Cyber Security - ISSM (Active TS/SCI/Poly Required)

Clearance Level
Top Secret SCI + Polygraph
Cyber Security
Herndon, Virginia

REQ#: RQ133448

Travel Required: None
Requisition Type: Regular

At GDIT, people are our differentiator. As an ISSM, you will help ensure today is safe and tomorrow is smarter. Our work depends on an ISSM joining our team to provide support to large scale, enterprise systems. You will have an impact by participating in forums, communicate regularly with multiple offices within the Customer’s purview, and be expected to lead, manage, collaborate, and ultimately assist with cyber security risk assessments of Customer’s systems.


  • Review and approve security plans for IT projects by keeping up with new technologies and capabilities such as AWS/C2S, encryption, transport, and networking
  • Support the development or modification of System Security Plans (SSPs), security requirements, and other supporting documentation for the Assessment and Authorizations process
  • Review assessment reports and assist projects in identifying security risks and developing mitigation strategies such as Plans of Action and Milestones (PoAMs)
  • Ensure the project completes mitigation strategies as scheduled
  • Provide security review and approval for changes to accredited systems and determination of Security Relevant Changes
  • Provide feedback for Customer computer incident team to resolve cyber incidents


  • Education: Bachelor’s in computer science, cyber security, information assurance, computer engineering.  Certified Information Systems Security Professional (CISSP)
  • Experience: Authorization and Accreditation (A&A) process, Customer’s diverse information technology infrastructure, Customer’s cloud computing environments
  • Technical skills: AWS/C2S, Containers, encryption technologies, operating systems, database technologies, networking, routing, switching, firewalls, and data protection. Cloud computing, virtual machine technology, serverless technology, S3 storage. Cyber risks, exploits, vulnerabilities and associated mitigations.
  • Security clearance level: TS/SCI/Polygraph
  • Location: On Customer Site


  • 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





About Our Work

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

COVID-19 Vaccination

GDIT does not have a vaccination mandate applicable to all employees. To protect the health and safety of its employees and to comply with customer requirements, however, GDIT may require employees in certain positions to be fully vaccinated against COVID-19. Vaccination requirements will depend on the status of the federal contractor mandate and customer site requirements.

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.