Senior Information System Security Officer (ISSO)

General Dynamics Information Technology; Fort Belvoir (VA); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Growth opportunities

Internal mobility

Comprehensive benefits

Competitive pay & PTO

Job summary

General Dynamics Information Technology seeks an experienced Information System Security Officer (ISSO) to support the Defense Threat Reduction Agency, ensuring RMF compliance across DSMS components such as DIAMONDS, JADE, and NIMACS in line with DoD directives.

This on-site, full-time role at Fort Belvoir, VA requires TS/SCI clearance, strong collaboration with government staff, and hands-on risk management, STIG reviews, and RMF activities to safeguard networks and systems.

Qualifications

• BA/BS or the equivalent combination of education, technical training, or work/military experience.
• 5+ years of IT experience with at least 5+ years ISSO experience.
• Must have working knowledge of RMF (DoW RMF).
• Must meet DoW 8750 requirements and be eligible for IAM level II.
• Required clearance: active Top Secret/SCI (TS/SCI).
• Ability to work in a team-oriented, collaborative environment.

Responsibilities

• Performs Cybersecurity activities for a large Program; coordinates with government staff and agencies to aid policy, standards, and procedures.
• Support development and staffing of documentation related to ATO/ATC/IATT/POA&Ms.
• Assist in the development and execution of ST&E plans.
• Provide RMF-related risk analysis, architecture reviews, and security posture reviews.
• Provide security design management for build processes of servers and endpoints.
• Ensure cybersecurity and vulnerability management practices are developed, implemented, and enforced.
• Conduct network/system audits for vulnerabilities using STIGs, DISA SCAP, and related tools.
• Coordinate POA&M tracking, risk acceptances, and remediation actions.
• Communicate threat intelligence to leadership to support cyber risk decisions.
• Perform RMF activities under DoW 8510 and coordinate audits and inspections.
• Evaluate change requests and assess organizational risk.
• Ensure integrity and protection of networks, systems, and applications.

Skills

ISSO experience

RMF knowledge

Security clearance TS/SCI

Verbal & written communication

Teamwork

Organizational skills

Education

BA/BS or equivalent

Job description

General Dynamics Information Technology (GDIT) seeks a highly motivated and experiencedInformation System Security Officer (ISSO) supporting the Defense Threat Reduction Agency (DTRA). You will be the designated cybersecurity professional responsible for the Defense Stockpile Management Systems (DSMS) which includes: Defense Integration and Management of Nuclear Data Services (DIAMONDS), Joint Application Design Environment (JADE), Nuclear Inventory Management and Cataloging System (NIMACS). The ISSO ensures all systems comply with theNIST Risk Management Framework (RMF), DoD directives, and agency-specific security mandates.

WHAT YOU WILL DO:

• Performs Cybersecurity activities for a large Program; coordinates with government Program staff, DTRA, and other government agencies to assist in the creation, dissemination, direction, and auditing of program policy, standards, and operating procedures.

• Support the government ISSMs in the development and staffing of documentation related to the Authorization to Operate (ATO), Authorization to Connect (ATC), Interim Authorization to Test (IATT), Plans of Action & Milestones (POA&Ms), etc.

• Assist in the development and execution of any required Security Test and Evaluation (ST&E) plans.

• Provide USG with a review of architecture documentation, security impact analysis, and risk mitigation/acceptance to support RMF for DoW IT authorization.

• Provide security design management control of build processes for servers, services, and end points.

• Ensure good cybersecurity and vulnerability management practices are developed, implemented, and enforced.

• Conduct network and system audits for vulnerabilities using Security Technical Implementation Guides (STIGs), DISA SCAP, ACAS vulnerability scanner, ESS Policy Auditor to mitigate those findings for Linux, Windows, Cisco, Juniper, VMWare and other associated operating systems and technologies.

• Implement the Continuous Monitoring program by creating, tracking, reviewing, and closing Plan of Action and Milestones (POA&Ms) and Risk Acceptances and assist in conducting solution identification to assist in problem remediation and resolution.

• Communicate tactical and strategic threat information to Government leaders, Cybersecurity-Ops and Security Staff to assist them in making cyber risk decisions and to mitigate threats.

• Carries out DoW Risk Management Framework (RMF) in accordance with DoW 8510 to ascertain information systems' security posture by utilizing security control validation activities and coordinating security testing.

• Coordinates with DTRA and other organizations in support of audits and inspections and provides all necessary documentation as required for SAVs, ST&Es, and CCRI

• Evaluate change requests (firewall, systems, networks) and assess organizational risk.

• Ensures the integrity and protection of networks, systems, and applications by technical enforcement of organizational security policies, through monitoring of vulnerability scanning devices.

• Provides guidance and work leadership to less-experienced technical staff members.

• Maintains current knowledge of relevant technology as assigned.

• Process tickets in support of the program using the accepted ITSM system.

WHAT YOU WILL NEED:

• BA/BS or the equivalent combination of education, technical training, or work/military experience.

• 5+ years of IT experience with at least 5+ years ISSO experience.

• Must have working knowledge of DOW Risk Management Framework (RMF)

• Must meet DOW 8750 requirements and be eligible for IAM level II

• Required clearance: must have an active/current Top Secret/SCI (TS/SCI) Security Clearance.

• Ability to work in a team-oriented, collaborative environment.

• Ability to work efficiently in a fast-paced environment and multi-task while still ensuring high quality of work.

• Highly organized with strong ability to prioritize work and work autonomously.

• Excellent verbal and written communication skills

• Great attention to detail and presentation

• Results driven, highly efficient, energetic, and highly motivated.

• Must possess a high degree of intelligence, competence, maturity, adaptability, resilience, integrity, and initiative.

• The work is typically performed at client site locations, which requires proper safety precautions; work may require some physical effort in the handling of light materials, boxes, or equipment.

• Work location is on site at Fort Belvoir, VA. Not a remote or hybrid role and must be able to work on site 5 days a week.

WHAT GDIT CAN OFFER:
At GDIT, the mission is our purpose, and our people are at the center of everything we do.

• Growth: AI-powered career tool that identifies career steps and learning opportunities

• Support: An internal mobility team focused on helping you achieve your career goals

• Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off

• Community: Award-winning culture of innovation and a military-friendly workplace

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#GDITPRIORITY