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 other engineers to design, implement, and secure scalable backend services using advanced cryptographic techniques. Your day-to-day responsibilities include building robust encryption solutions, enhancing security features, and collaborating on the development of new modules for Vault. Proficiency in Go is essential, along with a strong understanding of REST APIs, cloud infrastructure (AWS or GCP), and experience with key management systems. This position requires deep knowledge of cryptographic algorithms and protocols to address complex security challenges at scale within our rapidly growing product ecosystem.