Information Systems Security Engineer (Active Polygraph Required)

Clearance Level
Top Secret SCI + Polygraph
Cyber Engineering
McLean, Virginia

REQ#: RQ138271

Travel Required: Less than 10%
Public Trust: None
Requisition Type: Regular

Seize your opportunity to make a personal impact as an Information Systems Security Engineer 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 a Information Systems Security Engineer (ISSE)​, you will help ensure today is safe and tomorrow is smarter. Our work depends on an ISSE 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!


  • Ensure security policies and procedures are implemented
  • Create and maintain system BOE documents to include SSPs, architecture diagrams, contingency planning, and continuous monitoring documentation
  • Write and modify documents to include SOPs, processes, and other guidance documentation


  • 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:
  • Experience with gaining an ATO for systems and working the systems through the assessment and authorization process
  • Experience with vulnerability scanning tools to include Nessus, AppDetective, WebInspect and other vulnerability scanning tools
  • Strong understanding of RMF, CNSSI 1253, NIST 800-53, NISPOM
  • Experience with JIRA and requirements management
  • Experience with cloud security
  • Security Clearance Level: TS/SCI with active polygraph
  • Desired Certifications:
  • Security Certifications: CISSP, CISM, CISA, CEH, NCSF,CAP
  • Location: McLean, VA - 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.