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S 105 - Embedded Systems Security Engineer

DORLECO - 5.0

Foster City, CA Job Details Full-time 18 hours ago Qualifications Software engineering Embedded systems Firmware Firmware development OS Kernels Computer hardware Data access controls implementation Operating system security ARM Embedded C Access control management Security technology solutions implementations Full Job Description Job Title - Embedded Systems Security Engineer Location - Onsite in Foster City, CA | 5 days in office We are looking for an Embedded Systems Security Engineer to implement security solution 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 defense 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:

Platform Hardening & Architecture:

Design and implement the Hardware Root of Trust and Secure Boot architecture from the first-stage bootloader through the Linux kernel.

Storage & Integrity Management:

Implement dm-verity for cryptographically verified read-only root filesystems and secure data encryption at rest.

Trusted Execution Environments:

Develop, integrate, and maintain a TEE (e.g., OP-TEE) and author Secure/Trusted Applications (TAs).

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.

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.

Production Provisioning Support:

Collaborate with manufacturing teams to write robust scripts and tools for burning permanent hardware configuration fuses (eFuses / OTP memory) securely, designing end-of-line (EOL) test software to validate security features before shipping.

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:

Education:

Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, or a related technical discipline (or equivalent practical experience).

Core Experience:

6+ years of professional experience in Embedded Linux development, board bring-up, and Board Support Package (BSP) customization.

Security Focus:

3+ years of dedicated, hands-on experience deploying device-level security features into physical production hardware.

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).

Hardware Security Architecture:

Deep understanding of modern processor security architectures, specifically ARM TrustZone (ARMv7-A / ARMv8-A, Exception Levels EL1-EL3).

Sandboxing & Access Controls:

Proven track record implementing SELinux/AppArmor policies and utilizing standard Linux containment tools (cgroups, namespaces).

Build Automation:

Proficiency with embedded Linux build automated frameworks like the Yocto Project (BitBake recipe design) or Buildroot.

Programming:

Advanced proficiency in C and strong scripting skills in Python or Bash.

Preferred Qualifications:

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).

Manufacturing Scale:

Prior experience working with Contract Manufacturers (CMs) or internal factory lines to deploy secure key-injection and fuse-burning protocols.

Advanced Sandboxing:

Experience with embedded container runtimes (e.g., LXC, crun) or lightweight sandboxing frameworks tailored for resource-constrained architectures.

Anti-Rollback Protection:

Experience designing secure versioning and hardware-enforced anti-rollback strategies for OTA updates.