Information System Security Officer (Engineer Info Assurance 4)

HII - Mission Technologies is currently seeking a Senior Information System Security Officer (ISSO) to work out of Fairfax, VA in support of the DoD/DoW Advana War Data Platform designed to aggregate operational, intelligence, logistics, and sensor data from multiple domains, enable Joint All-Domain Command and Control (JADC2) by providing a common data fabric, and support AI/ML applications for predictive analytics, targeting, and mission planning., * Executes day-to-day cybersecurity operations supporting mission systems across Department of Defense unclassified and classified environments.

• Implements and validates technical security controls in alignment with Risk Management Framework requirements and approved security baselines.

• Conducts vulnerability scanning, configuration validation, and compliance checks using tools such as Tenable, Splunk, SCAP scanners, Active Directory, VMware, and endpoint security platforms.

• Processes security-related change requests, validating technical impact, documenting control changes, and coordinating implementation with system administrators and DevSecOps teams.

• Maintains continuous monitoring evidence, including configuration artifacts, scan results, control test outputs, and incident documentation, within eMASS and SharePoint repositories.

• Investigates cybersecurity incidents, anomalous activity, and policy violations, supporting containment, remediation, and reporting activities in coordination with incident response teams and Senior Information Security Officers.

• Tracks vulnerability remediation actions, verifies corrective measures, and updates security documentation to reflect current system posture.

• Supports control testing activities, assessment preparation, and audit engagements by providing accurate, traceable technical evidence.

• Contributes to operational readiness, system availability, and mission assurance through disciplined execution, timely remediation, and accurate security documentation.

• Reinforces program values of accountability, operational excellence, and protection of information supporting Combatant Command, Defense Agency, and joint mission operations.

• 10 years relevant experience with Bachelors in related field; 7 years relevant experience with Masters in related field; 4 years relevant experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 13 years relevant experience.

• IAM I (CompTIA Security+ CE, ISC² CAP, ISC² SSCP, or GIAC GSLC) certified

• Must have an active Secret security clearance

• US Citizenship

Preferred Requirements

• Familiarity with Advana architecture, Palantir Foundry, or similar data integration platforms

• Experience with data governance frameworks and metadata management

• Agile/SAFe delivery experience in secure environments

Physical Requirements

May require working in an office, industrial, shipboard, or laboratory environment. Capable of climbing ladders and tolerating confined spaces and extreme temperature variances.

HII is more than a job - it's an opportunity to build a new future. We offer competitive benefits such as best-in-class medical, dental and vision plan choices; wellness resources; employee assistance programs; Savings Plan Options (401(k)); financial planning tools, life insurance; employee discounts; paid holidays and paid time off; tuition reimbursement; as well as early childhood and post-secondary education scholarships. Bonus/other non-recurrent compensation is occasionally offered for qualified positions, and if applicable to this role will be addressed by the recruiter at the screening phase of application.

This opportunity resides with Warfare Systems (WS), a business group within HII's Mission Technologies division. Warfare Systems comprises cyber and mission IT; electronic warfare; and C5ISR systems. HII works within our nation's intelligence and cyber operations communities to defend our interests in cyberspace and anticipate emerging threats. Our capabilities in cybersecurity, network architecture, reverse engineering, software and hardware development uniquely enable us to support sensitive missions for the U.S. military and federal agency partners. Meet HII's Mission Technologies Division Our team of more than 7,000 professionals worldwide delivers all-domain expertise and advanced technologies in service of mission partners across the globe. Mission Technologies is leading the next evolution of national defense - the data evolution - by accelerating a breadth of national security solutions for government and commercial customers. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class. Find the role that's right for you. Apply today. We look forward to meeting you., We build the world's most powerful, survivable naval ships and defense technology solutions that safeguard our seas, sky, land, space and cyber. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals. Recognized as one of America's top large company employers, we are a values and ethics driven organization that puts people's safety and well-being first. Regardless of your role or where you serve, at HII, you'll find a supportive and welcoming environment, competitive benefits, and valuable educational and training programs for continual career growth at every stage of your career. Together we are working to ensure a future where everyone can be free and thrive.