Linux Security Engineer – Networking & Automation

AMERICAN SYSTEMS; City of Middletown (NY); On-site; USD 85,000 - 120,000; Full time

Job summary

AMERICAN SYSTEMS is seeking an Information Assurance/Security Engineer – Linux Systems Specialist to administer, secure, troubleshoot, and optimize Linux‑based systems in complex operational environments.

The role requires deep hands‑on Linux administration with strong networking knowledge and experience in secure environments supporting critical infrastructure. Shell scripting or Python development is expected to enhance capabilities.

Qualifications

• Bachelor's degree and 2-4 years of related work experience.
• US Navy and submarine system experience highly desired.
• Red Hat/Linux certifications desired.
• Strong networking skills desired.

Responsibilities

• Install, configure, secure, and maintain Linux operating systems in enterprise and mission‑critical environments.
• Administer Linux servers, services, user accounts, file systems, patches, and access controls.
• Monitor system performance and availability, analyze logs, and troubleshoot complex operational issues.
• Serve as a primary technical resource for network troubleshooting across Linux hosts and connected infrastructure.
• Configure, manage, and troubleshoot network services and protocols, including TCP/IP, DNS, DHCP, routing, switching, VLANs, VPNs, firewalls, and interface bonding.
• Analyze packet flow, connectivity, latency, and service communication issues across local and remote systems.
• Support network integration and interoperability of Linux systems with mission platforms, enclaves, and external interfaces.
• Develop, maintain, and enhance system capabilities using shell scripting and/or Python.
• Implement system hardening, patching, and vulnerability remediation in accordance with security requirements.
• Support backup, recovery, continuity, and system restoration procedures.
• Collaborate with cybersecurity, network engineering, software, and systems engineering teams to maintain reliable operations.
• Maintain technical documentation, network diagrams, system procedures, and configuration baselines.
• Support lab, test, deployment, and operational environments as required.
• Provide support for specialized defense systems.

Skills

Linux administration

Networking

Shell scripting

Python

US Navy / submarine systems experience

Red Hat Linux certifications

Education

Bachelor's degree in a related field

Job description

AMERICAN SYSTEMS is seeking an Information Assurance/Security Engineer – Linux Systems Specialist to administer, secure, troubleshoot, and optimize Linux‑based systems in complex operational environments.

The role requires deep hands‑on Linux administration with strong networking knowledge and experience in secure environments supporting critical infrastructure. Shell scripting or Python development is expected to enhance capabilities.