Information Systems Security Engineer / ISSE (HPC)

Overview

AMERICAN SYSTEMS, a 100% employee-owned federal contractor, is seeking a highly experienced Information Systems Security Engineer (ISSE) to support RHEL and Windows systems in a High Performance Computing (HPC) environment in Arlington, VA .

This role includes a $10,000 sign-on bonus in addition to a generous compensation package.

Responsibilities

• 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

• Apply JSIG requirements to system authorization, control implementation, and documentation

• Manually develop RMF/JSIG authorization artifacts , including SSPs , control narratives , POA&Ms, and supporting evidence

• Perform hands-on security assessments on Linux and Windows systems , including command-line audits , compliance scans, log review, and control validation

• Analyze scan results, identify security gaps, and support remediation planning and execution

• Validate and implement host-based firewall and security 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 security oversight following outages or incidents

• Participate in change management activities, assessing security impacts to SAP systems

• Support security investigations, incident response , and remediation activities

• Collaborate with engineering teams to integrate security requirements into system design and production releases

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Qualifications

• 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 across Linux systems , including command-line validation

• DoD 8140 IAT Level III –equivalent certification (e.g., SecurityX , CISSP , CCNP Security, CISA, GCED, GCIH, or CCSP)

• Strong background in RMF , ICD 503, NIST SP 800-53, DCID 6/3, or current DoD authorization practices

• Working knowledge of the JSIG and its application to RMF authorization

• Proven experience authoring RMF/JSIG artifacts by hand , without reliance on automated RMF tools (eMASS, Xacta, etc.)

• Experience supporting security tools such as Splunk Enterprise, HBSS , McAfee ePO , ENS , and DLP

• Demonstrated security engineering experience across Linux, Windows , Cisco platforms, databases ( SQL or Oracle ), and virtualized environments

• AMS1

Pay Transparency Statement AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $165,000.00/Yr. - USD $200,000/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance. EEO Statement EEO Race/Sex/Disability Status/Veteran Status