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

Clearance Level
Top Secret SCI + Polygraph
Information Security
Chantilly, Virginia
Onsite Workplace
Key Skills For Success

Continuous Monitoring

Host Based Security System (HBSS)

Information System Security

REQ#: RQ174025
Requisition Type: Regular
Your Impact

Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats.

Job Description

This ISSO position is an entry to mid-level information system security professional providing support to all contract service teams for daily duties involving system compliance validation, vulnerability management response coordination, data transfer (Low to High and High to Low),
and ongoing audit review and correlation, as well as general support to ongoing continuous monitoring activities.

The successful candidate will possess and be able to apply knowledge and experience with standard information system security concepts, practices, and procedures with the following focus areas:

  • Thorough understanding and application of network security principles, practices, and implementations;
  • Working knowledge of cross-functional integration of information systems into a physical security environment;
  • Working knowledge of system functions, security policies, technical security safeguards, and operational security measures;
  • Understanding of system methodologies including but not limited to client server, web hosting, web content servers, policy servers, directory servers, firewalls, WAN, LAN, switches, and routers;
  • Familiarity with detecting and preventing computer security compromises in a networked environment;
  • Proficient in the use of tools used to prevent and/or negate malicious code (e.g HBSS, Anti Malware, ACAS);
  • Understanding of COTS tools that scan at the physical layer of all removable and fixed media types including but not limited to: (CDs, hard drives, thumb drives, etc.);
  • Ability to apply a risk management philosophy when faced with security challenges and the ability to articulate the pro’s and con’s in a clear concise manner;
  • Demonstrated proficiency with the following computer operating systems (e.g. Microsoft Windows, LINUX, UNIX, Mac OS, etc.);
  • Strong ability to elicit, articulate, and document information in a well-organized manner;
  • Demonstrated experience with Microsoft Office Suite;
  • Working knowledge of applicable Customer, IC, DoD policies, procedures and operating instructions related to Information Technology, Information Assurance, Information Management (IT/IA/IM);
  • Excellent communication, interpersonal, and team-building skills to engender rapport with the military personnel, civilians, and other contractors at all levels;
  • Demonstrated ability to correlate audit results between various systems and/or users and notify the ISSM of any discrepancies.

Candidate should have a minimum of 3 years of relevant experience with at least an associate’s degree in a related field of study.

Candidate must also have a valid and current 8570 IAT Level II compliant certification (CCNA-Security / CSA+ / GICSIP / GSEC / Security+CE / SSCP)

A good understanding and some experience with cloud implementations (Azure or AWS) is preferred.

Location: On Customer Site

US Citizenship Required

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
Work Requirements
Years of Experience

3 + years of related experience

* may vary based on technical training, certification(s), or degree


Travel Required



U.S. Citizenship Required

Salary and Benefit Information

The likely salary range for this position is $75,582 - $102,258. 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.
View information about benefits and our total rewards program.

About Our Work

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 30 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.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.