Senior Defensive Security Engineer – Embedded Systems

Senior Defensive Security Engineer – Embedded Systems

Join to apply for the Senior Defensive Security Engineer – Embedded Systems role at Motorola Solutions.

At Motorola Solutions, we believe that everything starts with our people. We’re a global close-knit community, united by the relentless pursuit to help keep people safer everywhere. Our critical communications, video security and command center technologies support public safety agencies and enterprises alike, enabling the coordination that’s critical for safer communities, safer schools, safer hospitals and safer businesses. Connect with a career that matters, and help us build a safer future.

Silvus Technologies was acquired by Motorola Solutions in 2025, and is now part of its ecosystem of safety and security technologies. With deep roots in DARPA research, Silvus Technologies develops world‑class advanced communications technologies that are reshaping the tactical communications landscape. From pure line‑of‑sight to extreme non‑line‑of‑sight, Silvus radios form a self‑healing, self‑forming mesh network, enabling secure and reliable connectivity, including video and high‑bandwidth data.

Silvus is seeking a full‑time Senior Defensive Security Engineer – Embedded Systems that will report to the Director of Software Engineering on the Software Engineering team. The successful individual in this role will focus on protecting our embedded systems from potential threats by designing and implementing robust security measures, conducting security assessments and ensuring compliance with industry standards. The position will be based at Silvus Technologies’ headquarters in the heart of vibrant West Los Angeles, CA and is on a hybrid schedule;

a minimum of 3 days onsite per week is expected. On‑site days are Mondays, Wednesdays, and Thursdays.

• Design and implement Linux‑based security architectures for embedded systems, focusing on secure boot and kernel hardening.
• Develop and enforce Linux security features, including iptables, netfilter, and auditd for intrusion detection and prevention.
• Conduct security assessments and audits of Linux‑based embedded systems to identify and mitigate vulnerabilities.
• Integrate Linux security best practices into the development lifecycle (Dev Sec Ops ), emphasizing secure coding and configuration management.
• Manage vulnerabilities in Linux‑based embedded systems, including timely patching and kernel updates.
• Train teams on Linux security practices, including privilege management, file system permissions, and container security.
• Participate in incident response planning and execution for Linux‑based embedded systems.
• Implement Linux‑native encryption and authentication mechanisms (e.g., dm‑crypt, OpenSSL, PAM) for secure communications.

• Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, or related field (e.g., Mathematics, Computer Engineering).
• Minimum 5 years in cybersecurity, with at least 2 years in defensive security roles focused on Linux‑based systems.
• Expertise in Linux network security, secure coding, or embedded systems security.
• Coding/scripting in C/C++, Python, Bash, or assembly for Linux environments.
• Familiarity with Linux security tools like auditd, Lynis, or vulnerability scanners.
• Security Clearance:
  Active U.S. Government SECRET clearance or the ability to obtain one within 12 months of hire.
• NOTE - Must be a U.S. Person (U.S. Citizen or U.S. Permanent Resident) due to clients under U.S. federal contracts.

• Master’s degree in Cybersecurity, Computer Science, Information Technology, or related field.
• One or more of the following certifications: CISSP, CISM, GIAC Security Expert (GSE), CompTIA Security+, or Linux‑specific (e.g., LFCS, RHCE).
• Hands‑on experience implementing Linux security controls, such as SELinux, App Armor, or iptables, and conducting security assessments.
• Proficiency in Linux security frameworks, such as CIS Benchmarks, NIST SP 800‑53, or STIGs.
• Broad experience with Linux secure development lifecycle (SDL) practices.
• Knowledge of…