Hardware Security Architect, Principal

About this role

About Positron AI Positron AI is building next-generation AI inference accelerators designed from the ground up for low-latency, high-throughput large language model inference. Our first-generation ASIC, Asimov, is a cutting-edge accelerator targeting frontier AI workloads, with additional generations already underway. Role Overview Own the hardware security architecture for Positron's AI accelerator platform, ensuring protection of customer models, user data, firmware, intellectual property, and secure operation throughout the product lifecycle. This role spans architecture through production deployment. Key Responsibilities Silicon Security Architecture Define the overall silicon security architecture for Positron's platform. Own secure boot, hardware root of trust, chain of trust, authenticated firmware, and measured boot. Own secure debug, secure manufacturing, fuse programming, key provisioning, and device identity. Own key ladders, anti-rollback protections, JTAG security, scan access control, and lifecycle states. AI Asset Protection Protect customer models and weights through weight encryption and weight authentication. Secure data in motion via link encryption, PCIe security, CXL security, and on-chip fabric security. Own DRAM encryption, secure DMA, secure memory regions, and confidential computing techniques. Threat Modeling & Security Reviews Perform architecture security reviews and develop attack models across the platform. Mitigate physical attacks, fault injection, side-channel attacks, replay attacks, firmware compromise, and supply-chain attacks. Cross-Functional Partnership Partner with firmware, software, architecture, DFT, validation, manufacturing, and cloud security teams to embed security throughout the product lifecycle. Industry Engagement Stay current with NIST, FIPS, CCA, RISC-V security, and Arm security standards, as well as emerging areas like post-quantum cryptography and confidential AI. AI-Enabled Engineering Apply AI-assisted techn