Senior Information System Security Engineer

4 weeks ago


Chantilly, United States ManTech Full time

Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International Corporation, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement.

Currently, ManTech is seeking a motivated, mission-oriented Senior Information System Security Engineer (ISSE), in Chantilly, VA area, with strong customer relationships. As a Senior Information System Security Engineer (ISSE), you will use your technical ISSE and IA experience to provide advice, assistance, and guidance to a government intelligence customer.

Responsibilities include, but are not limited to:

  • Perform, or review, technical security assessments of computing environments to identify points of vulnerability, non-compliance with established Information Assurance (IA) standards and regulations, and recommend mitigation strategies.

  • Validate and verify system security requirements definitions and analysis, and establishes system security designs.

  • Apply knowledge of IA policy, procedures, and workforce structure to design, develop, and implement secure networking, computing, and enclave environments.

  • Support security planning, assessment, risk analysis, and risk management.

  • Identify overall security requirements for the proper handling of Government data.

  • Contribute to the security planning, assessment, risk analysis, risk management, certification and awareness activities for system and networking operations.

  • Review certification and accreditation (C&A) documentation, providing feedback on completeness and compliance of its content.

  • Apply system security engineering expertise in one or more of the following: system security design process; engineering life cycle; information domain; cross domain solutions; commercial off-the-shelf and government off-the-shelf cryptography; identification, authentication, and authorization; system integration; risk management; intrusion detection; contingency planning; incident handling; configuration control; change management; auditing; certification and accreditation process; principles of IA (confidentiality, integrity, non-repudiation, availability, and access control); and security testing.

  • Support security authorization activities in compliance with Information System Certification and Accreditation Process (ICD 503), the NIST Risk Management Framework (RMF) process, and prescribed ICs business processes for security engineering.

  • Assist architects and systems developers in the identification and implementation of appropriate information security functionality to ensure uniform application of government security policy and enterprise solutions.

  • Support the building of security architectures.

  • Enforce the design and implementation of trusted relations among external systems and architectures.

  • Assess and mitigate system security threats/risks throughout the program life cycle.

  • Participate as a security engineering representative on engineering teams for the design, development, implementation and/or integration of secure networking, computing, and enclave environments,

  • Participate as a security engineering representative on engineering teams for the design, development, implementation and/or integration of IA architectures, systems, or system components,

  • Participate as a primary security engineering representative on engineering teams for the design, development, implementation, evaluation, and/or integration of secure networking, computing, and enclave environments.

  • Support the Government in the enforcement of the design and implementation of trusted relationships among external systems and architectures.

Basic Qualifications:

  • Bachelor’s degree in Computer Science, Information Assurance, Information Security System Engineering, or related discipline from an accredited college or university is required. 5 or more years of ISSE experience may be substituted for a bachelor’s degree.

  • 7 or more years related experience and at least 4 or more years’ experience as an ISSE on programs and contracts of similar scope, type, and complexity required.

  • CISSP certification or equivalent is required.

  • Occasional travel, 25% CONUS

Security Clearance Requirement:

Active/current TS/SCI with Polygraph is required.

Physical Requirements:

  • Must be able to be in a stationary position more than 50% of the time

  • Must be able to communicate, converse, and exchange information with peers and senior personnel

  • Constantly operates a computer and other office equipment

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.



  • Chantilly, United States ManTech Full time

    Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International Corporation, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement.Currently, ManTech is seeking a motivated, mission-oriented Senior...


  • Chantilly, Virginia, United States ManTech Full time

    Job SummaryWe are seeking an experienced Senior Information System Security Engineer (ISSE) to join our team in Chantilly, VA. In this role, you will use your technical expertise to provide advice, assistance, and guidance to government intelligence customers. This includes performing or reviewing technical security assessments, validating system security...


  • Chantilly, Virginia, United States ManTech Full time

    About the RoleThis position requires a highly motivated individual with strong customer relationships and a proven track record in Information System Security Engineering (ISSE). As a Senior Information System Security Engineer - Enclave Environment Specialist, you will use your technical expertise to provide advice and guidance to government intelligence...


  • Chantilly, United States Strategic ASI Full time

    Our client is seeking an Information Systems Security Engineer. Our Government customer develops and operates unique and innovative reconnaissance systems and conducts intelligence-related activities for U.S. National Security. IT within our customer plays a key role in the success of the War Fighter "boots on the ground" and within the Intelligence...


  • Chantilly, United States Apogee Integration Full time

    Security Clearance: Active TS/SCI with CI Polygraph requiredCovid-19 Vaccination: Being fully vaccinated is requiredPosition The National Reconnaissance Office (NRO) is the U.S. Government agency in charge of designing, building, launching, and maintaining America's intelligence satellites. Develop. Acquire. Launch. Operate. This particular contract effort...


  • Chantilly, United States ManTech Full time

    ManTech is seeking a motivated, mission- oriented Information Systems Security Engineer in the Chantilly, VA area to provide unparalleled support to our customer. Responsibilities include, but are not limited to: IAT personnel focus on the client IS and support, monitor, test and troubleshoot hardware and software IA problems Expert in IAT...


  • Chantilly, United States ManTech Full time

    ManTech is seeking a motivated, mission- oriented Information Systems Security Engineer in the Chantilly, VA area to provide unparalleled support to our customer. Responsibilities include, but are not limited to: IAT personnel focus on the client IS and support, monitor, test and troubleshoot hardware and software IA problems Expert in IAT...


  • Chantilly, United States TENICA Global Solutions Full time

    Senior Information Systems Security Engineer (ISSE) TS/SCI CI PolyDepartment: Government Customer- Chantilly Location: Chantilly, VA Senior ISSEPosition Description: The Senior Information Systems Security Engineer provides support to the customer in the area of Cyber Security. Daily Tasks include, but are not limited to: • Provides analytical and...


  • Chantilly, United States KBR Full time

    Title: Information Systems Security Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country’s most critical role –...


  • Chantilly, United States KBR Full time

    JOB DESCRIPTIONTitle: Information Systems Security EngineerBelong. Connect. Grow. with KBR!KBR’s Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and security communities. In this position, your work will have a profound impact on the country’s most critical role – protecting...


  • Chantilly, United States Cyber Defense Technologies Full time

    Overview: Cyber Defense Technologies (CDT) is seeking a highly skilled and motivated Information Systems Security Engineer (ISSE) onsite in Chantilly, VA. The ideal candidate will be responsible for information systems security engineering activities throughout the lifecycle. Clearance Requirements: An active TS/SCI with CI polygraph. Candidates who do...


  • Chantilly, United States Booz Allen Hamilton Full time

    Information System Security EngineerThe Opportunity: Are you looking for an opportunity to share your experience in securing systems? As a systems security and network security engineer, you can identify the applications, approaches and techniques needed to assess vulnerabilities and recommend the best solution and security strategy. We need your experience...


  • Chantilly, United States Two Six Technologies Full time

    At Two Six Technologies, we build, deploy, and implement innovative products that solve the world’s most complex challenges today. Through unrivaled collaboration and unwavering trust, we push the boundaries of what’s possible to empower our team and support our customers in building a safer global future. At Two Six Technologies, we build, deploy, and...


  • Chantilly, United States ManTech Full time

    ManTech is seeking a motivated, mission- oriented Information Systems Security Engineer in the Chantilly, VA area to provide unparalleled support to our customer.Responsibilities include, but are not limited to:IAT personnel focus on the client IS and support, monitor, test and troubleshoot hardware and software IA problemsExpert in IAT functionsProvide IT...


  • Chantilly, United States Cornerstone Defense Full time

    Location: Chantilly, Virginia Type: Contract Job #3068 Title: Information Systems Security Engineer Location: Chantilly, VA *Clearance: *Active TS/SCI w/ Polygraph needed to apply * Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on...


  • Chantilly, Virginia, United States Eleccion, LLC Full time

    About the Role:Eleccion, LLC seeks a highly skilled Senior Information Security Engineer to join our team. This position offers a competitive salary of $120,000 - $180,000 per annum.In this role, you will be responsible for supporting the development and implementation of information assurance solutions that meet U.S. Government requirements. You will...


  • Chantilly, United States KBR Full time

    Title:Information System Security Engineer - TS/SCIKBR is seeking an Information Systems Security Engineer (ISSE) provides support to the customer in the area of Cyber Security. Responsibilities:Provide analytical and technical security recommendations to the customerLead the identification of projects’ security requirementParticipate in network design...


  • Chantilly, Virginia, United States System One Full time

    Cloud Security ExpertWe are seeking a Cloud Security Expert to support our IC customer Program focused on the Integration, Operations, and Sustainment of various systems.About the Position:The Cloud Security Expert will need to be a self-starter with excellent analytical and problem-solving skills, flexibility, good judgment and the ability to coordinate...


  • Chantilly, Virginia, United States Avenue Technologies Defunct Full time

    Avenue Technologies Defunct**Job Title:** Cyber Security Systems Engineer**Estimated Salary:** $100,000 - $160,000 per year**Job Description:** In this role, you will be responsible for capturing and refining information security requirements, ensuring they are integrated into IT component products and information systems through purposeful security...


  • Chantilly, United States Allen Integrated Solutions LLC Full time

    Information System Security Engineer (ISSE) Level 3 Clearance Required: TS/SCI with Current CI Poly Minimum Years' Experience: Overall Assignment Description: In this role you will ensure cybersecurity requirements are identified, allocated, implemented, verified and continuously monitored throughout the system life cycle. What You'll Be Doing: Define...