ISSM / Information Systems Security Manager ( Active Polygraph required)

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

REQ#: RQ101244

Travel Required: Less than 10%
Requisition Type: Regular

We are GDIT. We support and secure some of the most complex government, defense, and intelligence projects across the country.

GDIT is your place. You make it your own by bringing your ideas and unique perspective to our culture. By owning your opportunity at GDIT, you are helping us ensure today is safe and tomorrow is smarter. Our work depends on a ISSM joining our team to support restricted customer activities at Herndon, VA.

This ISSM role is for a customer system to support the development, enhancements, features, and maintain security accreditation for turnover to O&M status. Heres some of what this Web Developer/ISSM will do during a typical day:

  • Provide application support to the customer system portal providing software development until O&M ready and security accreditation is complete
  • Define requirements (chief for system, component ISSM for security, C2S for system hosting). This includes validating requirements and user acceptance criteria
  • Schedule/coordinate software release testing
  • Communicate with internal customer management as it pertains to outages, releases and issues
  • Complete system security accreditation (A&A) for ATO
  • Knowledge or experience with the XACTA 360 application and process for security accreditation or willing to complete customer training
  • Schedule/perform weekly single audit layer audits to support the security ATO process
  • Monitor system performance in C2S and submit support requests as required
  • Schedule/submit system scan requirements for cyber assessment every 120 days in support of security ATO process
  • Ensure continuity of accesses between developers: privileged access - provide systems admin. backup (as required). Must obtain and maintain privileged user credentials
  • Support system migration from Linux SLIM to CLSE.


  • Bachelors
  • 10+ Years of relevant experience
  • Technical skills
  • TS/SCI with Poly


  • Full-flex work week
  • 401K with company match
  • Internal mobility team dedicated to helping you own your career
  • Collaborative teams of highly motivated critical thinkers and innovators
  • Ability to make a real impact on the world around you

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This position requires being fully vaccinated against COVID-19 by December 8, 2021 or the start date, if after December 8.

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.

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.