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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Cybersecurity Security Engineer III - **Company:** The Sos - **Location:** Washington, DC, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, User Authentication, Cloud Computing Security, Cyber Security, Information Systems, Information Systems Security Architecture Professional, Information Systems Security Engineering Professional, Zero Trust Network Access, Single Sign-On, Cyber Warfare, Devsecops, Vulnerability Analysis - **Published:** October 16, 2026 - **Apply:** https://www.careerbuilder.com/job-details/cybersecurity-security-engineer-iii-washington-dc--ea5eecbe-faea-4943-95d8-9d69a5801f9d ## About the Role * Ten (10) or more years of cybersecurity engineering and/or project management experience * Two (2) or more years of leadership experience * Experience supporting cybersecurity design and integration * Experience supporting Zero Trust Architecture (ZTA) * Experience developing technology roadmaps, conducting market research, and supporting proofs of concept * Experience supporting security architecture and CONOPS * Experience supporting cloud security * Experience supporting AI/GenAI security integration * Experience supporting DevSecOps * Experience supporting vulnerability scanning tools * Experience supporting secure authentication and SSO * Experience supporting post-quantum cryptography concepts and PQC-enabled protocols * Experience with scripting and automation * Education: * Bachelor's Degree in engineering, information systems, cybersecurity, or equivalent experience as defined by role requirements * Certifications: At least one of: * Security+ * CCNA * SSCP And one of: * CISSP * CISSP-ISSAP * CISSP-ISSEP * CCSP * GCIA * GDSA * GCCC * GCPN * GCIH * Clearance/Suitability: Secret (eligible) ## Description Founded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. We deliver tailored solutions, tested leadership, and trusted results to enable national security missions worldwide.This position is contingent upon contract award *OverviewSOSi is seeking a Cybersecurity Security Engineer III to support cybersecurity engineering activities in alignment with our customer. This role is responsible for supporting security architecture, engineering, technology integration, and modernization initiatives across enterprise cyber defense environments, including Zero Trust, cloud security, DevSecOps, and emerging technologies.ResponsibilitiesSupport cybersecurity engineering and security architecture activities across enterprise environmentsSupport design and integration of Zero Trust Architecture (ZTA) capabilities and security controlsDevelop and support technology roadmaps, engineering recommendations, market research, and proofs of conceptSupport engineering and integration of cloud security, secure authentication, and single sign-on (SSO) capabilitiesSupport DevSecOps practices and secure technology integration activitiesSupport security engineering activities involving vulnerability scanning tools, cyber defense technologies, and enterprise security platformsSupport engineering and integration of AI/GenAI-related security capabilitiesSupport post-quantum cryptography concepts, cryptographic inventory activities, and PQC-enabled protocolsSupport development and implementation of security CONOPS and engineering documentationUse scripting and automation to support engineering, integration, and security operations activitiesExperience:Ten (10) or more years of cybersecurity engineering and/or project management experienceTwo (2) or more years of leadership experienceExperience supporting cybersecurity design and integrationExperience supporting Zero Trust Architecture (ZTA)Experience developing technology roadmaps, conducting market research, and supporting proofs of conceptExperience supporting security architecture and CONOPSExperience supporting cloud securityExperience supporting AI/GenAI security integrationExperience supporting DevSecOpsExperience supporting vulnerability scanning toolsExperience supporting secure authentication and SSOExperience supporting post-quantum cryptography concepts and PQC-enabled protocolsExperience with scripting and automationEducation:Bachelor's Degree in engineering, information systems, cybersecurity, or equivalent experience as defined by role requirementsCertifications:At least one of:Security+CCNASSCPAnd one of:CISSPCISSP-ISSAPCISSP-ISSEPCCSPGCIAGDSAGCCCGCPNGCIHClearance/Suitability: Secret (eligible)Work EnvironmentNormal office conditions with potential to perform duties in deployed locations.Core hours of operation are Monday through Friday, 0600 - 1700.May be requested to work evenings and weekends to meet program and contract needs.Working at SOSiAll interested individuals will receive consideration and will not be discriminated against for any reason.