Type of Requisition:RegularClearance Level Must Currently Possess:Top Secret SCI + PolygraphClearance Level Must Be Able to Obtain:Top Secret SCI + PolygraphPublic Trust/Other Required:NoneJob Family:Cyber and IT Risk ManagementJob Qualifications:Skills:Cloud: Amazon Web Services (AWS), Plan of Action and Milestones (POA&M), RMF, Xacta (Platform)Certifications:NoneExperience:8 + years of related experienceUS Citizenship Required:YesJob Description:Seize your opportunity to make a personal impact as an Information Systems Security Management professional 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 an Information Systems Security Manager (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 IMPACTSupport customer RMF workflow and processes by proposing, coordinating, implementing and enforcing information system security policies, instructions, standards, and methodologiesReview and approve customer requests related to accesses, devices, and other authorizationsEvaluate the impact of network and system changes using RMF processes and approve the changesManage 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&MsEnsure compliance with NIST 800-53 controls and relevant cybersecurity standardsEnsure configuration management for security-relevant IS software, hardware and firmware is maintained and documentedEnsure system recovery processes are monitored to ensure security features and procedures are properly restoredEnsure all IS security-related documentation is current and accessible to properly authorized individualsFormally notify the appropriate individuals when changes occur that might affect authorizationParticipate in governance and project reviews identified by the customerRequire strong documentation skills to create and update policies, process documentation and proceduresConduct internal audits to ensure compliance with RMF requirementsDemonstrated experience with RMF, ICD 503, CNSSI 1253, NIST SP 800-53/53A, and STIGsWHAT 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: CompTIA Advanced Security Practitioner (CASP+)Required Experience: 8+ yrsRequired Technical Skills: Require strong documentation skills to create and update policies, process documentation and proceduresExperience with ServiceNow, Tenable, and other SCAP Compliant toolsDemonstrated experience with RMF, ICD 503, CNSSI 1253, NIST SP 800-53/53A, and STIGsSecurity Clearance Level: TS/SCI with active polygraphPreferred Certifications:Certified Information Systems Security Professional (CISSP)CompTIA Security+Certified Information Systems auditor (CISA)Certified Information Security Manager (CISM) AWS Solutions Architect Associate or ProfessionalLocation: Tysons Corner, VA - On Customer SiteGDIT IS YOUR PLACE:401K with company matchComprehensive health and wellness packagesInternal mobility team dedicated to helping you own your careerProfessional growth opportunities including paid education and certificationsCutting-edge technology you can learn fromRest and recharge with paid vacation and holidays#WeAreGDIT#JET#GDITEnhanced2026#VA_2026AlumniThe likely salary range for this position is $161,500 - $218,500. 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.Scheduled Weekly Hours:40Travel Required:Less than 10%Telecommuting Options:OnsiteWork Location:USA VA McLeanAdditional Work Locations: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, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. Our Identity Verification Process:As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes. About Our Work:We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.Join our Talent Community to stay up to date on our career opportunities and events atgdit.com/tc.Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans