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

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.

ManTech seeks a motivated, career and customer-oriented Security Specialist to support our DoD contract out of Arlington, VA.The Security Specialist will provide assistance to the Government security staff in the execution of their collateral, SAP and SCI duties.Responsibilities include but are not limited to:Personnel, information, physical, industrial and operations security in support of collateral, special access program (SAP), sensitive compartmented information (SCI), Insider Threat (InT), security education training and awareness (SETA) and alternative compensatory control measures (ACCM) programs.Assist with developing, implementing, managing, and monitoring policies, instructions, procedures, control systems, and methods to prevent compromise or loss of classified information or material.Assist with physical security, surveys, and inspections.Maintain security-related databases, such as DISS, to ensure the integrity of the applicable information.Prepare classified material for mailing in accordance with applicable DoD regulations (i.e. markings, receipting, wrapping, tracking).Review applications for security clearances for administrative completeness and submit applications as required.Prepare incoming and outgoing visit authorization requests (VARs) for command personnel and visitors to include coordination of foreign national certifications with the Defense Intelligence Agency (DIA) and applicable Embassies.Assist with security support to conferences (i.e. process VARs, verification of participant clearances, provide/transport classified information/materials, site surveys, on-site support, etc.).Minimum Qualifications:At least 4 years of experience in the security functional area.At least 4 years of experience with the latest security policies, processes, and procedures including personnel, information, physical, industrial and operations security in support of collateral, special access program (SAP), sensitive compartmented information (SCI), Insider Threat (InT), security education training and awareness (SETA) and alternative compensatory control measures (ACCM) programs.High School DiplomaPreferred Qualifications:Bachelors DegreeExperience with the Office of Secretary of Defense (OSD), Joint Staff, or Service-level security experience.Experience with handling classified correspondence and materials, knowledge of MicrosoftOffice suite tools, and experience in writing, editing, and managing executive correspondence.Demonstrated subject matter knowledge of DoD, intelligence community, and national-level personnel security policies and procedures.Clearance Requirement:Must have an active TS/SCI clearance.Physical Requirements:Sedentary Work

MANTECH seeks a motivated, career and customer-oriented Senior Security Officer (SSO), to join our team based in Washington, DC.As a Senior Security Officer (SSO), this position plays a critical role in supporting the SCIF facilities and industrial security (FSO) and personnel security (PERSEC) program for our customer.Responsibilities include but are not limited to:Serve as the primary SCIF access approver during normal operations (5 days/week) to include providing INDOC and special security training to all staff clearance holders on physical security (safeguarding), information security (processing and handling) of CNSI, and operations security.Support activities requiring the handling, safeguarding, and dissemination of CNSI to customer groups and sites that require CNSI access to include providing SCIF documentation (access rosters and access to approved clearance databases) and provide escort for SCIF visitors as needed.Maintain accurate intelligence consumer lists regarding clearances, need-to-know, system access, and required CNSI training after SCI indoctrinations and PERSEC updates to include reviewing Derivative Classification Products for proper application of derivative classification principles and maintain Derivative Classification training records for all classified account holders and notify them when biennial training is due.Oversee the Accreditation and Re-accreditation of customer security facilities; draft ATO letters or Accreditation Letters for secure facilities and liaise with the AO to receive Accreditation for SCIFs. Liaise with Security POCs, Program Manager, or Accrediting Official (AO) to document and address accreditation issues.Draft Construction Security Plans (CSP), TEMPEST checklists, SOPs and Facility Checklists. Oversee construction and collaborate with Facility Services, Construction Contractor, and partners to ensure compliance with construction requirements and oversee all CCR equipment installations, additions, repair, and maintenance and conduct annual inspections of SCIFs and CCRs to ensure compliance.Support and troubleshoot secure communications devices within in the customer’s enterprise across the U.S. and identify deficiencies in Physical, Information, and Operations Security disciplines and recommend actions for correction and track deficiencies to closure.Provide subject matter expertise and guidance for integrating and accrediting the Homeland Secure Data Network (HSDN) at customer locations work with customer and DHS managers to ensure successful implementation and updates. Verify security clearances and submit Visitor Access Requests (VARs) as required and support COOP and COG tests.Minimum Qualifications:Minimum of 8 years of expert experience performing all aspects of special program security, including Technical, Physical, Information, Personnel, Operational, and Industrial.Expert level experience and knowledge with ICD 503, ICD 704, ICD 705, Technical Surveillance Countermeasures (TSCM), TEMPEST, EMSEC, COMSEC and Radio Frequency (RF) propagation; expert level experience and knowledge engineering, designing, installing, and optimizing in-building IT, video, and communications systems, including telephone security and systems engineering.Demonstrated ability to identify and assess multiple sources for classification determinations control, marking, and dissemination principles and requirementsExpert experience with inspecting and maintaining ICD 705 compliance in construction and life-cycle of secure accredited facilities and expert level knowledge of intelligence functions and processes and counterintelligence.Experience with IP Network topologies and protocols, VoIP and Radio over Internet Protocol (RoIP) protocols and systems and network security practices for federal systems.Experience with FISMA procedures and compliance and obtaining and maintaining ATOs for facilities / spaces to include risk analysis, technical briefings, and project management.Experience with DISS and/or Scattered Castles; experience with COOP and COG and proficiency in the use of MS Office suite, including Word, Excel, Visio, Project, and PowerPoint.; travel – up to 25%Preferred Qualifications:Preferred to possess 15 years of experience performing all aspects of special program security, including Technical, Physical, Information, Personnel, Operational, and Industrial.Possess one of more of the following security certifications:Protection Professional (CPP)Physical Security Professional (PSP)Certified Security Supervisor (CSS) certificationsClearance Requirements:Must have a current/active TS/SCI.Physical Requirements:Must be able to remain in a stationary position 50%Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printerThe person in this position frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations

ManTech seeks a Program Security Officer, Journeyman, in support of our government customer. The Program Security Officer provides special access security oversight for the Missile Defense Agency supporting 10,0000+ personnel at numerous geographically separated locations.Responsibilities include but are not limited to:Interface with senior agency leadership and government officials to develop, document and publish MDA Special Access Program (SAP) Security Policy to protect sensitive special programs.Provide all facets of program security management in support of SAP initiatives, to include personnel, physical, information, industrial, and SCI security.Present indoctrination, debrief, and refresher training for program briefed personnel regarding obligations to protest classified informationEnsure adequate secure storage and workspaces for customers, conduct annual inventory of accountable classified material and provide guidance and oversight to defense contractors.Prepare CUAs, MOUs, and MOAs for resident non-MDA SAPs for review and approval, develop and maintain SAP documentationPrepare and submit SOP, monitor security incidents. Maintain SOP facility and personnel folders.Maintain TSCO log book. Implement all applicable requirements to maintain Facility IDSMinimum Qualifications:Has 3+ years of experience as a Program Security Officer (PSO) with at least 3 cumulative years in acquisition SAPs. The last SAP-related position must be within the last nine months.The PSO-Journeyman is capable of developing and implementing a multi-disciplined security program for complex, major acquisition Special Access Programs (SAPs). Knowledgeable of personnel, industrial, physical, IT/IA, and information security disciplines.BS/BA in related field or a combination of lower-level education, formal training and experience beyond the basic Journeyman baseline.Periodic travel is required for both CONUS and OCONUS locations.Must be able to travel at times that exceed two weeks per occurrence.Security Requirements:TS/SCIPhysical requirements:Must be able to be in a stationary position more than 50% of the timeMust be able to communicate, converse, and exchange information with peers and senior personnelConstantly operates a computer and other office productivity machinery, such as a computer...Less