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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Defensive Security Engineer - Embedded Systems - **Company:** Silvus Technologies - **Location:** Los Angeles, CA, United States - **Experience:** Expert - **Salary:** $140,000.0 - $200,000.0 - **Contract:** Permanent contract - **Skills:** Kubernetes Security, Software System Penetration Testing, User Authentication, Authentication Protocols, C++ (Programming Language), Configuration Management, CompTIA Security+, Cyber Security, Linux, Embedded C, File System Permissions, Hardware Security Module, Intrusion Detection and Prevention, Key Management, Network Security, Linux System Administration, Linux Security Modules, OpenSSL, Secure Coding, Software Engineering, Scripting, Cloud Platform System, Cyber Threat Analysis, SC Clearance, Selinux, Information Technology, Iptables, CIS Benchmarks, U-Boot, Devsecops, Docker, Vulnerability Analysis - **Published:** September 4, 2026 - **Apply:** https://startup.jobs/senior-defensive-security-engineer-embedded-systems-silvus-technologies-7796629 ## About the Role * High School diploma or GED plus 5 years of experience in cybersecurity, with at least 2 years of experience in defensive security roles focused on Linux based systems (e.g., penetration testing, red teaming, vulnerability assessment). * Expertise in Linux network security, secure coding, or embedded systems security. * Coding/scripting in embedded C/C++ 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 15 months of hire. * Must be a U.S. Citizen due to clients under U.S. government contracts. * All employment is contingent upon the successful clearance of a background check and drug test. PREFERRED KNOWLEDGE, SKILLS AND ABILITIES * Bachelor or 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, AppArmor, 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 TPM or Secure Enclave. * Demonstrated experience designing secure Linux communication systems with encryption, authentication, and key management. * Familiarity with mobile ad-hoc networking security on Linux platforms. ## Description Silvus is seeking a Senior Defensive Security Engineer - Embedded Systems who 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., * 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 (DevSecOps), 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. * Perform other related duties of which the above are representative. ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [Enhancing Workload Security in Kubernetes](https://www.wearedevelopers.com/videos/356-enhancing-workload-security-in-kubernetes) ## Related Articles - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Events like RSAC Get You CISOs. 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