> Markdown version of [/jobs/ext/2562188-senior-information-systems-security-engineer-isse](https://www.wearedevelopers.com/jobs/ext/2562188-senior-information-systems-security-engineer-isse). 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 Information Systems Security Engineer (ISSE) - **Company:** Amentum Services, Inc. - **Location:** Chantilly, VA, United States - **Experience:** Expert - **Salary:** $190,000.0 - $225,000.0 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Amazon Web Services, Cloud Computing, Cyber Security, Information Security Management, Network Management System, Software Engineering, Verification and Validation (Software), Systems Integration, Software Vulnerability Management, Software Security, Containerization, Splunk, Plan of Action and Milestones - **Published:** August 14, 2026 - **Apply:** https://dejobs.org/x/x/5F3D625F18E247A1B0ABD486AD79FCA3/job/ ## About the Role We are seeking a highly skilled and experienced Principal Information System Security Engineer to join our team. The successful candidate will bring extensive knowledge and hands-on experience in cybersecurity engineering, risk management frameworks, and secure software development lifecycle management. This role involves leading and managing accreditation efforts, conducting risk assessments, and collaborating with cross-functional teams to ensure the highest standards of information security across our applications and systems., * Bachelor's Degree in Security and Intelligence, or a related field. * Security+ CE, AWS Advanced Architect, and Splunk Fundamentals 1 and 2 certifications. * Extensive experience in information system security engineering, risk assessment, and vulnerability management. * Strong understanding of cloud computing services, secure software development lifecycles, and containerization security. * Proficient in creating and maintaining security documentation and Standard Operating Procedures (SOPs). * Demonstrated experience in leading technical exchange meetings, managing project deliverables, and ensuring compliance with security standards and policies. Clearance Required: * TS/SCI w/ poly Minimum Education: * B.S. in Mathematics and/or Security and Intelligence, or a related field. Minimum Years of Experience: * 8 Preferred: * Excellent technical writing and documentation skills * Proven ability to collaborate with multidisciplinary teams ## Description * Oversee cybersecurity measures for applications within an agile software environment. * Manage the assessment and authorization (A&A) efforts for accrediting and reaccrediting system authorizations. * Utilize common control provider (CCP) knowledge to secure authorization for applications on new platforms. * Work closely with stakeholders to ensure seamless decommissioning and accreditation of replacement systems with no downtime. * Conduct technical exchange meetings (TEMs) and liaise with key departments to facilitate A&A efforts. * Track and manage Plan of Action and Milestones (POAMs) across all systems, ensuring completion and recommending remediation steps. * Conduct system self-scans to support initial, update, and reaccreditation efforts. * Perform technical planning, system integration, verification and validation, and risk assessments. * Create Basis of Estimate (BOE) documentation and other critical artifacts for system A&A efforts. * Develop and document security evaluation of test plans and procedures. * Provide documentation and recommendations for security best practices and risk management framework (RMF) accreditation. * Drive application security and secure software development lifecycles, including containerization security as per NIST SP 800190. * Conduct hands-on security testing, analyze test results, and recommend countermeasures. * Provide guidance on cloud computing services, deployment architecture, and network management tools. * Review project requirements and assist in the development and tracking of project tasks and client deliverables. * Communicate with clients on project specific activities and manage project related deliverables. * Facilitate process working groups to analyze existing processes and create new business strategies., Safety - Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams. Quality - Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations. Accordingly, each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts. Each employee must read and understand his/her Quality Management and Customer Satisfaction responsibilities. ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Green Cloud Computing](https://www.wearedevelopers.com/videos/592-green-cloud-computing) - [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) - [Our journey with Spring Boot in a microservice architecture](https://www.wearedevelopers.com/videos/511-our-journey-with-spring-boot-in-a-microservice-architecture) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large) ## Related Articles - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Understanding and Mitigating Common Web Vulnerabilities](https://www.wearedevelopers.com/magazine/565-understanding-and-mitigating-common-web-vulnerabilities) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Events like RSAC Get You CISOs. Developers Decide What Actually Gets Deployed.](https://www.wearedevelopers.com/magazine/693-events-like-rsac-get-you-cisos-developers-decide-what-actually-gets-deployed) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking)