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Information Systems Security Engineer; ISSE Security Clearance

Job in Lorton, Fairfax County, Virginia, 22079, USA
Listing for: KBR
Full Time position
Listed on 2026-07-24
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Information Security & Data Protection
Job Description & How to Apply Below
Position: Information Systems Security Engineer (ISSE) with Security Clearance
Title:

Information Systems Security Engineer (ISSE) Belong. Connect. Grow. with K ! K '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 - protecting our national security. Why Join Us?
* Innovative Projects: K 's work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions.

* Collaborative Environment:
Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace.

* Impactful Work:
Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of Joint and multi-domain operations.

Key Responsibilities:

K  seeks an Information Systems Security Engineer to provide Senior Cloud Information Systems Security Engineer support to the government program manager to:
* Integrate cybersecurity requirements into system architecture, design, and engineering processes from concept through deployment

* Develop and maintain system security artifacts including Security Plans, Security Controls Traceability matrices, architectural diagrams, and engineering documentation

* Perform security engineering analyses, including threat modeling, vulnerability assessments, and security impact analyses of proposed changes

* Select, tailor, and implement security controls aligned with NIST SP 800-53, CNSSI 1253, the Joint Special Access Program (SAP) Implementation Guide, and/or applicable organizational frameworks

* Communicate risk analysis associated with engineered solutions including mitigation strategies, residual risk and risk-benefit recommendations

* Perform requirements analysis, design, and integration for complex software applications and collaboration infrastructures

* Participate in the change management process, including submitting and reviewing Change Requests (CRs) and assisting in the assessment of security impact of proposed changes

* Create and maintain information system security documentation, Standard Operating Procedures (SOP), and provide guidance on active Plans of Action and Milestones (POA&M)

* Conduct periodic and continuous monitoring of the system, procedures, and documentation to ensure compliance with the authorization

* Collaborate with ISSOs, system administrators, and development teams to remediate vulnerabilities and ensure secure system configurations

* Communicate with multiple systems owners to address security relevant design and integration requirements for hybrid systems

* Evaluate cloud supporting technologies in areas of encryption, identity and access control, boundary protection, and logging/monitoring

* Support incident response and forensic analysis as needed, ensuring proper coordination with organizational cybersecurity teams

* Support development and execution of governance frameworks for managing and authorizing national security systems Work Environment:

* Location:

On-site

* Travel Requirements:
Minimal 0-25%

* Working Hours:

Standard

Qualifications:

Required:

* Must have experience working with Special Access Programs (SAPs)

* Strong proficiency in Cloud architecture and associated security elements

* Must possess excellent analytical skills and be capable of quantifying risk to enterprise systems
and level of compliance with security policy

* 12+ years' technical experience in cybersecurity, information technology, or systems engineering

* Excellent communication skills (verbal and written) required

* Master's Degree in engineering, computer science, cybersecurity, networking, or programming

* Current/active Top Secret/SCI;
Current or recent DoD SAP access

* Subject to a Counterintelligence (CI) polygraph Desired:
* Advanced knowledge in one or more of the following areas:

* Secure systems engineering practices, including threat modeling, security architecture design, and/or system hardening

* Software Development in Java, Python, Ruby and/or C++

* Linux Expertise

* Dynamic &…
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