We are seeking a senior backend engineer with expertise in cryptography to join our team focused on developing and maintaining HashiCorp Vault. In this role, you will work closely with security experts to enhance the platform’s cryptographic capabilities, ensuring robust data protection and key management solutions. Your day-to-day responsibilities include designing scalable systems, implementing encryption algorithms, and integrating third-party security tools. Proficiency in Go is essential, along with experience in Python or Ruby for scripting tasks. You should have a strong background in cryptography, including knowledge of PKI, symmetric and asymmetric encryption, and secure key exchange protocols. This position involves working on high-scale infrastructure that supports complex business operations, requiring a deep understanding of both security principles and distributed systems architecture.