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

Company: GD Information Technology
Location: Herndon
Posted on: April 1, 2026

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: Information Security, Information Technology Security, System Security Plans Certifications: None Experience: 8 years of related experience US Citizenship Required: Yes Job Description: Own the opportunity as an Information Systems Security Officer (ISSO) and help ensure the mission is never interrupted. At GDIT, we deliver clarity with our cloud solutions and provide meaningful work. Your work will be an important part of transforming our clients for the modern age and help them face any obstacle Ensure the safety and security of our nation as a Software Developer at GDIT. You’ll apply the latest technology and provide operational support to deliver actionable intelligence for the Intelligence Community. Here, your work will have meaning and impact as you deliver your best every day. At GDIT, people are our differentiator. As an ISSO supporting the customer, you will be trusted to solve complex IT issues while delivering outstanding customer service. HOW THE ISSO WILL MAKE AN IMPACT Work in close collaboration with a small team of ISSOs and ISSE to support the customers critical systems Ensure systems are operated, maintained, and disposed of in accordance with security policies and procedures as outlined in the security authorization package Conduct periodic reviews of Information Systems to ensure compliance with the security authorization package Coordinate with systems administrators to perform system scans for A&A and continuous monitoring to include but not limited to network devices, servers, databases, and web services Perform compliance audits, participate in incident handling, and lead or assist investigations into security anomalies Perform review of audit logs and continuous monitoring tools for IT systems to identify anomalies, hacking or insider threats WHAT YOU’LL NEED TO SUCCEED: Education : BA/BS (or equivalent experience) Required Experience : 8 years of relevant experience Required Technical Skills: ICD-503, FISMA, RMF, NIST, FIPS, CNSSI 1253, Nessus, A&A, Strong Engineering Experience Required Skills and Abilities: Demonstrated on-the-job knowledge experience with reviewing security concepts of operations, systems security plans, security control assessments, contingency plans, configuration management plans, incident response plans, vulnerability scanning, and/or vulnerability management plans Security Clearance Level : TS/SCI w/ Polygraph Location: Herndon, VA - 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 OpportunityOwned GDITCareers WeAreGDIT JET VA_2026Alumni GDITEnhanced2026 The likely salary range for this position is $158,950 - $215,050. 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. Scheduled Weekly Hours: 40 Travel Required: Less than 10% T elecommuting Options: Onsite Work Location: USA VA Herndon 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. 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. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology. Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc . Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Keywords: GD Information Technology, Ellicott City , Information Systems Security Officer (ISSO) - TS/SCI with Polygraph, IT / Software / Systems , Herndon, Maryland