Cryptography Engineer – Unifacator Security

Build the cryptographic security layer for a platform that uses biometric access to protect consent records and key exchanges. The work spans signing, key management, privacy-preserving validation, and security testing, with an emphasis on robust protocol implementation and a transition toward post-quantum cryptography.

• Implement digital-signature workflows that can move from ECDSA toward post-quantum cryptography.
• Design and deploy key rotation and recovery mechanisms, including approaches based on Shamir Secret Sharing.
• Develop zero-knowledge proof components for validating attributes while limiting information disclosure.
• Conduct penetration testing and threat modeling to identify weaknesses in protocols and integrations.
• Help secure biometric-gated encryption and the consent and key-exchange flows it supports.

• At least 5 years of applied cryptography experience.
• Proficiency in C++ or Rust.
• Knowledge of Kyber, Dilithium, and biometric key binding.
• A strong track record implementing secure protocols.

• Full-time remote role.
• Compensation listed as either $130,000-$160,000 or $90,000 plus 0.75%-1.5% equity.