Senior Staff/Staff Cryptography Engineer

Responsibilities

• Design, assess migration paths for, and implement post-quantum cryptography (PQC) algorithms within existing signature and key management systems; track the latest developments in cutting-edge PQC standards such as lattice-based cryptography
• Design and develop the underlying cryptography library for MPC wallet / Web3 security products
• Research Web3-ecosystem cryptography technologies and produce technology selection reports and related technical documentation
• Conduct security audits of wallet-layer signature code and cryptographic protocol implementations
• Participate in defining the team's cryptography technical standards and enforce security red lines for cryptography-related code

Requirements

• Master's degree or above in Cryptography, Mathematics, Computer Science, Cybersecurity, or a related field
• Solid theoretical foundation in cryptography, including public-key cryptosystems, symmetric/asymmetric cryptography principles, lattice theory fundamentals, security protocol design, and blockchain cryptography applications
• In-depth research experience in post-quantum cryptography; familiar with lattice-based cryptography and hash-based signatures; knowledge of NIST PQC standard algorithms (Kyber, Dilithium, SPHINCS+, etc.); experience with algorithm migration or engineering implementation is a plus
• In-depth research experience in secure multi-party computation (MPC); familiar with threshold signature and secret sharing protocol principles and engineering implementation
• Some research background in zero-knowledge proofs (e.g., zk-SNARK/zk-STARK), homomorphic encryption, or related cryptographic theory
• Proficient in at least one of: C/C++, Rust, Go, or Java

Nice-to-Haves

• Published papers at international cryptography conferences
• Fluent English (listening, speaking, reading, writing)