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Senior Information System Security Engineer
Full Visibility LLCUnited Statesfull_timeVerifiedPosted 17 Jul 2025
About the role
Senior Information System Security Engineer – Fairfax, VA
Full Visibility is seeking a Senior Information System Security Engineer to work in Fairfax, VA. Candidate must possess an active Top Secret/SCI clearance.
The Senior Information System Security Engineer(ISSE) will identify information protection needs for an information system and network environment. The candidate will design security architectures, design and develop cybersecurity-enabled products, and integrate and/or implement security with Cross Domain Solutions (CDS) for use within the information system and network environment. The ideal candidate will develop and implement security designs for new or existing network system(s), include system deployed into the cloud, and will ensure that the design of hardware, operating systems, and software applications adequately address cybersecurity requirements and implementation of EO14028 for the information system and network environment. The successful candidate will design, develop, and implement network security measures that provide confidentiality, integrity, availability, authentication, and non-repudiation. The candidate will design, develop, and implement specific cybersecurity countermeasures and develop interface specifications for the information system and network environment. The Senior Information System Security Engineer(ISSE) will develop approaches to mitigate information system and network environment vulnerabilities and recommend changes to network or network system components as needed, and ensures that network system(s) designs support cybersecurity vulnerability solutions. The candidate will design, develop, and implement cybersecurity capability into the Cl/CD pipeline, operate within the Risk Management Framework (RMF), including Steps 1-6, and ensure ongoing compliance through Continuous Monitoring, and configure and execute Nessus scans, interpret results, and feed findings into POA&M and risk analysis processes. The successful candidate will support system design reviews, architecture security assessments, and integrate security from requirements through sustainment. The ISSE will secure cloud-based architectures (AWS, Azur, etc.), integrate security into Cl/CD pipelines (DevSecOps), and apply NIST and DoD guidance to Al tools and services in cloud environments, and define IS and Network Environment security requirements in accordance with applicable cybersecurity requirements. The ideal candidate will assist with other duties as assigned in the unit and be able to work in a 24/7 operational environment.
FV REQ 1700302
• At least five (5+) years of ISSE experience
• Expert in systems security requirements and policy, and incident response and management
• Experience and knowledge with security frameworks and standards such as NIST, ISO 27001, and CIS Controls
• Cloud security frameworks and associated controls experience and knowledge
• Experience and knowledge with systems engineering and principles and practice
• Secure software development lifecycle methodologies experience and knowledge
• Cloud security pipeline principles and technologies experience and knowledge
• Experience and knowledge with risk assessments, threat modeling, and vulnerability management
• Possess experience and knowledge with secure architecture design and implementation
• Experience and knowledge with integrating security controls into system development
• Experience and knowledge with designing and implementing secure system architectures
Preferred:
• Experience securing cloud-native systems, implementing security gates in Cl/CD, or managing Al/ML model risks within federal or
Full Visibility is seeking a Senior Information System Security Engineer to work in Fairfax, VA. Candidate must possess an active Top Secret/SCI clearance.
The Senior Information System Security Engineer(ISSE) will identify information protection needs for an information system and network environment. The candidate will design security architectures, design and develop cybersecurity-enabled products, and integrate and/or implement security with Cross Domain Solutions (CDS) for use within the information system and network environment. The ideal candidate will develop and implement security designs for new or existing network system(s), include system deployed into the cloud, and will ensure that the design of hardware, operating systems, and software applications adequately address cybersecurity requirements and implementation of EO14028 for the information system and network environment. The successful candidate will design, develop, and implement network security measures that provide confidentiality, integrity, availability, authentication, and non-repudiation. The candidate will design, develop, and implement specific cybersecurity countermeasures and develop interface specifications for the information system and network environment. The Senior Information System Security Engineer(ISSE) will develop approaches to mitigate information system and network environment vulnerabilities and recommend changes to network or network system components as needed, and ensures that network system(s) designs support cybersecurity vulnerability solutions. The candidate will design, develop, and implement cybersecurity capability into the Cl/CD pipeline, operate within the Risk Management Framework (RMF), including Steps 1-6, and ensure ongoing compliance through Continuous Monitoring, and configure and execute Nessus scans, interpret results, and feed findings into POA&M and risk analysis processes. The successful candidate will support system design reviews, architecture security assessments, and integrate security from requirements through sustainment. The ISSE will secure cloud-based architectures (AWS, Azur, etc.), integrate security into Cl/CD pipelines (DevSecOps), and apply NIST and DoD guidance to Al tools and services in cloud environments, and define IS and Network Environment security requirements in accordance with applicable cybersecurity requirements. The ideal candidate will assist with other duties as assigned in the unit and be able to work in a 24/7 operational environment.
FV REQ 1700302
Requirements
• Active Top Secret/SCI Clearance• At least five (5+) years of ISSE experience
• Expert in systems security requirements and policy, and incident response and management
• Experience and knowledge with security frameworks and standards such as NIST, ISO 27001, and CIS Controls
• Cloud security frameworks and associated controls experience and knowledge
• Experience and knowledge with systems engineering and principles and practice
• Secure software development lifecycle methodologies experience and knowledge
• Cloud security pipeline principles and technologies experience and knowledge
• Experience and knowledge with risk assessments, threat modeling, and vulnerability management
• Possess experience and knowledge with secure architecture design and implementation
• Experience and knowledge with integrating security controls into system development
• Experience and knowledge with designing and implementing secure system architectures
Preferred:
• Experience securing cloud-native systems, implementing security gates in Cl/CD, or managing Al/ML model risks within federal or
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