Role: Senior Embedded Security Engineer
Location: Foster City, CA (5 Days Onsite) (LOCALS ONLY)
Exp: Min 10+ yrs
Job Description
We are looking for an Embedded Systems Security Engineer to implement security solutions to harden our next-generation embedded Linux platform.
In this role, you will bridge the gap between low-level hardware security, kernel hardening, and secure user-space application containment.
You will not only design cryptographic defence mechanisms but will also automate security pipelines in CI/CD and partner directly with manufacturing teams to ensure devices are provisioned securely and reliably at scale without production risks.
Roles & Responsibilities
1. Platform Hardening & Architecture: Design and implement the Hardware Root of Trust and Secure Boot architecture from the first-stage bootloader through the Linux kernel.
2. Storage & Integrity Management: Implement dm-verity for cryptographically verified read-only root filesystems and secure data encryption at rest.
3. Trusted Execution Environments: Develop, integrate, and maintain a TEE (e.g., OP-TEE) and author Secure/Trusted Applications (TAs).
4. Application Sandboxing: Enforce strict user-space isolation and sandboxing strategies using SELinux, AppArmor, cgroups, namespaces, and seccomp filters to protect core systems from untrusted applications.
5. DevSecOps Automation: Build automated cryptographic signing pipelines within CI/CD infrastructure (e.g., GitLab CI, GitHub Actions) to securely sign bootloaders, kernels, and OTA payloads using HSMs or secure key vaults.
6. Production Provisioning Support: Collaborate with manufacturing teams to write robust scripts and tools for burning permanent hardware configuration fuses (eFuses / OTP memory) securely.
Design end-of-line (EOL) test software to validate security features before shipping.
7. System Resilience: Architect multi-slot boot recovery layouts (e.g., A/B partitioning) to guarantee fail-safe resilience against failed OTA updates or corrupted boots.
Qualifications
1. Core Experience: 6+ years of professional experience in Embedded Linux development, board bring-up, and Board Support Package (BSP) customization.
2. Security Focus: 3+ years of dedicated, hands-on experience deploying device-level security features into physical production hardware.
3. Low-Level Systems: Expert knowledge of bootloader configurations (e.g., U-Boot, Verified Boot, Barebox) and customizing the Linux kernel storage/security subsystem (dm-crypt, dm-verity).
4. Hardware Security Architecture: Deep understanding of modern processor security architectures, specifically ARM TrustZone (ARMv7-A / ARMv8-A, Exception Levels EL1–EL3).
5. Sandboxing & Access Controls: Proven track record implementing SELinux/AppArmor policies and utilizing standard Linux container tools (cgroups, namespaces).
6. Build Automation: Proficiency with embedded Linux build automation frameworks such as the Yocto Project (BitBake recipe design) or Buildroot.
7. Programming: Advanced proficiency in C and strong scripting skills in Python or Bash.
Preferred Qualifications
1. Cryptography Expertise: Strong foundational knowledge of symmetric/asymmetric cryptography, hashing algorithms (SHA-256/384), public key infrastructure (PKI), and handling physical Hardware Security Modules (HSMs).
2. Manufacturing Scale: Prior experience working with Contract Manufacturers (CMs) or internal factory lines to deploy secure key-injection and fuse-burning protocols.
3. 3. Advanced Sandboxing: Experience with embedded container runtimes (e.g., LXC, crun) or lightweight sandboxing frameworks tailored for resource-constrained architectures.
4. Anti-Rollback Protection: Experience designing secure versioning and hardware-enforced anti-rollback strategies for OTA updates.
