Information System Security Officer (ISSO) - TS/SCI with Polygraph

General Dynamics Information Technology, Inc.; McLean (VA); On-site; USD 143,000 - 162,000; Full time

Job summary

General Dynamics Information Technology, Inc. is seeking an Information Systems Security Officer (ISSO) to support customer activities on-site at McLean, VA.

The role focuses on risk management, security documentation, and maintaining a robust security posture across cloud and on-premises environments. The ideal candidate holds a TS/SCI with polygraph, 8+ years of related experience, and a strong knowledge of RMF, NIST 800-53/800-37, AWS infrastructure, and cloud security.

Qualifications

• 8+ years of related experience.
• Bachelors in computer engineering, computer science, electrical engineering, information systems/IT, cybersecurity or related discipline.

Responsibilities

• Provide information assurance support to system(s) and program.
• Coordinate and implement cybersecurity policies, standards and processes.
• Maintain operational security posture for system(s) following RMF procedures.
• Evaluate security solutions meeting requirements for processing classified information.
• Prepare and review SSPs, C&A packages, architecture diagrams and contingency/incident response plans.

Skills

AWS

Cybersecurity

POA&M

RMF

NIST 800-53

NIST 800-37

CNSSI 1253

Education

Bachelor's degree in related discipline

Job description

Type of Requisition

Regular Clearance Level Must Currently Possess: Top Secret SCI + PolygraphClearance Level Must Be Able to Obtain: Top Secret SCI + PolygraphPublic Trust/Other Required: NoneJob Family: Cyber and IT Risk ManagementJob Qualifications: Skills: Amazon Web Services (AWS), Cybersecurity, Plan of Action and Milestones (POA&M), Risk Management FrameworkCertifications: NoneExperience: 8 + years of related experienceUS Citizenship Required: Yes

Job Description

Seize your opportunity to make a personal impact as an Information Systems Security Officer supporting customer activities. GDIT is your place to make meaningful contributions to challenging projects and grow a rewarding career. At GDIT, people are our differentiator. As an ISSO, you will help ensure today is safe and tomorrow is smarter. Our work depends on an ISSO joining our highly skilled team to be a premier provider of cyber security services to the customer. We provide consummate cyber security risk management “as a service” platform across multiple fabrics and centers. We have responsibility to ensure operational IT capabilities provide the client with necessary timeliness, accuracy and security of information demanded from all our highly professional roles. Be the change, lead our change – join us!

• Provide information assurance support to system(s) and program
• Demonstrated experience with coordinating and implementing cyber security policies, standards and processes
• Maintain operational security posture for system(s) through customized Risk Management Framework (RMF) to ensure established security processes and procedures are followed
• Strong knowledge of AWS infrastructure, Commercial cloud and cloud security
• Evaluate security solutions to ensure security requirements are met for processing classified information
• Provide configuration management and documentation for system software, hardware, networks, enclaves, etc.
• Prepare and review system documentation to include Systems Security Plans (SSPs), Certification and Accreditation (C&A) packages, architecture diagrams, contingency plan, incident response plan, and other documentation
• Support programmatic and organization project and risk management review boards
• Perform vulnerability scanning, risk assessment analysis using NIST 800-53 and prepare responses to Plan of Action and Milestones (POA&Ms)
• Understanding of NIST 800-53, NIST 800-37, RMF, ICD 503, CNSSI 1253
• Strong written and oral communication skills to write technical analysis reports and security plans

What you'll need to succeed

Education

Bachelors (Computer engineering, Computer Science, Electrical Engineering, Information systems, Information Technology, Cybersecurity, or a closely related discipline)

Required Experience

8+ yrs

Preferred Technical Skills

• Demonstrated experience with coordinating and implementing cyber security policies, standards and processes
• Strong knowledge of AWS infrastructure, Commercial cloud and cloud security
• Understanding of NIST 800-53, NIST 800-37, RMF, ICD 503, CNSSI 1253
• Strong written and oral communication skills to write technical analysis reports and security plans

Security Clearance Level

TS/SCI with active polygraph

Preferred Certifications

• CompTIA Security+
• CISSP
• CISM
• CEH
• AWS Certified Cloud Practitioner (CCP)
• Microsoft Azure
• Google Cloud Platform (GCP)

Location: McLean, VA - On Customer Site

Scheduled Weekly Hours: 40

Travel Required: Less than 10%

Telecommuting Options: Onsite Work Location: USA VA McLean

Additional Work Locations: Total Rewards at GDIT: Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match.

Benefits

• Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match.
• To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave.
• To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available.

GDIT IS YOUR PLACE

• 401K with company match
• Comprehensive health and wellness packages
• Internal mobility team dedicated to helping you own your career
• Professional growth opportunities including paid education and certifications
• Cutting-edge technology you can learn from
• Rest and recharge with paid vacation and holidays #OpportunityOwned #GDITCareers #WeAreGDIT #JET #GDITEnhanced2026 #VA_2026Alumni

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans Opportunity Owned

From working with technologies like AI, cyber and cloud to careers in intelligence and health, we offer endless opportunities to apply your expertise to create a safer, smarter world.

For more information about GDIT's Privacy Policy, click here: Privacy Policy | GDIT

Salary Information

The likely salary range for this position is $142,792 - $161,788. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.