJS and Node.js experience. -Experience with PostgreSQL. -Experience developing Solidity smart contracts.(for smart contract dev) -Knowledge of Ethereum or Arbitrum(for smart contract dev). Nice to Have -Google Maps API -CI/CD -MetaMask or WalletConnect -Ethers.js or Viem -OpenZeppelin -Hardhat or Foundry -AI integrations Technology Stack -React -TypeScript -NestJS -Node.js -PostgreSQL -Solidity(for only smart contract dev) -Ethereum(for only smart contract dev) -Arbitrum(for only smart contract dev) -ERC-20 / ERC-721 / ERC-1155(for only smart contract dev) -Ethers.js or Viem(for only smart contract dev) What We Offer -Fully remote -Flexible working hours -20–30 hours per week -Long-term collaboration -Competitive hourly rate based on experience If you are read all these, please apply with :)