Note: The job is a remote job and is open to candidates in USA. Positron AI is building next-generation AI inference accelerators designed for low-latency, high-throughput large language model inference. The Hardware Security Architect will own the security architecture for the AI accelerator platform, ensuring protection of customer models and data throughout the product lifecycle.
Responsibilities
- 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
- 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
- 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
- Partner with firmware, software, architecture, DFT, validation, manufacturing, and cloud security teams to embed security throughout the product lifecycle
- 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
- Apply AI-assisted techniques for threat modeling, security verification, coverage analysis, and documentation
Skills
- 12+ years of experience in hardware security architecture
- Deep expertise in secure boot and hardware root of trust design
- Strong cryptography and key management ability
- Hands-on experience with secure manufacturing processes
- A solid grasp of silicon bring-up in a security-critical context
- Experience with AI accelerator platforms
- Familiarity with HSMs and TPMs
- Expert-level proficiency in TEE, CCA, and Arm TrustZone architectures
- Experience with confidential computing, PCIe IDE, and CXL IDE
Benefits
- Fully company-paid medical, dental, and vision insurance for you and your dependents
- Company-paid life and disability coverage, with voluntary options to add more
- Supplemental hospital, critical illness, and accident coverage available
- Unlimited paid time off, so you can truly unplug and recharge
- 13 paid company holidays
- Remote-first culture with a company-provided computer and home office setup
- 401(k) with company matching, eligible from day one
Company Overview