Senior Blockchain Engineer

About the role

This role involves developing and securing blockchain infrastructure systems, including wallet management, chain integration, custody solutions, and asset management across major networks.

Key responsibilities

• Develop and secure Hot/Cold wallet systems, managing the full lifecycle of transactions
• Implement and maintain nodes and indexers for major networks (Bitcoin, EVM, Solana) to monitor on-chain activity
• Architect custody solutions using Multi-Party Computation (MPC) or Multi-Sig frameworks (e.g., Fireblocks, Fordefi)
• Design the "Blockchain Gateway" to automate fund sweeps, handle token standards (ERC-20, SPL)
• Build cryptographic verification tools to provide on-chain proof of exchange balances for transparency and auditing

About you

• Proficiency in Go or Rust; functional knowledge of Solidity for smart contract interaction is a plus
• Extensive experience with RPC nodes, blockchain indexers, and libraries like Ethers.js or Web3.js
• Solid understanding of PKI, digital signatures, and MPC protocols
• Deep knowledge of transaction lifecycles, gas optimization, and Layer 2 scaling solutions
• Experience with secure key management and cloud-based HSM (Hardware Security Modules)
• Proficient in Chinese language (both written and spoken)