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# Information Systems Security Engineer (ISSE) - Red Hat Enterpris

- **Company:** AMERICAN SYSTEMS
- **Location:** Arlington, VA, United States
- **Experience:** Expert
- **Salary:** $165,000.0
- **Contract:** Permanent contract
- **Skills:** Ubuntu (Operating System), CentOS, Command-Line Interface, Cyber Security, Databases, Linux, VMware ESX Servers, PostgreSQL, Linux Commands, Oracle (Applications), Red Hat Enterprise Linux, SAP (Applications), SQL Databases, Virtualization Technology, Computer Networking Systems, High Performance Computing, SAPBasis, Selinux, Palo Alto Networks, Splunk, Cisco, Fedora
- **Published:** September 15, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9165248/information-systems-security-engineer-isse-red-hat-enterpris

## About the Role

* Active Top Secret/SCI with SAP eligibility
 * Bachelor's degree in a STEM discipline with 11-12 years of relevant experience, or
 + Master's degree with 8-10 years of relevant experience
 * Minimum 5 years of experience designing and implementing enterprise-scale security solutions with hands-on security assessment experience, including command-line validation, across Linux systems.
 * DoD 8140 IAT Level III-equivalent certification (e.g., SecurityX, CISSP, CCNP Security, CISA, GCED, GCIH, or CCSP)
 * Working experience in Linux command-line (eg. RHEL, Ubuntu, Fedora, CentOS)
 * Strong background in RMF, ICD 503, NIST SP 800-53, DCID 6/3, or current DoW authorization practices
 * Working knowledge of the JSIG and its application to RMF authorization
 * Experience supporting security tools such as Splunk Enterprise, ACAS, SELinux, Rsyslog, Shorewall, Firewalld
 * Demonstrated security engineering experience across Linux, Cisco networking, databases (SQL or Oracle), and virtualized environments

Pay Transparency Statement

## Description

As an Information Systems Security Engineer (ISSE) at AMERICAN SYSTEMS, you will:

 * Design and implement enterprise-level security architectures for RHEL systems in a High Performance Computing (HPC) SAP environment
 * Utilize RHEL command-line and systems knowledge to apply JSIG requirements across the entire environment.
 * Manually develop RMF/JSIG authorization artifacts, including SSPs, control narratives, POA&Ms, and supporting evidence
 * Perform hands-on security assessments on Linux, Palo Alto, Cisco, PostgreSQL and ESXI systems including command-line audits, compliance scans, log review, and control validation
 * Analyze scan results, identify security gaps, develop remediation plans and execute these plans in a production environment.
 * Validate and implement host-based firewall and auditd configurations in coordination with system administrators
 * Manage and track POA&Ms through mitigation, remediation, or risk acceptance
 * Ensure system compliance through continuous monitoring of controls, procedures, and documentation
 * Identify security deficiencies and provide actionable remediation recommendations
 * Support system recovery and lead technical security oversight following outages or incidents
 * Lead incident response investigation, mitigation, reporting and remediation.
 * Collaborate with engineering teams to integrate security requirements into system design and production releases.


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