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

General Dynamics IT; McLean (VA); On-site; USD 143,000 - 162,000; Full time

Benefits offered by this job

401K with company match

Health and wellness packages

Internal mobility team

Education and certifications support

Paid vacation and holidays

Job summary

General Dynamics IT in McLean, VA seeks an Information Systems Security Officer (ISSO) to support customer activities with a Top Secret/SCI+Poly clearance. The role focuses on ensuring information security across systems, coordinating RMF, and implementing cyber security policies.

In this position you will prepare security documentation, maintain security posture, and collaborate with cross-functional teams on risk management and incident response planning.

Qualifications

• 8+ years of related experience.
• Bachelor's degree in Computer Engineering, Computer Science, Electrical Engineering, Information Systems, Information Technology, Cybersecurity, or closely related discipline.
• US Citizenship required; Top Secret/SI with Polygraph clearance preferred (or required).

Responsibilities

• Provide information assurance support to system(s) and program.
• Coordinate and implement cyber security policies, standards, and processes.
• Maintain RMF-based security posture and ensure established procedures are followed.
• Possess strong knowledge of AWS infrastructure, cloud security, and RI/SI controls.
• Prepare and review System Security Plans (SSPs) and Certification & Accreditation (C&A) docs.
• Support risk management reviews and incident response planning.

Skills

AWS

Cybersecurity

POA&M

RMF

Education

Bachelor's degree (CE/CS/EE/Information Systems/IT/Cybersecurity)

Job description

Type of Requisition: Regular

Clearance Level Must Currently Possess: Top Secret SCI + Polygraph

Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph

Public Trust/Other Required: None

Job Family: Cyber and IT Risk Management

Job Qualifications

Skills: Amazon Web Services (AWS), Cybersecurity, Plan of Action and Milestones (POA&M), Risk Management Framework

Certifications: None

Experience: 8 + years of related experience

US 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!

HOW AN ISSO WILL MAKE AN IMPACT

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+
• Certified Information System Security Processional (CISSP)
• Certified Information Security Manager (CISM)
• Certified Ethical Hacker (CEH)
• AWS Certified Cloud Practitioner (CCP)
• Microsoft Azure
• Google Cloud Platform (GCP)

Location

McLean, VA - On Customer Site

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

Salary

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.

Schedule and Travel

Scheduled Weekly Hours: 40

Travel Required: Less than 10%

T elecommuting Options: Onsite

Work Location

USA VA McLean

Hashtags

#OpportunityOwned

#GDITCareers

#WeAreGDIT

#JET

#GDITEnhanced2026

#VA_2026Alumni

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. 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 t