Linux System Administrator

Amatriot Group, LLC; Beavercreek (OH); On-site; USD 90,000 - 130,000; Full time

Job summary

Amatriot Group, LLC in Beavercreek, Ohio seeks a Linux System Administrator to support DoD/IC deployments. The role focuses on installation, configuration, security, and performance of Linux-based systems across the enterprise, with a short-term contract ending December 2026.

Responsibilities include managing Red Hat, Rocky Linux, Ubuntu, applying patches, automating with Ansible, and coordinating changes with IT and security teams; DoD 8140 cert preferred.

Qualifications

• Bachelor’s degree in CS, CE, or related field.
• 5+ years administering enterprise Linux environments.
• Experience with Ansible automation.
• Experience with VMware vSphere.
• Knowledge of SSH, DNS, TCP/IP, and firewalls.
• DoD 8140 certification or equivalent desired.

Responsibilities

• Install, configure, and maintain Linux clients and servers.
• Perform patch management and security hardening.
• Manage access via AD/LDAP.
• Develop automation scripts with Bash, Python, Ansible.
• Create and maintain system documentation.
• Coordinate outages and changes with teams.

Skills

Linux admin

Ansible automation

VMware vSphere

SSH/Networking

Security hardening

Documentation

Education

Bachelor's degree in CS/ENG

Tools

Git

CI/CD pipelines

Bitbucket

GitLab

VMware vSphere

Job description

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*This represents the potential salary range for this position depending on education level, years of experience and/or certifications in addition to other position specific requirements which may impact salary

Position Overview

The Riverside Research Information Technology team is seeking a highly skilled and experienced Linux System Administrator to support teams that deploy software products to Department of Defense and Intelligence Community networks. The Linux System Administrator is responsible for the installation, configuration, maintenance, security, and performance of Linux-based systems and services across the enterprise environment. This role requires strong troubleshooting skills, experience with automation, and the ability to work effectively in a fast-paced environment supporting critical business systems. This position is located at the Beavercreek, Ohio office and is a short-term position ending in December 2026.

Key Responsibilities

• Install, configure, maintain, and support Linux clients and servers in physical and virtual environments, ensuring high availability and security compliance.
• Manage Linux operating systems, including Red Hat Enterprise Linux, Rocky Linux, Ubuntu, and other enterprise distributions.
• Perform operating system upgrades, patch management, and security hardening.
• Apply security updates and patches to Linux operating systems.
• Manage user access integrated with Active Directory, LDAP, or other identity management solutions.

Troubleshooting, Monitoring, and Recovery

• Troubleshoot and resolve server, application, storage, and network-related issues.
• Monitor operations and applications using Linux-based logging and monitoring tools to diagnose and resolve performance issues.
• Remediate periodic compliance scans.
• Repair and recover from hardware or software failures.

Automation and Technical Documentation

• Develop and maintain automation scripts using Bash, Python, Ansible, or similar tools.
• Create and maintain technical documentation, standard operating procedures, and system diagrams.

Coordination and Communication

• Coordinate with Tier 3 functional roles within the information technology team as needed.
• Coordinate and communicate significant information technology changes and outages with appropriate parties, including the customer, management, and information security.
• Perform other duties as assigned.

Qualifications

Education

• Bachelor’s degree in Computer Science, Computer Engineering, Software Engineering, or another related field of study.

Experience

• 5+ years of experience administering enterprise Linux environments.
• Strong, verifiable experience in Linux system administration, including configuration, patching, user management, and security hardening.
• Experience with automation using Ansible or similar tools.
• Experience with virtualization technologies such as VMware vSphere.
• Knowledge of SSH, SCP, TCP/IP networking, DNS, DHCP, and firewall concepts.

Skills

• Self-motivated, detail-oriented, and responsible team player able to work independently with minimal daily direction.
• Effective and efficient written and verbal communication skills.
• Ability to work and interact with technically and organizationally diverse personnel.

Certifications

• DoD 8140 Intermediate Certification, such as CompTIA Security+ or equivalent.

Preferred Qualifications

• At least 5 years of experience performing systems administration.
• Experience across the traditional IT stack, including clients, networking, servers, and storage.
• Familiarity with enterprise PKI, SSL/TLS certificates, and security compliance frameworks.
• Experience with Git, CI/CD pipelines, and DevOps practices.
• Experience applying STIGs or CIS Benchmarks to Linux operating systems, Windows operating systems, network devices, ESXi hosts, or required applications.
• Experience building systems and maintaining tools such as Bitbucket, Bamboo, GitLab, or similar tools.
• Experience working or developing in multi-domain, multi-cloud, or hybrid-cloud environments.