Job Responsibilities

1. Responsible for designing and implementing the wallet’s core modules, including:
2. ECDSA/EdDSA signature algorithms’ low-level implementation and performance optimization;
3. secp256k1 elliptic curve parameter implementation and validation;
4. (t,n)-Threshold Signature Scheme (TSS) implementation (e.g., GG18, GG20, CMP protocols);
5. Implementation and optimization of distributed key generation (DKG) and multi-party signing processes (MPC protocol collaboration);
6. Secure construction of transaction signing, verification, and recovery workflows.
7. Participate in MPC wallet system architecture design, driving integration of multi-party signatures, key sharding, and other modules with on-chain account systems.
8. Research and implement leading threshold signature schemes and their practical deployments (GG18, GG20, CMP, etc.), ensuring adherence to state-of-the-art security standards.
9. Optimize C++/Golang/Rust security libraries based on business requirements to guarantee stable operation of signing modules in high-concurrency, low-latency environments.
10. Collaborate with security researchers, DevOps engineers, and on-chain developers to build a secure, auditable wallet signing infrastructure.

Qualifications

Core Skills:

• Proficient in common elliptic curve signature algorithms (e.g., ECDSA, EdDSA) and underlying mathematics (finite fields, group operations);
• Familiar with design and implementation principles of threshold signature protocols (GG18, GG20, CMP20 and other MPC-based TSS);
• Understanding of distributed key generation (DKG), secret sharing, zero-knowledge proofs, and related security protocol mechanisms;
• Expertise in at least one programming language and its cryptographic libraries (Golang/C++/Rust);
• Strong experience in implementing cryptographic protocols, with deep knowledge of secure coding practices, memory safety, and concurrency safety.