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What is it like to work at American Systems?

American Systems is a company that values collaboration, innovation, and customer satisfaction, fostering a culture of teamwork and dedication to delivering high-quality solutions.

As a mid-sized government contractor, American Systems operates with a flat organizational structure, allowing employees to work closely with senior leaders and contribute to mission-critical projects. The company's work environment is dynamic, with opportunities to work on a wide range of projects, from defense and intelligence to healthcare and energy.

Working at American Systems may appeal to candidates who are passionate about making a difference in their communities and are looking for a company that offers opportunities for professional growth, flexible work arrangements, and a comprehensive benefits package.

What makes American Systems an attractive place to work?

American Systems is a leading provider of IT, engineering, and logistics solutions to the US government and private sector, with a strong reputation for delivering high-quality services and supporting national security initiatives.

The company offers a dynamic work environment that values innovation, collaboration, and employee growth, with opportunities to work on complex projects, develop new skills, and contribute to the success of the organization.

Joining American Systems can provide professionals with a chance to make a meaningful impact, advance their careers, and be part of a team that supports critical national missions and initiatives.

What are the most popular job types at American Systems?

    What are the most popular jobs at American Systems?

    What are the most popular categories at American Systems?

    Infographic showing various Security job openings at American Systems in the United States as of August 2026, with employment types broken down into 99% Full Time, and 1% Part Time. Highlights an 91% Physical, 1% Hybrid, and 8% Remote job distribution.

    Information Systems Security Engineer / ISSE (HPC)

    AMERICAN SYSTEMS

    Arlington, VA • On-site

    $165K - $200K/yr

    Full-time

    Medical, Retirement, PTO

    Re-posted 17 days ago

    Job description

    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

    #hotjobs
    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

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