Linux Systems Administrator (Temporary)

Riverside Research; Beavercreek (OH); On-site; USD 90,000 - 120,000; Full time

Job summary

Riverside Research in Beavercreek, OH is seeking a highly skilled Linux System Administrator for a temporary role ending in December. You will install, configure, and maintain Linux-based systems across our enterprise environment supporting DoD and IC networks.

Responsibilities include patch management, security hardening, automation scripting with Bash, Python, Ansible, and integrating with Identity solutions.

Qualifications

• 5+ years of enterprise Linux administration experience.
• DoD 8140 - Intermediate Certification (Security+ or equivalent).
• Strong Linux configuration, patching and security hardening experience.
• Automation experience with Ansible or similar tools.

Responsibilities

• Install, configure, maintain and support Linux servers in physical/virtual environments.
• Manage RHEL, Rocky Linux, Ubuntu and other enterprise distributions.
• Perform OS upgrades, patching, security hardening.
• Troubleshoot server, application, storage and network issues.
• Develop automation scripts using Bash, Python, Ansible or similar.
• Manage user access with AD/LDAP and other identities.
• Monitor operations with Linux logging/monitoring tools and diagnose performance issues.
• Create/update documentation and SOPs; maintain system diagrams.
• Apply security updates/patches; remediate compliance scans.
• Recover from hardware or software failures; coordinate IT changes.

Skills

Linux system administration

Automation scripting

Team collaboration

Problem solving

Education

Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or related field

DoD 8140 - Intermediate Certification (CompTIA Security+ or equivalent)

Tools

Ansible

VMware vSphere

Git

CI/CD pipelines

Bitbucket

Bamboo

GitLab

Job description

Linux Systems Administrator (Temporary)

2026-4283

Category: Information Technology

Position Type: Full Time Salary

Riverside Overview

Riverside Research is an independent National Security Nonprofit dedicated to research and development in the national interest. We provide high-end technical services, research and development, and prototype solutions to some of the country's most challenging technical problems.

All Riverside Research opportunities require U.S. Citizenship.

Position Overview

The Riverside Research Information Technology (IT) team is seeking a highly skilled and experienced Linux System Administrator to support teams within the company that deploy software products to Department of Defense (DoD) and Intelligence Community (IC) networks. The ideal candidate will be responsible for the installation, configuration, maintenance, security, and performance of Linux-based systems and services across our 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 is an excellent opportunity for someone who is passionate about delivering valuable solutions to users and has a keen sense of efficiency, reliability, and security. This position is located at our Beavercreek, OH office.

This is a short term position that will end in December.

Responsibilities

• Installing, configuring, maintaining and supporting Linux clients/servers in physical and virtual environments, ensuring high availability and security compliance.
• Managing Linux operating systems including Red Hat Enterprise Linux (RHEL), Rocky Linux, Ubuntu, and other enterprise distributions.
• Performing operating system upgrades, patch management, and security hardening.
• Troubleshooting and resolving server, application, storage, and network-related issues.
• Developing and maintaining automation scripts using Bash, Python, Ansible, or similar tools.
• Managing user access integrated with Active Directory, LDAP, or other identity management solutions.
• Monitoring operations and applications, including using Linux-based logging and monitoring tools to diagnose and resolve performance issues.
• Creating and maintaining technical documentation, standard operating procedures, and system diagrams.
• Apply security updates/patches to Linux operating systems
• Remediating periodic compliance scans
• Repair and recover from hardware or software failures
• Coordinate with tier 3 functional roles within the information technology team as needed
• Coordinate and communicate all significant information technology changes/outages with the appropriate parties such as the customer, management, and information security
• Other duties as assigned

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or other related field of study
• 5+ years of experience administering enterprise Linux environments.
• DoD 8140 - Intermediate Certification (CompTIA Security+ or equivalent).
• Strong, verifiable experience in Linux system administration, including configuration, patching, user management, and security hardening
• Experience in automation with Ansible or similar tools
• Experience with virtualization technologies such as VMware vSphere
• Experience working on deployment environments including virtual machines
• Knowledge of SSH, SCP, TCP/IP networking, DNS, DHCP and firewalls concepts.
• Self-motivated, detail oriented, responsible team player able to work independently with minimal daily direction; effective/efficient written/verbal communication skills
• Ability to work and interact with technically and organizationally diverse personnel

Desired Qualifications:

• Seeking a candidate that has at least 5 years' experience performing systems administration
• Experience across traditional IT stack (Clients, Networking, Servers, Storage)
• Familiarity with enterprise PKI, SSL/TLS certificates, and security compliance frameworks.
• Experience with Git, CI/CD pipelines, and DevOps practices.
• Has applied STIGS or CIS Benchmarks to Linux operating systems, Windows operating systems, network devices, ESXi hosts, or required applications.
• Experience with building systems and maintaining tools such as Bitbucket, Bamboo, GitLab, etc.
• Experience working/developing in multi-domain, multi-cloud, hybrid-cloud environments

Global Comp

$0.0000 - $0.00000 This represents the typical compensation range for this position based on experience, location and other factors.

Closing Statement

Riverside Research Institute is a not-for-profit, technology-oriented defense company, where service to our customers and support of our staff is our overall mission. Riverside is an affirmative action-equal opportunity employer and complies with all applicable federal, state, and local laws regarding recruitment and hiring. Riverside offers comprehensive compensation and benefit packages to our employees.

Riverside bases its employment decisions solely on technical experience, qualifications and other job-related criteria related to our organizational purpose as a not-for-profit company, and without regard to race, color, religion, age, sex marital status, sexual orientation, national origin, physical or mental disability, veteran's status or any other status legally protected by applicable federal, state, and local law.