Information Security Engineer - Linux Administrator

AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of Information Technology, Test & Evaluation, Program Mission Support, Engineering & Analysis, and Training. We are seeking a journeyman-level Linux Server Administrator to support the installation, configuration, operation, security, and maintenance of Linux-based systems in a mission-critical Department of Defense environment. The successful candidate will monitor system performance, troubleshoot technical issues, perform system hardening and patching, manage user access, and maintain system documentation.

Responsibilities

• Install, configure, administer, and maintain Linux servers, operating systems, and supporting infrastructure.
• Monitor system availability, performance, capacity, security, and resource utilization.
• Diagnose and resolve server hardware, operating system, storage, application, and network connectivity issues.
• Perform operating system patching, software updates, configuration changes, and routine system maintenance.
• Secure and harden Linux systems in accordance with organizational policies, DoD requirements, and applicable Security Technical Implementation Guides (STIGs).
• Manage user accounts, groups, permissions, privileged access, authentication, and system audit logs.
• Configure and maintain services such as SSH, DNS, NFS, web services, time synchronization, and centralized logging.
• Support vulnerability scanning, security assessments, compliance reviews, and remediation activities.
• Implement and verify backup, restoration, disaster recovery, and continuity-of-operations procedures.
• Use scripting and automation tools to improve the efficiency and consistency of administrative tasks.
• Assist with incident response, root-cause analysis, and corrective-action implementation.
• Maintain system configuration records, operating procedures, diagrams, inventories, and troubleshooting documentation.
• Coordinate with cybersecurity, network, software, engineering, and customer support teams.
• Participate in scheduled maintenance activities and provide after-hours support when required.
• Travel occasionally to customer or program sites.
• Qualifications U.S. Citizenship.
• Active DoD SECRET security clearance.
• Working knowledge of one or more Linux distributions, such as Red Hat Enterprise Linux, Rocky Linux, AlmaLinux, CentOS, Ubuntu, or SUSE.

Requirements

• Bachelor’s degree in information technology, computer science, cybersecurity, engineering, or a related discipline and approximately three years of relevant experience; additional relevant experience, education, or technical training may be considered in lieu of a degree.
• Journeyman-level experience administering Linux systems in enterprise, engineering, laboratory, or mission-support environments.
• Linux installation, configuration, patching, and troubleshooting
• User, group, file system, and permissions management TCP/IP networking and common network services
• Storage, logical volumes, file systems, and backup operations
• Shell scripting using
• Bash or a comparable scripting language
• System monitoring, logging, and performance analysis

Security hardening and vulnerability remediation

• Ability to analyze technical problems, identify root causes, and implement effective solutions.
• Ability to create and maintain clear technical documentation.
• Strong verbal and written communication skills.
• Ability to work independently and collaboratively in a controlled, on-site environment.

Preferred

• Familarity with undersea platform systems or prior submarine fleet experience is highly desired.

Pay

• Statement AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners.
• The salary range for this position is USD $85,000.00/Yr. - USD $125,000/Yr.
• Actual compensation will be determined based on several factors permitted by law.

Benefits

• 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.

Overview

This position requires full-time, on-site work in Middletown, Rhode Island, and may require occasional travel to customer or program locations.

EEO Statement EEO Race/Sex/Disability Status/Veteran Status