# Principal Security Architect at Graphcore

AI Level 1, AI centrality 32 out of 100. Austin, Texas, United States; Milpitas, California, United States.

## Details

- Company: [Graphcore](https://jobsbylevel.com/companies/graphcore)
- AI level: AI Level 1 (score 32 out of 100)
- Location: Austin, Texas, United States; Milpitas, California, United States
- Posted: October 7, 2026
- Apply: https://jobsbylevel.com/go/247e5d00-38d6-4a2f-877a-ed069b87a01e

## Description

About Graphcore Graphcore is a global leader in artificial intelligence computing systems. We design advanced semiconductors, software, and data center infrastructure that provide the specialized processing power needed to advance AI while improving the efficiency required for broad adoption. As part of SoftBank Group, Graphcore belongs to a family of companies developing progressive technologies. Our teams bring together AI researchers, silicon designers, software engineers, and systems architects to solve sophisticated technical problems across the computing stack. The Opportunity As Principal Security Architect, you will define and lead the end-to-end hardware and firmware security strategy for Graphcore's next-generation AI server systems powered by Arm technology. You will establish security architecture across the system, from the system-on-chip and management controllers through firmware, virtualization, and container environments. Working within Advanced Architecture, you will protect AI models, training data, inference workloads, and platform intellectual property against remote, physical, and supply-chain threats. You will set technical direction, translate threat models into engineering requirements, and guide teams in delivering hardware-backed isolation, verified boot, secure lifecycle management, and attestation. What You Will Do Define the hardware and firmware security architecture for Arm-based AI server platforms and maintain a coherent security model across silicon, boards, firmware, virtualization, and system software. Lead the build and integration of Arm's secure computing framework and Realm Management Extension technologies to protect AI models and data in use from operating systems, hypervisors, and other tenants. Define platform, Baseboard Management Controller, and Rack Management Controller trust anchors, including secure boot, secure firmware update, device identity, provisioning, cryptographic key management, and lifecycle controls. Specify security requirements for high-speed interfaces and interconnects, including PCIe Gen5 and Gen6 and NVMe Storage Integrity and Data Encryption, to protect data moving among CPUs, AI accelerators, storage, and memory. Lead system-level threat modeling and define mitigations for side-channel attacks, fault injection, privilege escalation, physical tampering, and supply-chain risks. Guide the design and hardening of UEFI, Arm Trusted Firmware, OpenBMC, and related low-level software, including device authentication based on the Security Protocol and Data Model. Architect runtime audit, measurement, and remote attestation frameworks that provide verifiable evidence of platform identity, configuration, and software state. Translate security goals into clear engineering specifications, design requirements, assurance criteria, and review processes for hardware and software teams. Partner with silicon, hardware, firmware, networking, and systems teams to resolve security tradeoffs, review designs, and incorporate security requirements into technology roadmaps. Evaluate emerging threats, standards, and technologies, and represent Graphcore's technical requirements in relevant open-source and industry communities where appropriate. What You Will Bring An advanced degree or equivalent experience in computer science, computer engineering, cryptography, cybersecurity, or a related technical field, or equivalent practical experience. Extensive experience in hardware security, system-on-chip security, platform architecture, or a closely related field, including technical leadership at Principal, Staff, or Lead Architect scope. Deep knowledge of Arm architecture and security technologies, including Armv9, TrustZone, Confidential Compute Architecture, and the Realm Management Extension feature. Demonstrated experience in crafting server or platform security frameworks that use trusted platform modules, roots of trust, hardware cryptography, secure provisioning, and lifecycle

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