Information Technology System Administrator

Overview

Jr Systems IT Administrator - Chandler, AZ (Onsite) CMMC/NIST 171 Support

RAJANT CORPORATION, the 20+-year leader in industrial wireless patented Kinetic Mesh networking solutions, is redefining real-time connectivity with resilient Smart Routing technology, ensuring secure, dynamic, and uninterrupted data flow for industrial autonomous and mobile operations across various industries.

From robotic and vehicle autonomy to asset tracking, health and environmental monitoring, smart lighting, BMS, and industrial automation, Rajant’s military-grade secure, AI-powered wireless mesh networks deliver adaptive, always-on connectivity for high-stakes environments. Rajant's mission-critical systems are in use by indoor and outdoor industries such as Warehouse and Factory Automation, Robotics, IIoT, Mining, Rail, Ports, Energy, tunnel and underground communications.

Position Summary: Join Rajant’s enterprise IT team to support our Chandler, AZ development site and collaborate daily with our Malvern, PA headquarters. This is a junior systems administration role in scope and escalation level, not an entry-level IT position.

You’ll handle helpdesk/remote support, administer Windows & Linux (Ubuntu) environments, and execute routine security/compliance tasks aligned with NIST SP 800-171/CMMC. This role is hands on, documentation heavy, and process driven.

This position will also require the selected candidate to apply for a US Secret security level clearance.

End User Support & Operations

• Triage & resolve tickets onsite & remotely via company approved tools; own issues through resolution & document for internal knowledge base.
• Provision, image, and maintain end user workstations.
• Support printers/peripherals; manage break/fix, RMAs, and spares.

Systems & Identity Administration

• Manage & administer Windows-based systems, Active Directory authenticated Ubuntu Linux systems (user access, patching, services, troubleshooting).
• Support Google Workspace and Microsoft 365 (account lifecycle, management, troubleshooting).
• Collaborate with the IT team to maintain security, performance, and compliance across systems.

Other System Administration

• Administer Ubuntu Linux systems used by engineering and development teams.
• Perform user and group management, permissions, package management (apt), and patching.
• Troubleshoot Linux OS, service, and performance issues using CLI tools.
• Assist with system hardening and configuration in alignment with security baselines.

• Perform basic switch/WiFi tasks (port/VLAN changes under SOP), cabling, and small rack work; coordinate with Malvern for firewall/VPN changes via change control.

• Run monthly checks & capture evidence: patch compliance reports, account recertifications, backup verification, and vulnerability scan scheduling.
• Perform first level SIEM/MDR alert triage and escalate per runbooks.
• Maintain and improve SOPs, system diagrams, and the evidence binder/wiki in coordination with Malvern IT and the FSO.
• Follow change control and least privilege practices; report exceptions.

• Maintain clear and thorough documentation of IT procedures, troubleshooting steps, and user guides.
• Prepare and deliver monthly support and system health reports.

Required:

• Local to Chandler, AZ
• Ability to pass required background checks
• Ability to apply for and obtain a US Secret security level clearance

Education:

• Bachelor’s Degree or certification in IT, Computer Science, or a related field (or equivalent hands-on experience).
• IT certifications (e.g., CompTIA Security+, Google Workspace Administrator) are preferred but not required.

Experience:

• 2+ years in help desk/deskside support or junior systems administration.
• Hands on experience administering Windows 11 and Windows Server 2016+, and at least 1–2 years supporting Ubuntu Linux systems in a professional environment.

Technical

Skills:

• Practical Ubuntu/Linux administration skills including: systemd/service management, user/group permissions, package management (apt).
• Familiarity with remote desktop tools (e.g., Team Viewer, RDP).
• Knowledge of Active…