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# Network Systems Administrator III

- **Company:** Iridium Satellite, LLC
- **Location:** McLean, VA, United States
- **Experience:** Expert
- **Salary:** $95,000.0 - $125,000.0
- **Contract:** Permanent contract
- **Skills:** Multitier Architecture, Microsoft Windows, Active Directory, Application Layers, Software System Penetration Testing, Systems Engineering, User Authentication, Ubuntu (Operating System), CentOS, Cisco IOS, Configuration Management, Collaborative Software, System Configuration, Customer Data Management, Linux, Disaster Recovery, Issue Tracking Systems, Internet Protocol, OSI Models, Lightweight Directory Access Protocols (LDAP), Windows Servers, Network Configuration and Change Management, Red Hat Enterprise Linux, Ansible, Software Vulnerability Management, Computer Networking Systems, Juniper Os, Comptia Server+, Information Technology, Puppet
- **Published:** October 3, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9215155/network-systems-administrator-iii

## About the Role

If you are an experienced Network Systems Administrator with strong Linux/Windows and security-focused infrastructure skills, you will be excited about the Network Systems Administrator opening on Aireon's Network Engineering team. As a Network Systems Administrator, you'll independently deliver high-quality work and drive system deployment, hardening, and sustainment activities to completion for Aireon's on-premises operational networks that distribute data to customers. In this role, you will focus primarily on secure build and patch lifecycle management, centralized authentication, automation, and Tier II/III operational support. You will thrive in this role if you communicate proactively, collaborate effectively across distributed teams, and bring a strong ownership mindset in a fast-paced operational environment., * Bachelor's degree in Computer Science, Engineering, Information Technology, or related field OR equivalent relevant experience in lieu of degree.

 * 5+ years of professional systems administration and/or IT engineering experience supporting Linux and Windows environments in a security-conscious operational setting.
 * Demonstrated hands-on experience installing, configuring, administering, and troubleshooting Linux and Windows systems.
 * Hands-on experience with OS hardening, patching, vulnerability remediation, and security controls at the OS and application layers.
 * Working knowledge of Internet protocols, OS/network configuration, and general IP networking concepts (OSI Layer 2/3).
 * Experience administering centralized authentication services (AD/LDAP) and troubleshooting authentication and access issues.

Things That Would be Great if You Brought to the Table:

 * Experience with virtualization and containers.
 * General knowledge of Cisco IOS and/or Juniper OS.
 * Experience conducting or supporting network and system-level penetration testing and/or security validation activities.
 * Experience working in a configuration-managed operational environment with rigorous security controls.
 * Relevant certifications (preferred): RHCSA, RHCE, Windows Server Hybrid Administrator Associate, CompTIA Server+.
 * Familiarity with ticketing systems, issue tracking, and collaboration tools.

Work Environment:

This position primarily works in an office setting and is largely sedentary with the majority of the position working with a computer. The role typically requires the use of basic office equipment such as a phone, video, computer, keyboard, mouse, and printer.

We believe in-person connection drives innovation, strengthens mentorship, and builds culture, while flexibility enables employees to do their best work. Under Iridium's Hybrid Work Policy, employees are expected to work at least four days per week (approximately 80%) in an Iridium office to support collaboration, relationship-building, and professional growth.

## Description

* Design, implement, and maintain operational, test, and development infrastructure to support Aireon's on-premises operational networks and customer data distribution.
 * Install, configure, harden, and patch Linux (RHEL/CentOS/Ubuntu) and Windows systems in accordance with established security controls and stringent security requirements.
 * Implement and maintain automation for system administration activities using tools such as Ansible and/or Puppet to improve consistency, reliability, and auditability.
 * Administer and support centralized authentication solutions (e.g., Active Directory/LDAP) and resolve authentication-related incidents and change requests.
 * Provide Tier II/III operational support for escalated system and network-layer security incidents; perform root cause analysis and coordinate resolution with vendors, engineering, security, and subcontractors.
 * Maintain continuous monitoring of system resources and security posture, including configuration management, inventory/license/asset tracking, backups, off-site archives, disaster recovery readiness, and patch/update compliance.
 * Collect and evaluate performance data to identify systemic issues, tune systems, and ensure adequate capacity, resilience, redundancy, and performance.