Information Systems Security Manager (ISSM) - TS/SCI w/Polygraph

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 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!

HOW AN ISSM WILL MAKE AN IMPACT

• Support customer RMF workflow and processes by proposing, coordinating, implementing and enforcing information system security policies, instructions, standards, and methodologies

• Review and approve customer requests related to accesses, devices, and other authorizations

• Maintain current system information in ServiceNow to support organizational requirements and processes Evaluate the impact of network and system changes using RMF processes and approve the changes

• Manage multiple projects throughout Authorization and Accreditation (A&A) process from concept to Authority to Operate (ATO)

• Coordinate with system stakeholders on mitigating system vulnerabilities outlined in POA&Ms

• Submit recommendations to stakeholders for system configuration deviations from the required baseline

• Conduct periodic reviews to ensure compliance with SSP

• Ensure configuration management for security-relevant IS software, hardware and firmware is maintained and documented

• Ensure system recovery processes are monitored to ensure security features and procedures are properly restored

• Ensure all IS security-related documentation is current and accessible to properly authorized individuals

• Formally notify the appropriate individuals when changes occur that might affect authorization

• Participate in governance and project reviews identified by the customer

WHAT YOU’LL NEED TO SUCCEED:

• Education: Bachelors (Computer engineering, Computer Science, Electrical Engineering, Information systems, Information Technology, Cybersecurity, or a closely related discipline)

• Required Certification: Security+

• Required Experience: 4+ yrs

• Required Technical Skills:

• Demonstrated experience with RMF, ICD 503, CNSSI 1253, NIST SP 800-53/53A, and STIGs

• Experience with ServiceNow, Tenable, and other SCAP Compliant tools

• Require strong documentation skills to create and update policies, process documentation and procedures

• Security Clearance Level: TS/SCI with active polygraph

• Desired Certifications:

• Certified Ethical Hacker 10 (CEH)

• Certified Information Systems Security Professional (CISSP)

• Certified Information Systems auditor (CISA)

• NIST Cybersecurity Framework (NCSF)

• AWS Solutions Architect Associate or Professional

• Location: McLean, VA - On Customer Site

GDIT IS YOUR PLACE:

• 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

#WeAreGDIT
#JET
#GDITEnhanced2026
#VA_2026Alumni