Mantech seeks a motivated, career driven, and customer-focused Information System Security Officer to join our team in Columbia, MD.You will play a critical role in supporting enterprise infrastructure capabilities for a global, mission-focused workforce.As an ISSO, you will work alongside customers, Integrated Product Teams (IPTs), and vendors to support the implementation and compliance of advanced EIT capabilities through Data Center & Compute Services. You will manage cybersecurity documentation, assess system vulnerabilities, and support the Risk Management Framework (RMF) lifecycle in alignment with Sponsor policies.Responsibilities include, but are not limited to:Update and maintain hardware and software inventory records, including associated change logsSupport and coordinate Secure the Enterprise (STE) and Secure the Network (STN) activitiesReview and address Xacta notices and ensure compliance documentation is accurate and currentComplete SEAR audit log records in accordance with Sponsor standardsTrack, review, and resolve POAMs (Plan of Action and Milestones) related to IAVA/IAVAx findingsDevelop and maintain System Security Plans (SSPs) for both new and existing systemsAnalyze vulnerability scan results and collaborate with system owners to implement remediationLeverage sponsor tools such as Gatekeeper, Xacta, SEAR, and LatteArt in daily operationsMinimum Qualifications:Bachelor’s degree with 12+ years of relevant experience OR associate’s degree with 15 years of relevant experience OR high school diploma/GED with 20 years of relevant experienceExperience with Xacta, LatteArt and other sponsor toolsExperience managing POAMs, performing audit log reviews, and maintaining secure system inventoriesIAM I certification (DoD 8140 required upon start of employment. Acceptable certifications include CAP/CND/Cloud+/GSLC/Security + CE/HCISSP/CASP+CE/CISM/CISSP/ or CCISO)Preferred Qualifications:Knowledge of STE and STN processes and coordinationExperience with Gatekeeper, SEAR, SCANBOYExperience with the Service Now (SNOW) platformClearance Requirements:Must possess and maintain a current/active TS/SCI clearance with PolygraphPhysical Requirements:Must be able to remain in a stationary position 50% of the timeOccasionally moves about inside the office to access file cabinets, office machinery, etc.Frequently communicates with co-workers, management, and customers, including delivering presentations. Must be able to exchange accurate information in these situations

Type of Requisition:RegularClearance Level Must Currently Possess:Top Secret/SCIClearance Level Must Be Able to Obtain:Top Secret/SCIPublic Trust/Other Required:NoneJob Family:SecurityJob Qualifications:Skills:Access Control (AC), Accountability, Facility SecurityCertifications:NoneExperience:5 + years of related experienceUS Citizenship Required:YesJob Description:Transform technology into opportunity as a Activity Security Representative (ASR) Ill 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 a Activity Security Representative (ASR) Ill you will help ensure today is safe and tomorrow is smarter. The Activity Security Representative’s primary function is to provide multi-disciplined security support to a customer’s facility and organization. The position will provide “day-to-day” support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities.HOW A Activity Security Representative (ASR) Ill WILL MAKE AN IMPACTClassification reviews of inbound and outbound correspondenceAssist in the maintenance of a document accountability database and associated correspondenceProcessing inbound and outbound classified mail and receipt recordsPerform destruction of classified materialsProcess magnetic media for accountabilityReproduction support for classified materialsMaintain various daily logs for a variety of administrative functions associated with document controlAssist in the processing of inbound data and outbound data transfer filesTransfer electronic data files to internal customersMaintain an extensive customer database point of contact listingAssist with researching, processing, filing, and maintaining inbound and outbound visit noticesEscort facility visitors and maintains associated logsAssist in the preparation of facility access control badgesConduct entry and exit inspectionsAssist in the maintenance of facility access control entry systems, to include visitor controlPerform data entry to the Personnel Access Security System database and maintain all customer sponsored billets and quota informationAssist in maintaining personnel security files for all personnel of the supported elementFollow and enforce the customer’s Standard Operating ProceduresProvide support for the security awareness and education programsPerform miscellaneous administrative support functions as directed by the contractor site lead and/or the Senior Security RepresentativeReview, track, and monitor security clearance processing activities with appropriate government personnel to achieve appropriate clearance actionsParticipate in Air Force SAP security compliance inspections of government organizations and industryImplement Top Secret Control for accountable material and associated correspondencePrepare and/or process inbound and outbound classified mail, faxes, courier packages and receiptsPrepare, process, and/or review Program Access Request (PARs) for accuracy and access eligibilityExecute Special Access Program Nomination Process QuestionnairesConduct Defense Central Index of Investigations (DCII), Joint Personnel Access System (JPAS), and SAPNP reviews of candidates being submitted for SAP accessPerform data entry and record checks in the Air Force Access Data System (AFADS) and maintains all customer sponsored personnel access information currentPerform indoctrinationsProvide leadership, mentoring, and quality assurance for Team MembersOther Requirements:Must be familiar with security policy/manuals and the appropriate DCIDs/JAFANs and other guiding policy documents.Must have the ability to work in a dynamic environment and effectively interact with numerous DOD, military/civilian personnel and industry partnersWorking knowledge of Microsoft Office (Word, PowerPoint, and Excel)Possess a high degree of originality, creativity, initiative requiring minimal supervisionWillingness to travel within the organizational geographic Area of Responsibility (AOR) (note - could be extensive, and will include both air and ground transportation)WHAT YOU’LL NEED TO SUCCEED:Education: Bachelor’s degree (Desired) Bachelor’s degree counts as four years of experience, Associate’s degree in related area counts as two years of experience.Required Experience: 5+ years related experienceSecurity Clearance Level:Current Top Secret Clearance with SCI EligibilityEligibility for access to Special Access Program InformationWillingness to submit to a Counterintelligence polygraphGDIT 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#Defense #AFSAPopportunities #Washington #DCjobs #kmp #ASR2The likely salary range for this position is $88,570 - $119,830. 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:10-25%Telecommuting Options:OnsiteWork Location:USA DC WashingtonAdditional 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.We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 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 capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.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

ManTech is seeking a motivated, career and customer-oriented Information Systems Security Engineer to join our team in Linthicum, MD. The position is part of a team that provides security engineering in the Linthicum location and will provide implementation and/or integration of secure networking, computing and enclave environments.Responsibilities Included but are not limited to:Responsible for providing expertise in complying with Systems Security Certification & Accreditation (C&A) processes, to include discovery meetings, achieving Interim Approval to Test (IATT) and in obtaining final Approval to Operate (ATO) status for Systems Security Plans (SSP) associated with all mission systems to gain successful accreditation as well as manage all security relevant changes to the mission systems, assuring SSP documentation is up-to-date and ATO status is maintained.Perform/review technical security assessments of computing environments for non- complianceValidate and verify system security requirements definitions and analysis and establishes system security designsAssist architects and systems developers in the identification and implementation of appropriate information security functionalitySupport the building of security architectures and enforce the design and implementation of trusted relations among external systems and architecturesAssess and mitigate system security threats/risks throughout the program life cycleContribute to security planning, assessment, risk analysis, risk management, certification and awareness activities for system and networking operationsReview certification and accreditation documentation and provide feedback on completeness and compliance of its content.Minimum Qualifications:Bachelor's degree in Computer Science, Information Assurance, Information Security System Engineering, or related discipline from an accredited college or university7 years experience as an Information Systems Security Engineer on programs and contracts of similar scope, type, and complexity.In lieu of a degree four (4) years of additional Information Systems Security Engineer experience may be substituted for a bachelor's degree.IASAE Level 2 Certificate required.Clearance Requirements:Must have a current/active TS/SCI w/ Polygraph.Physical Requirements: The person in this position must be able to remain in a stationary position 50% of the time.Must communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

Type of Requisition:RegularClearance Level Must Currently Possess:Top SecretClearance Level Must Be Able to Obtain:Top SecretPublic Trust/Other Required:NoneJob Family:Information Systems ManagementJob Qualifications:Skills:Cybersecurity, Information System Security, NIST SP 800, Plan of Action and Milestones (POA&M), Security EvaluationsCertifications:NoneExperience:5 + years of related experienceUS Citizenship Required:YesJob Description:Information Systems Security Officer (ISSO)The Information System Security Officer (ISSO) is responsible for managing the full Risk Management Framework (RMF) lifecycle to support the Authorization to Operate (ATO) for assigned information systems. This includes leading initial ATO efforts for new systems and maintaining continuous compliance for systems with an existing ATO. The ISSO will work closely with system owners, engineers, and cybersecurity stakeholders to ensure all cybersecurity requirements are identified, documented, implemented, tested, and monitored in accordance with federal and organizational policies.Key Responsibilities:Serve as the primary cybersecurity point of contact for assigned information systems throughout the RMF lifecycle.Lead or support development of all RMF documentation including the System Security Plan (SSP), Security Assessment Plan (SAP), Security Assessment Report (SAR), Plan of Action and Milestones (POA&M), and other artifacts required for ATO packages.Coordinate with system owners, developers, engineers, and assessors to identify and implement security controls based on system categorization (FIPS 199), using NIST SP 800-53 (rev. 5).Conduct and document security impact analyses for system changes and ensure continuous monitoring strategies are implemented.Support vulnerability scanning, STIG application, risk assessments, and compliance reporting to ensure ongoing ATO maintenance.Maintain up-to-date knowledge of cyber regulations and best practices, including NIST, CNSSI, FedRAMP, DoD RMF, and agency-specific guidance.Track and report POA&M items to resolution, ensuring timely mitigation of findings and audit readiness.Interface with Authorizing Officials (AOs), Security Control Assessors (SCAs), and other stakeholders during security assessments, audits, and reviews.Support incident response and system recovery actions if security events occur.Required Qualifications:Bachelor’s degree in Information Systems, Cybersecurity, Computer Science, or related field; or equivalent experience.Minimum of 3–5 years of direct experience supporting RMF and ATO processes.Demonstrated expertise with NIST SP 800-53 controls and RMF steps.Familiarity with security tools (e.g., ACAS, Nessus, HBSS, STIG Viewer, Splunk).Working knowledge of eMASS or similar compliance tracking platforms.Experience writing or reviewing SSPs, POA&Ms, and related documentation.DoD 8570-compliant certification (e.g., Security+, CISSP, CISM, CAP).Preferred Qualifications:Experience with cloud-based systems (AWS, Azure, GovCloud) and FedRAMP.Familiarity with continuous ATO (cATO) environments and DevSecOps pipelines.Previous experience supporting DoD, DHS, or IC customers.Soft Skills:Strong written and verbal communication.Detail-oriented with excellent organizational and documentation skills.Ability to manage competing priorities and timelines in a fast-paced environment.Collaborative team player with the ability to interface across technical and non-technical stakeholders.Additional Requirements:Minimum of a DoD Final Top Secret security clearance at start.Must be able to work on siteThe likely salary range for this position is $139,984 - $180,550. 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 Fort BelvoirAdditional Work Locations:USA NM AlbuquerqueTotal 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.We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 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 capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.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

MANTECH seeks a motivated, career and customer-oriented Security Specialist to join our team in Washington, D.C. This is an onsite position.This is a position within Naval Sea Systems Command (NAVSEA) that primarily focuses on Communication Security (COMSEC) and information security management. This position is crucial for preserving the security of critical U.S. military technology and maintaining adequate support of national defense and security objectives throughout the NAVSEA Enterprise.Responsibilities include but are not limited to:Full lifecycle management of COMSEC materials, equipment, and programsDeveloping, implementing, and monitoring of security policies and proceduresConducting security training for personnel handling COMSEC and other sensitive informationManaging NAVSEA security programs in assigned areasCoordinating with internal and external stakeholders on security mattersEnsuring compliance with security regulations and conducting self-assessmentsPerforming other duties as assigned by the Deputy Director Corporate Programs, Security Programs, or designated representative. These duties will be within the general scope of security management and support the overall mission of the organizationMinimum Qualifications:High School Diploma6+ years of relevant experience in COMSEC, cryptography, or related areasExperience handling COMSEC devices and cryptographic materialsFamiliarity with security policy manuals, ICDs, JAFANs, and DOD manualsKnowledge of COMSEC accountability and the procedures for equipment issue/receipt, including inventory and mailingMust be willing to travel within the United States for site installations, training, or other mission-critical operations. Occasional CONUS or OCONUS travel may be required (up to 25%)Preferred Qualifications:Experience with Navy or DoD communications systems and securing sensitive informationBachelor's degree in Information Technology, Cybersecurity, Data Science, Computer Science, or related disciplineCompletion of a Navy-approved COMSEC Manager courseKnowledge of Navy and NSA COMSEC regulations and policiesExperience with a variety of Secure Communications Equipment (i.e., Harris, Raytheon, Kenwood, Motorola, ITT Exelis)Working knowledge of RF communications, VHF/UHF/SATCOM/Radio, and COMSEC policiesClearance Requirements:Must have an active Top-Secret security clearance.Physical Requirements:Must be able to walk, lift equipment weighing up to 50 pounds, and be able to carry a backpack weighing up to 25 pounds.Must be able to remain in a stationary position 50% of the time.Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and virtual communication, which may involve delivering presentations.