Information Security System Engineer

Elevate Technology Group; Fairfax (VA); Hybrid; USD 150,000 - 220,000; Full time

Benefits offered by this job

Flexible working hours

8 weeks PTO

Medical, Dental & Vision

Life Insurance

Tuition reimbursement

Employer-funded 401(k) 25%

Job summary

Elevate Technology Group is seeking an Information Systems Security Engineer (ISSE) to bridge cybersecurity requirements with technical implementation for IC and DoD programs. You will collaborate with program leadership, engineers, and developers to ensure RMF A&A compliance for complex Linux-based systems in secure environments.

The role emphasizes ICD-503, RMF, vulnerability management, and continuous monitoring, with active TS/SCI clearance and CI Polygraph as requirements, delivering

Qualifications

• Experience supporting Intelligence Community or DoD cybersecurity programs.
• Strong understanding of ICD-503 and A&A processes.
• Experience developing RMF security documentation and continuous monitoring.
• Vulnerability management and audit support experience.
• Strong Linux systems administration/engineering experience.
• Security+ or CISSP certification preferred.

Responsibilities

• Lead RMF activities and coordinate A&A tasks with stakeholders.
• Prepare and maintain accreditation and RMF documentation.
• Develop security and contingency plans and incident response procedures.
• Support vulnerability scanning, remediation, and audit activities.
• Collaborate with developers and program teams to implement security controls.
• Assess architectures for security compliance and manage lifecycle security.

Skills

RMF

ICD-503

A&A

Linux

Security+

CISSP

Communication

Tools

NESSUS

NMAP

Trivy

ServiceNow

Job description

### Information Security System Engineer**Role:** Information Systems Security Engineer (ISSE) **Location:** Fairfax, VA or Greenwood Village, CO **Clearance: Active TS/SCI with CI Polygraph Required** **Compensation:** $150,000 - $220,000 Base Salary + 50% Additional Employer-Funded Compensation**Total Package Value: Up to $330,000****Benefits** Employer-funded 401(k) contribution worth 25% of base salary Flexible benefits allowance worth 25% of base salary (can be taken as benefits or additional compensation) Up to 8 weeks PTO Medical, Dental & Vision coverage Life Insurance 100% tuition reimbursement (Degrees, Certifications & Professional Development) Flexible working hours Long-term, mission-critical programs supporting the US Intelligence Community **The Opportunity**We're supporting a highly respected technology organization delivering advanced solutions across the US Intelligence Community and National Security sector.As an Information Systems Security Engineer (ISSE), you'll serve as the critical link between cybersecurity compliance requirements and technical implementation. Working alongside program leadership, engineers and development teams, you'll play a key role in ensuring complex mission systems meet stringent security and accreditation requirements while supporting ongoing operational and development activities.This is a highly visible position offering exposure to large-scale Linux environments, cybersecurity engineering, Risk Management Framework (RMF) processes and enterprise security architecture within some of the most security-conscious environments in government.**What You'll Be Doing*** Leading and supporting ICD-503 Risk Management Framework (RMF) activities* Preparing and maintaining accreditation and Assessment & Authorization (A&A) documentation* Developing security plans, contingency plans, incident response plans and risk management documentation* Supporting continuous monitoring, vulnerability management and compliance initiatives* Working closely with developers, engineers and program stakeholders to implement security controls* Reviewing and assessing system architectures to ensure compliance with security requirements* Supporting vulnerability scanning, remediation and audit activities* Providing cybersecurity guidance throughout the system lifecycle* Supporting Linux-based enterprise environments and security operations**What We're Looking For*** Experience supporting Intelligence Community or DoD cybersecurity programs* Strong understanding of ICD-503 and Assessment & Authorization (A&A) processes* Experience developing and maintaining RMF security documentation* Experience supporting vulnerability management and continuous monitoring programs* Experience with NESSUS, NMAP, Trivy, ServiceNow or similar security and compliance tools* Strong Linux systems administration or engineering experience* Experience evaluating security architectures and technical solutions* Security+ or CISSP certification* Excellent communication and stakeholder management skills**Desirable Experience*** Red Hat Enterprise Linux administration* Kubernetes environments* Puppet, Ansible or other automation tools* AWS or cloud technologies* VMware environments* CCNA or equivalent networking experience* Git, GitLab or other source control platforms* Enterprise monitoring and logging platforms* Oracle, MySQL or other relational databases* Cross Domain Solutions (CDS) technologies* Linux scripting using Bash, Python or similar languages**Applicants must hold an active TS/SCI clearance with CI Polygraph.****Keywords** ISSE, Information Systems Security Engineer, Information Assurance, Information Security, Cyber Security Engineer, RMF, ICD-503, A&A, Assessment and Authorization, NIST 800-37, Security Engineer, Linux Engineer, Red Hat, Kubernetes, CISSP, Security+, NESSUS, NMAP, Trivy, ServiceNow, AWS, VMware, TS/SCI, CI Polygraph, Intelligence Community, Defense, Government Contracting.Location: Fairfax, Virginia | Salary: $150000 - $220000 per year | Job type: Permanent| Posted: 16/06/2026