Senior Defensive Security Engineer – Embedded Systems

Senior Defensive Security Engineer – Embedded Systems

Silvus Technologies is dedicated to one mission: connecting those who keep us safe. We deliver the most advanced Mobile Ad‑hoc Network (MANET) radios powered by our custom and ever‑evolving Mobile‑Networked MIMO waveform. Our radios and waveform provide vital communications for mission‑critical applications in the harshest environments—from underground tunnels to high altitude balloons.

Silvus Stream Caster® radios are rapidly adopted worldwide by U.S. Departments of Defense, international, federal, state, and local law enforcement agencies, and by industry leaders in the Super Bowl, Grammys, drones, robots, and other unmanned systems manufacturers.

Wouldn’t you like to join an incredibly talented group of people, doing very challenging work, with the prime directive of “Keeping Our Heroes Connected”?

Following its acquisition by Motorola Solutions, Silvus Technologies is entering a new phase of scale and strategic impact. We are expanding our Strategic Growth organization to shape demand early, influence requirements, and embed Silvus Technologies into future programs of record across the U.S. Department of Defense.

The position is based at Silvus Technologies’ headquarters in West Los Angeles, CA, and is on a hybrid schedule with a minimum of 3 days onsite per week (Mondays, Wednesdays, 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 Linux threat intelligence and threat modeling.
• Familiarity with Linux container security (e.g., Docker, Podman) and cloud environments.
• Strong communication skills to explain Linux security concepts to technical and non‑technical audiences.
• Collaborative teamwork with cross‑functional groups.
• Experience securing resource‑constrained Linux‑based embedded systems.
• Understanding of real‑time Linux systems and their security implications.
• Knowledge of Linux hardware security integration, such as…