# Web3 Full Stack Developer - Company: [Hyphenconnect]() - Location: Singapore - Team: Engineering - Posted: July 15, 2025 ## Job description We are hiring for one of our ecosystem projects in Web3. As a Web3 Full Stack Developer, you will design, develop, and maintain decentralized applications (dApps) and blockchain-based systems. You will work across the full stack, from smart contract development to front-end interfaces, collaborating with cross-functional teams to deliver secure, scalable, and user-friendly Web3 solutions. Your expertise in Web3 protocols and modern tech stacks will be critical to building robust applications for the decentralized web. **Key Responsibilities** * **Smart Contract Development:** Design, develop, test, and deploy secure smart contracts on various blockchain platforms (e.g., Ethereum, Solana, Polkadot, Cosmos). * **Backend Development:** Build and maintain backend infrastructure for dApps using languages like Golang, Java, Node.js, or Rust, ensuring scalability and performance. * **Frontend Development:** Create responsive, user-friendly front-end interfaces for dApps using modern frameworks (e.g., React, Vue.js, Next.js) integrated with Web3 libraries (e.g., ethers.js, web3.js). * **Blockchain Integration:** Integrate dApps with blockchain networks, wallets (e.g., MetaMask, WalletConnect), and decentralized protocols (e.g., IPFS, The Graph). * **Protocol Development:** Contribute to the design and implementation of Web3 protocols, including consensus mechanisms, cross-chain bridges, or DeFi primitives. * **Security & Testing:** Implement secure coding practices, conduct audits, and develop testing frameworks to ensure the reliability and security of smart contracts and dApps. * **Optimization:** Optimize performance of blockchain interactions, gas efficiency, and backend systems to enhance user experience and reduce costs. * **Collaboration:** Work with product managers, blockchain engineers, and designers to deliver end-to-end Web3 solutions aligned with project goals. * **Research & Innovation:** Stay updated on Web3 trends, emerging protocols, and new blockchain technologies to propose innovative solutions. **Qualifications** * **Education:** Bachelor’s or Master’s degree in Computer Science, Engineering, or a related technical field, or equivalent experience. * **Experience:** + 3+ years of full stack development experience, with at least 1+ years in Web3 or blockchain development. + Proven experience building dApps or working on Web3 protocols (e.g., DeFi, NFTs, DAOs, or layer-2 solutions). * **Technical Skills:** + Proficiency in **Golang**, **Java**, **Node.js**, or **Rust** for backend development. + Experience with smart contract languages like **Solidity**, **Vyper**, or **Rust (for Solana/Polkadot)**. + Strong knowledge of front-end technologies (e.g., **React**, **Vue.js**, **TypeScript**, **Next.js**) and Web3 libraries (e.g., **ethers.js**, **web3.js**). + Familiarity with blockchain protocols (e.g., Ethereum, Solana, Cosmos, Polkadot) and tools (e.g., Truffle, Hardhat, Foundry). + Experience with decentralized storage (e.g., IPFS, Filecoin) and indexing solutions (e.g., The Graph). + Understanding of RESTful APIs, GraphQL, and microservices architecture. * **Web3 Knowledge:** Deep understanding of blockchain concepts (e.g., consensus mechanisms, gas fees, EVM, cross-chain interoperability) and Web3 ecosystems (e.g., DeFi, NFTs, DAOs). * **Security Skills:** Knowledge of smart contract security best practices, common vulnerabilities (e.g., reentrancy, front-running), and auditing tool .**Bonus Skills:** * Experience with layer-2 solutions (e.g., Arbitrum, Optimism) or cross-chain bridges. * Familiarity with DevOps tools (e.g., Docker, Kubernetes) and cloud platforms (e.g., AWS, GCP). * Contributions to open-source Web3 projects or blockchain protocols. * Knowledge of cryptographic principles (e.g., zero-knowledge proofs, MPC). ## Apply [Apply on Hyphenconnect]() Canonical job page: