Information Systems Security Engineer / ISSE (HPC)

AMERICAN SYSTEMS is seeking an experienced Information Systems Security Engineer to support Red Hat Enterprise Linux and Windows within a High Performance Computing environment in Arlington, Virginia. This role centers on security architecture design, RMF and JSIG artifact development, rigorous assessments, and ongoing compliance to safeguard critical HPC systems in a federal setting.

Below is a detailed outline of the position and its requirements, outlining responsibilities, qualifications, and the broader context of the role.

Responsibilities

• Develop and deploy enterprise security architectures for RHEL within an HPC SAP environment.
• Apply JSIG requirements to system authorization, control implementation, and documentation.
• Manually craft RMF and JSIG artifacts, including SSPs, control narratives, POA&Ms, and supporting evidence.
• Conduct hands-on security assessments on Linux and Windows systems, including CLI audits, compliance scans, log reviews, and control validation.
• Analyze scan results to identify gaps and support remediation planning and execution.
• Validate and implement host-based firewall and security configurations in collaboration with system administrators.
• Manage and track POA&Ms through mitigation, remediation, or risk acceptance.
• Ensure ongoing system compliance through continuous monitoring of controls, procedures, and documentation.
• Identify security deficiencies and provide actionable remediation recommendations.
• Support system recovery and security oversight after 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.

Requirements

• Active Top Secret/SCI with SAP eligibility.
• Bachelor’s degree in a STEM discipline with 11–12 years of relevant experience.
• Master’s degree with 8–10 years of relevant experience.
• Minimum 5 years 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 (for example, 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.

Technologies

• RHEL, Windows, Linux, SAP
• Splunk Enterprise, HBSS, McAfee ePO, ENS, DLP
• eMASS, Xacta, SQL, Oracle
• Cisco, Virtualized environments
• JSIG, RMF

Benefits

• Sign-on bonus
• Healthcare benefits
• Paid leave
• Retirement plans
• Insurance programs
• Education and training assistance

Overview

AMERICAN SYSTEMS, a 100 percent employee-owned federal contractor, seeks a seasoned ISSE to support RHEL and Windows within an HPC environment in Arlington, VA. The role includes a $10,000 sign-on bonus in addition to a competitive compensation package.

Pay Transparency Statement

AMERICAN SYSTEMS is committed to pay transparency for applicants and employee-owners. The salary range for this position is USD $165,000.00/Yr. to USD $200,000/Yr. Actual compensation will be determined based on several factors permitted by law. The company offers a comprehensive benefits program including healthcare, paid leave, retirement plans, insurance programs, and education and training assistance.

EEO Statement

AMERICAN SYSTEMS is an equal opportunity employer. EEO Race/Sex/Disability Status/Veteran Status.