Senior Principal Software Engineer - Crypto

**Overview** OCI is hiring a Sr Principal Software Engineer for the Crypto organization's KMS team. This senior IC will guide the architecture and operational maturity of a Tier 0 key management service that protects customer cryptographic keys and internal OCI service keys on HSM\-backed infrastructure. The role spans hardware, security controls, distributed systems, and service ownership for one of OCI's most critical trust platforms. **Why OCI** OCI gives senior engineers the chance to work on foundational cloud services where technical decisions directly affect customer trust, regional resilience, and the security posture of large\-scale enterprise workloads. KMS is a rare opportunity to shape the architecture of a security\-critical service from the hardware boundary through distributed control planes while helping define how AI can be introduced responsibly into a Tier 0 environment. **Responsibilities** * Define and drive the short\- and long\-term architecture for OCI KMS across HSM\-backed key management, service software, distributed systems, and regional reliability. * Lead technical strategy for a Tier 0 service where durability, recoverability, and operational rigor are fundamental product requirements. * Partner with security, hardware/platform, SRE, product, and dependent OCI service teams to reduce systemic risk and improve service resilience. * Drive operational excellence through observability, incident learning, SLO discipline, failure\-mode analysis, and pragmatic engineering execution. * Evaluate and shape responsible AI opportunities for KMS while preserving security boundaries, customer trust, and compliance expectations. * Mentor senior engineers, raise design quality, and influence architecture decisions across teams without requiring direct reporting authority. **Qualifications** * Experience leading architecture for large\-scale cloud infrastructure, distributed systems, or security\-critical services at senior IC level. * S