Job Responsibilities

1. Web3 Mobile Application Development

• Responsible for developing mobile applications that support blockchain interactions (such as wallets, DApp browsers, NFT marketplaces, DeFi applications, etc.).
• Implement interactions with blockchain nodes and smart contracts (via Web3.js, ethers.js, or native SDKs).
• Handle security-sensitive logic related to cryptocurrency transactions, signatures, and key management.

2. Wallet and Security Architecture

• Develop or integrate cryptocurrency wallet features (such as mnemonic generation, private key storage, HD wallet derivation).
• Design secure local data storage solutions (Keychain/Secure Enclave/Android Keystore).
• Prevent common attacks (such as MITM, phishing, reverse engineering) and ensure code obfuscation and hardening.

3. Implementation of Web3 Technology Stack

• Connect with mainstream blockchain protocols (Ethereum, Solana, Cosmos, etc.) and standards (ERC-20/721/1155).
• Integrate decentralized storage (IPFS, Arweave) or authentication (DID, OAuth).
• Optimize communication efficiency between mobile devices and blockchain nodes (such as light node mode, Infura/Alchemy API calls).

4. User Experience and Performance Optimization

• Address unique performance issues in Web3 scenarios (such as real-time transaction status updates, gas fee estimation).
• Design user-friendly on-chain operation processes (such as transaction confirmation, authorization signature guidance).

5. Cross-Team Collaboration

• Collaborate with smart contract development and backend (node service) teams to define interaction protocols.
• Participate in product design, proposing Web3 technology feasibility and mobile adaptation solutions.

1. Essential Skills and Experience

• Web3 Experience:
• Over 2 years of mobile development experience in Web3, familiar with wallet, DApp, or related project development processes.
• Understanding of basic blockchain concepts (transactions, Gas, smart contracts, wallet address systems).
• Mobile Technology:
• iOS: Proficient in Swift, familiar with CryptoKit and Security frameworks;
• Android: Proficient in Kotlin, familiar with Jetpack Security and TEE environments;
• Familiar with cross-platform frameworks (e.g., integration of React Native + Web3.js).
• Security Skills:
• Mastery of encryption algorithms (AES, RSA, ECC) and signature mechanisms (ECDSA).
• Familiar with mobile security practices (anti-debugging, certificate pinning, sensitive information protection).

2. Preferred Qualifications

• Experience contributing to open-source Web3 projects or independent DApp development.
• Familiar with multi-chain compatibility solutions (e.g., WalletConnect, EIP-6963).
• Understanding of zero-knowledge proofs (ZKP) or MPC wallet technology.
• Experience using Web3 development tools (Hardhat, Truffle, MetaMask SDK).

3. Soft Skills

• Passionate about the Web3 industry and able to quickly learn emerging protocols and standards.
• Adaptable to the collaboration model of decentralized teams (e.g., asynchronous communication, use of DAO tools).