IS Security Engineer (ISSE), TS/SCI with Polygraph

Public Trust: None

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

Information Systems Security Engineer (ISSE)

We are seeking an experienced Information Systems Security Engineer (ISSE) to support Assessment and Authorization (A&A) and Continuous Monitoring (ConMon) activities, ensuring compliance with Risk Management Framework (RMF) requirements across multi-level classification environments with diverse technologies.

Key Responsibilities

The ISSE will play a critical role in maintaining system security by tracking and executing RMF actions in accordance with ICD 503 (NIST 800-53) to obtain and sustain system authorizations. Responsibilities include:

• Assessment & Authorization (A&A):
  • Preparing and submitting Interim Authorization to Test (IATT) and Authority to Operate (ATO) requests with Plans of Action and Milestones (PoAMs)
  • Developing, maintaining, and coordinating required Body of Evidence (BoE) documentation for system assets
  • Collaborating across Technical Services and Security Services teams, as well as customer agency stakeholders, to ensure compliance
  • Tracking workflow for lien remediation/resolution activities and entering tracking tool updates
  • Evaluating system change requests and assessing both system and organizational risks associated with modifications
• Continuous Monitoring (ConMon):
  • Executing ConMon activities within established timelines, including BoE collection and tracking tool updates
  • Conducting recurring reviews of system state and security posture to ensure that systems are being operated securely, and information systems security policies and procedures are being implemented as defined.
  • Providing recommendations for security control implementation and identifying necessary countermeasures or mitigating controls
  • Responding to queries and requests for security information and reports
• Incident Response & Security Oversight:
  • Supporting investigations of security incidents and reporting findings as necessary
  • Assisting in the communication, implementation and enforcement of security policies and plans for data, applications, hardware, and telecommunications systems
  • Advising stakeholders on information assurance standards, dependencies, and emerging security technologies
  • Engaging with Enterprise Security Services tools (e.g., Trellix, ACAS, Splunk) to track and remediate vulnerabilities and compliance deficiencies

Required Qualifications

• Education: Bachelor’s degree in Information Systems, Cybersecurity, or a related field (or equivalent experience)
• Experience: Minimum of 8 years of applicable experience in cybersecurity, RMF compliance, or system security engineering
• Certifications:
  • Required: DoD 8570 IAM Level I certification ( CAP, CND, Cloud+, GSLC, Security+ CE, or HCISPP ) – must be active and valid
  • Preferred: IAM Level II certification ( CAP, CASP+ CE, CISM, CISSP (or Associate), GSLC, CCISO, or HCISPP )
• Preferred Skills:
  • Experience with cloud security implementations in Azure or AWS
  • Strong understanding of security policies, risk management, and vulnerability assessment tools

Why Join GDIT?

At GDIT, we foster professional growth and provide opportunities to advance your career in a mission-critical environment. Our benefits include:

• 401(k) with company match
• Comprehensive health and wellness programs
• Dedicated internal mobility team to support career advancement
• Paid education and professional certification opportunities
• Access to cutting-edge technologies and innovative projects
• Paid vacation and holidays to support work-life balance

Join us at GDIT and contribute to securing the future of national security.

#Autobots

Work Requirements

Years of Experience

8 + years of related experience

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

Certification

Travel Required

None

Citizenship

U.S. Citizenship Required