Job Description and Responsibilities: Research cutting-edge cryptography and train colleagues; Study codes and operating principles of mainstream digital assets; Review security loopholes and propose solutions; Write relevant documentation. Qualifications and Skills: Master's degree or higher in cryptography/information security related fields; Understand ECDSA, ed25519, BLS12381 and other signature curves; Understand signature mechanisms of mainstream digital assets; Solid data structures and algorithms foundation; Familiar with at least one language (C/C++/Java/Python/Golang/Rust); Good documentation writing; Publishing an international cryptography paper is a big plus; Fluent English is a plus.