Embedded Systems Security Engineer

RITWIK Infotech Inc; Foster City (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

RITWIK Infotech Inc. in Foster City, CA seeks an Embedded Systems Security Engineer to harden our next‑gen embedded Linux platform and bridge hardware security, kernel hardening and secure user-space containment.

You will design hardware root of trust and secure boot, implement dm-verity, develop a TEE (OP‑TEE), and enforce strong sandboxing with SELinux/AppArmor while enabling CI/CD signing pipelines. Strong C and scripting skills, ARM TrustZone expertise, Yocto/Buildroot experience, and

Qualifications

• Bachelor's degree or equivalent practical experience in a related field.
• 6+ years Embedded Linux development, board bring-up, BSP customization.
• 3+ years deploying device-level security features into production hardware.
• Expert knowledge of bootloader configurations (U-Boot/Barebox) and Linux storage/security subsystems (dm-crypt, dm-verity).
• Deep understanding of ARM TrustZone (ARMv7-A/ARMv8-A; EL1/EL3).
• Experience with SELinux/AppArmor and Linux containment (cgroups, namespaces).
• Proficiency with Yocto Project or Buildroot.
• Programming in C and scripting in Python or Bash.

Responsibilities

• Platform Hardening & Architecture: Design Hardware Root of Trust and Secure Boot from bootloader through Linux kernel.
• Storage & Integrity Management: Implement dm-verity and encryption at rest.
• Trusted Execution Environments: Develop/integrate a TEE (OP-TEE) and Secure Applications.
• Application Sandboxing: Enforce isolation with SELinux/AppArmor, cgroups, namespaces, and seccomp.
• DevSecOps Automation: Build automated signing pipelines in CI/CD to sign bootloaders, kernels, OTA payloads (HSMs).
• Production Provisioning Support: Scripts/tools for burning eFuses/OTP securely and end-of-line security tests.
• System Resilience: Architect multi-slot boot recovery (A/B) for OTA/boot reliability.

Skills

Embedded Linux

Board bring-up

BSP customization

Device security

Bootloader configs

dm-verity/dm-crypt

SELinux/AppArmor

Yocto Project

C programming

Python/Bash

ARM TrustZone

OP-TEE

Education

Bachelor's degree in Computer Science / Computer Engineering / Electrical Engineering, or equivalent practical experience

Tools

U-Boot

Barebox

Linux kernel

Job description

Role : 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.