Principal Platform Security Architect -Firmware & Operating Systems at ARM – Cambridge | Jobyssey

Job Overview:

We are looking for a Platform Security Architect to support the design and improvement of security mechanisms across platform firmware and embedded Linux environments.

This is a hands-on technical role spanning both embedded systems (e.g., Yocto-based platforms) and data center systems (e.g., BMC and platform firmware). The work includes securing boot chains, firmware update mechanisms, and Linux-based management environments, including embedded controllers and server management subsystems.

You will work closely with firmware and platform engineering teams to help integrate security controls across BIOS, BMC, and device firmware, and collaborate with internal security evaluation teams to support validation and continuous improvement of these controls.

The role involves working across low-level firmware, embedded Linux, and system hardening, with opportunities to contribute at both design and implementation levels.

Responsibilities:

Firmware Security: Evaluate and support integration of security mechanisms across BIOS, BMC, and device firmware, including secure boot, firmware verification, update flows, rollback protection, and debug controls
Embedded Linux & BMC Security: Contribute to improving the security of Linux-based management environments through system hardening, service isolation, access control, and secure configuration
System Hardening: Identify potential attack surfaces and configuration gaps, and help apply and validate hardening measures and secure defaults
Security Validation & CI Integration: Collaborate with internal security evaluation and engineering teams to support testing, develop validation tools/scripts, and integrate security checks into CI workflows
Threat Analysis: Support threat modeling and analysis of firmware and management plane components to identify attack paths and improvement areas

Required Skills and Experience :

Hands-on experience with embedded Linux systems, including building and customizing platforms using Yocto/OpenEmbedded
Hands-on experience implementing and validating Linux hardening controls, including service/interface hardening, privilege management, and reduction of system attack surface
Experience contributing to the implementation or integration of security controls in firmware or embedded environments
Strong understanding of low-level firmware and boot flows, including BIOS/UEFI, bootloaders, and platform firmware components
Experience with secure boot chains and firmware trust models, including firmware verification and UEFI-based systems
Experience working with firmware update mechanisms, including signing, verification, and rollback protection
Familiarity with Arm architecture and boot processes, including early boot stages and firmware–hardware interaction
Familiarity with platform interconnects such as PCIe, and associated security considerations in device and data-center environments
Experience developing automation, validation tools, or scripts, including integration into CI workflows
Proficiency in C/C++ for systems or embedded development, with the ability to work with low-level components when needed
Understanding of Linux security fundamentals, including authentication, authorization, and system-level protections
Familiarity with file system and data protection mechanisms, including encryption approaches such as eCryptfs or similar
Ability to analyze and reason about firmware and system-level attack surfaces

“Nice To Have” Skills and Experience :

Experience with BMC platforms or ecosystems such as OpenBMC
Experience with Linux security features (e.g., SELinux, AppArmor, capabilities)
Experience with firmware analysis, fuzzing, or security testing techniques
Familiarity with container security in embedded or management environments
Familiarity with hardware roots of trust (e.g., TPM, DICE)
Familiarity with networking and network security concepts, particularly in management or data-center environments

In Return:

Please note that a relocation package (including visa sponsorship support) is available for this role, for candidates who require it.

#LI-CI

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