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Information Systems Security Engineer – TS​/SCI

Job in Reston, Fairfax County, Virginia, 22090, USA
Listing for: General Dynamics Information Technology
Full Time position
Listed on 2026-02-09
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security
Salary/Wage Range or Industry Benchmark: 170000 - 230000 USD Yearly USD 170000.00 230000.00 YEAR
Job Description & How to Apply Below
Position: Information Systems Security Engineer – TS/SCI required

Type of Requisition

Pipeline

Clearance Level Must Currently Possess

Top Secret/SCI

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: Cybersecurity, Information System Security, RMF, System Implementations, System Security

Certifications: None

Experience: 10 + years of related experience

US Citizenship

Required:

Yes

Job Description

Transform technology into opportunity as an Information System Security Engineer (ISSE) with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you’ll be at the forefront of innovation and play a meaningful part in improving how agencies operate.

At GDIT, people are our differentiator. As an ISSE, you will help ensure today is safe and tomorrow is smarter.

HOW A ISSE WILL MAKE AN IMPACT

  • Responsible for supporting Engineering and Operations network solutions and strategic adherence to all aspects of the Information Assurance (IA) program as stipulated by various U.S. Government requirements including (but not limited to):
    Director of Central Intelligence Directives (DCID), IC Directive (ICD) 503 and associated NIST publications.
  • Preparation of Assessment and Authorization (A&A) documents and procedures. Interface with other IA team members, other security disciplines (industrial security, physical security, special programs security, etc.), program personnel, and Government security representatives.
  • Assists ISSO guiding the SDP program thru RMF process expediting control implementation/policy creation to achieve/maintain 3-year ATO
  • Maintains system eMASS records, uploads artifacts, updates security controls, and initiates workflow for steps in RMF process.
  • Validate weekly patching complete and scans results reviewed.
  • Ensure STIG Compliance SOP is sustained on testing guidance for SDP teams
  • Reviews and analyze system implementation plans.
  • Identified corrective actions/mitigation strategies to achieve/sustain RMF compliance.
  • Validates STIG development/implementation. Ensure all STIGS/scans sustained IAW SOP.Includesvalidation and Issue Trakmonitoring
  • Develop/maintain Plans of Action & Milestones (POA&M) which account for confidentiality, integrity, and availability.
  • experience with the Xacta application.alidate all Assessment Procedures (i.e. security controls) test results reported with proper justification.
  • Validate Reported False Positives .IfACASfindings, create ticket, notify ACAS team, andcoordinatetosubmitticket.
What You’ll Need to Succeed
  • Education: Bachelor of Science Degree, or a related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience. Minimum 10 years of cyber/information assurance experience.
  • Preferred Skillset/

    Experience:

    • Progressively responsible information assurance experience in ICD 503 certification and accreditation.
    • Experience with NIST Special Publication 800-37 Revision 1, Guide for Applying the Risk Management Framework to Federal Information Systems, CNSSI 1253, and NIST SP 800-53 Revisions 3 and 4, SP800-39, SP 800-30.
    • Demonstrated experience in transitioning applications to IC Information Technology Environment (ITE) and in-depth knowledge of IC ITE services.
    • Experience with the Xacta application.
    • Strong written and oral communication skills.
    • Ability to multi-task and shift with changing priorities and projects.
  • Clearance Level: TS/SCI
  • Required Certification(s):
    • Candidate must meet DoD 8570 for ISSE Role: CISM, CISSO, FITSP-M, GCIA, GCSA, GCIH, GSLC, GICSP, CISSP-ISSMP or CISSP.
  • Additional
    :
    • Candidates must be willing and able to attain a CI Polygraph.
GDIT Perks

GDIT IS YOUR PLACE:
Full-flex work week to own your priorities at work and at home, 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.

The likely salary range for this position is $170,000 - $230,000. 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.

Other Details

Scheduled Weekly

Hours:

40

Travel Required: None

Telecommuting Options: Onsite

Work Location: USA MD Annapolis Junction

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,…

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