Web3 Full Stack Developer

Hyphen Connect; Singapore; On-site; SGD 75,000 - 120,000; Full time

Job summary

Hyphen Connect is seeking a Web3 Full Stack Developer to lead the design and development of decentralized applications and blockchain solutions. This role demands a robust understanding of full stack development, strong backend and frontend skills, and a commitment to security and innovation in the Web3 space. The successful candidate will collaborate with cross-functional teams to deliver user-friendly and scalable applications in a rapidly evolving tech landscape.

Qualifications

• 3+ years of full stack development experience, including 1+ years in Web3/blockchain.
• Proficiency in backend languages and frameworks.
• Deep understanding of blockchain concepts.

Responsibilities

• Design, develop, test, and deploy secure smart contracts.
• Build backend infrastructure and create responsive front-end interfaces.
• Integrate dApps with blockchain networks and wallets.

Skills

Smart Contract Development

Backend Development

Frontend Development

Blockchain Integration

Security & Testing

Protocol Development

Optimization

Research & Innovation

Education

Bachelor’s or Master’s degree in Computer Science, Engineering, or related field

Tools

Solidity

Golang

Java

Node.js

Rust

React

Vue.js

Next.js

ethers.js

web3.js

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).

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