Senior Information Systems Security Engineer (ISSE) – DoD RMF

Entarian; North Charleston (SC); On-site; USD 103,000 - 121,000; Full time

Job summary

Entarian seeks an experienced Information System Security Engineer (ISSE) to support NIWC Atlantic’s Expeditionary Enterprise Systems and Services Division. The ISSE will integrate cybersecurity into system architectures and lifecycle activities, ensuring compliance with RMF, NIST standards, CNSSI 1253, and DoD guidance.

The ideal candidate has experience in large defense environments, working with engineers, developers, ISSM/ISSO, and government stakeholders to deliver secure, mission-focused

Qualifications

• Bachelor’s degree in Cybersecurity, Computer, Electrical, or Electronics Engineering, ABET accredited.
• Minimum three years’ experience developing and maintaining cybersecurity policies, including A&A activities.
• Must hold a DoD 8570/8140 Level I certification in IAM, IAT, or IASAE.

Responsibilities

• Integrate cybersecurity requirements into system architecture, engineering designs, interface specifications, and technical documentation throughout the lifecycle.
• Engineer, implement, and validate security controls per NIST RMF, NIST SP 800-53, CNSSI 1253, and DoD guidance.
• Conduct architecture reviews, vulnerability assessments, threat analysis, risk assessments, attack surface analysis, and mitigation planning.
• Develop and maintain technical cybersecurity documentation such as SSPs, control statements, diagrams, interfaces, and analyses.
• Support RMF activities including SAPs, SARs, POA&Ms, continuous monitoring docs, and authorization artifacts.

Skills

Clearance required

Technical writing

Verbal communication

Education

ABET-accredited degree

Tools

ACAS

Nessus

SCAP

Job description

Entarian seeks an experienced Information System Security Engineer (ISSE) to support NIWC Atlantic’s Expeditionary Enterprise Systems and Services Division. The ISSE will integrate cybersecurity into system architectures and lifecycle activities, ensuring compliance with RMF, NIST standards, CNSSI 1253, and DoD guidance.

The ideal candidate has experience in large defense environments, working with engineers, developers, ISSM/ISSO, and government stakeholders to deliver secure, mission-focused