Senior Systems Security Engineer

Senior Systems Security EngineerATG is seeking a Senior Systems Security Engineer to support the Naval Surface Warfare Center Dahlgren Division (NSWCDD). The selected candidate will engineer, implement, and maintain secure information systems supporting Department of the Navy missions. This position provides senior cybersecurity engineering support throughout the system lifecycle, ensuring compliance with RMF, DoD cybersecurity policies, and security engineering best practices.Key Responsibilities:Design and implement secure system architectures for DoD information systems.Support RMF lifecycle activities including ATO packages, eMASS, POA&Ms, STIG implementation, and continuous monitoring.Perform security engineering, risk assessments, vulnerability remediation, and system hardening.Coordinate with ISSOs, ISSMs, engineers, and Government stakeholders.Support cybersecurity testing, audits, and compliance reporting.Develop security documentation and technical recommendations.Qualifications Required:Bachelor's degree in Information Technology, Cybersecurity, Computer Science, Engineering, or related field.Minimum seven (7) years of professional systems engineering experience, including cybersecurity or systems security engineering.Current DoD 8570/8140 IAT Level III certification.Ability to obtain and maintain a Tier 5 investigation.Experience with RMF, NIST 800-53, STIGs, ACAS, and eMASS.U.S. Citizenship.Desired:CISSP or CASP+ certification.Experience supporting NAVSEA or Department of the Navy.Experience with Windows, Linux, and virtualization technologies.Physical and Environmental Conditions: Normal Office Environment. Requires Sitting, Standing, Near Acuity, Speaking with colleagues and customers, Listening, Sight, Use of hands/fingers.Additional Benefits:Performance Bonuses and annual salary reviewsHealth, dental, and vision insuranceShort Term Disability, Long Term Disability, and Life Insurance401(k) plan with company matchOpportunities for professional growth and developmentA collaborative and inclusive work environmentATG is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, religion, creed, color, national origin, ancestry, sex (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, medical condition, marital or domestic partner status, sexual orientation, gender, gender identity, gender expression and transgender status, mental disability or physical disability, genetic information, military or veteran status, citizenship, low-income status or any other status or characteristic protected by applicable law. Learn more about your rights under Federal EEO laws and supplemental language. ATG