> Markdown version of [/jobs/ext/2250591-senior-cyber-security-engineer](https://www.wearedevelopers.com/jobs/ext/2250591-senior-cyber-security-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Cyber Security Engineer - **Company:** Cubic Corporation - **Location:** St. Louis, MO, United States - **Experience:** Expert - **Salary:** $128,000.0 - $153,000.0 - **Contract:** Permanent contract - **Skills:** Cloud Computing, Cyber Security, Information Systems, Software Vulnerability Management, Data Logging, Kubernetes, Information Technology, Plan of Action and Milestones - **Published:** August 26, 2026 - **Apply:** https://cubic.wd1.myworkdayjobs.com/cubic_USA_careers/job/USA-Saint-Louis-MO-Customer-Site/Senior-Cyber-Security-Engineer_REQ_49789 ## About the Role * Bachelor's degree in cybersecurity, information systems, computer science, engineering, or a related field. * At least 8 years of relevant cybersecurity, information-assurance, or security-engineering experience. * Demonstrated experience supporting ATO packages and the federal Risk Management Framework. * Knowledge of security controls, assessment procedures, vulnerability management, and continuous monitoring. * Experience developing security documentation and maintaining authorization evidence. * Working knowledge of NIST SP 800-53 controls, RMF, eMASS, STIGs/SRGs, vulnerability management, continuous monitoring, and POA&M management. * Experience securing cloud, hybrid, containerized, Kubernetes, or tactical-edge environments. * Strong analytical, organizational, written, and verbal communication skills. * Ability to work independently at a customer site while collaborating with a distributed project team. * Active TOP Secret security clearance with ability to obtain SCI. * DoD 8570/8140-compliant certification appropriate to the position. Preferred Qualifications * Master's degree in cybersecurity or a related technical discipline. * Experience supporting defense, Intelligence Community, or other classified federal programs. * Experience securing containerized, cloud-based, or distributed enterprise systems. * Familiarity with government security policies, security technical implementation guidance, and automated compliance tools. * Experience coordinating with Security Control Assessors or Authorizing Officials. * CISSP, CAP/CGRC, CASP+, or another relevant advanced cybersecurity certification. ## Description Cubic Digital Intelligence is seeking a Senior Cybersecurity Engineer to support the security engineering and authorization of a mission-focused system for a U.S. Government customer. The successful candidate will lead cybersecurity compliance activities and work closely with customer security personnel, system engineers, and program leadership to help obtain and maintain an Authority to Operate (ATO). This position is contingent upon contract award, funding, and customer approval., * Lead cybersecurity engineering and Risk Management Framework activities supporting system authorization. * Develop, review, and maintain security plans, control implementations, risk assessments, and authorization artifacts. * Coordinate with customer authorizing officials, security representatives, system owners, and engineering teams. * Assess system designs and configurations against applicable government security requirements. * Guide the implementation and documentation of technical, operational, and management security controls. * Perform security-control assessments, vulnerability reviews, compliance checks, and risk analysis. * Track findings, plans of action and milestones, dependencies, and remediation activities through closure. * Support system hardening, secure configuration, access control, auditing, logging, and continuous monitoring. * Evaluate proposed system changes for cybersecurity and authorization impacts. * Prepare for and participate in security reviews, assessments, test events, and authorization meetings. * Translate cybersecurity requirements into actionable engineering tasks. * Communicate security risks, status, and recommendations to technical and program leadership. * Support ongoing compliance and maintenance of the authorization baseline after ATO approval. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Understanding Kubernetes in a visual way](https://www.wearedevelopers.com/videos/100085-understanding-kubernetes-in-a-visual-way) - [Thinking Differently - How to Make Money from Cyber Attacks & Cheats](https://www.wearedevelopers.com/videos/745-thinking-differently-how-to-make-money-from-cyber-attacks-cheats) - [Crypto-secure Data Management with In-Database Blockchain](https://www.wearedevelopers.com/videos/632-crypto-secure-data-management-with-in-database-blockchain) - [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large) - [One Pipeline, Three Regulator - SBOM Compliance for the Developer](https://www.wearedevelopers.com/videos/100169-one-pipeline-three-regulator-sbom-compliance-for-the-developer) ## Related Articles - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Understanding and Mitigating Common Web Vulnerabilities](https://www.wearedevelopers.com/magazine/565-understanding-and-mitigating-common-web-vulnerabilities) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [7 Cloud Computing Trends Coming in 2025 for Developers](https://www.wearedevelopers.com/magazine/412-7-cloud-computing-trends-coming-in-2025-for-developers) - [Events like RSAC Get You CISOs. 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