IT Systems Administrator — On-Call, Cloud & Security

1rti; Milton, Northern (Northumberland County, KY); Hybrid; USD 85,000 - 110,000; Full time

Benefits offered by this job

401(k) with match

Medical, dental, vision

Paid holidays & generous PTO

Job summary

1rti is seeking a motivated IT Systems Administrator to join our internal IT team. You will support end users, administer on-premises and cloud systems, and help maintain secure, scalable infrastructure.

The ideal candidate enjoys solving problems across Windows, Linux, networking, cloud, and cybersecurity. Will participate in on-call rotation, travel periodically, and install server, storage, and networking gear.

Qualifications

• 3+ years of experience in IT administration, systems administration, or related roles.
• Strong working knowledge of Windows desktop and server OS and Linux administration.
• Experience administering Microsoft 365, Entra ID, and Microsoft Azure services.
• Working knowledge of TCP/IP, DNS, DHCP, VLANs, routing, and switching.
• Understanding of firewalls, VPNs, wireless networking, and network security concepts.
• Experience troubleshooting computer hardware, software, OS, and network issues.
• Strong customer service, communication, documentation, and problem-solving skills.
• Ability to work independently, prioritize competing needs, and collaborate with a team.
• Valid driver’s license and ability to travel when required.
• Must pass drug screening and background check

Responsibilities

• Provide end-user and help desk support.
• Troubleshoot hardware, software, identity, access, connectivity, and system issues.
• Respond to requests via ticketing, email, phone, chat, and deskside support.
• Configure and deploy desktops, laptops, mobile devices, peripherals, and business software.
• Create and maintain technical documentation and knowledge base articles.
• Train users on technology best practices and security awareness.
• Administer Windows Server, Windows desktop, and Linux environments.
• Manage Microsoft 365, Entra ID, Exchange Online, Teams, SharePoint, and related services.
• Administer Microsoft Azure resources, identity, access controls, and cloud security configurations.
• Perform maintenance, patching, monitoring, upgrades, and lifecycle management.
• Support backups, recovery testing, business continuity, virtualization, and server deployments.
• Monitor system availability, performance, capacity, and cloud cost trends.
• Configure and troubleshoot switches, firewalls, wireless networks, VPNs, and related infrastructure.
• Support TCP/IP, DNS, DHCP, VLANs, routing, switching, LAN, WAN, and internet connectivity.
• Assist with cybersecurity monitoring, vulnerability remediation, access reviews, and incident response.
• Maintain accurate network documentation, diagrams, inventories, and configuration standards.
• Install, rack, cable, and maintain servers, storage, UPS systems, and networking equipment.
• Participate in infrastructure upgrades, equipment refreshes, migrations, and technology deployments.
• Assist with capacity planning, storage planning, infrastructure design, and technology roadmaps.
• Coordinate with vendors, service providers, and internal stakeholders as needed.

Skills

Windows OS

Linux

Microsoft 365

Entra ID

Azure

Networking basics

Firewalls & VPNs

Troubleshooting

Documentation

Travel readiness

Tools

VMware

Hyper-V

SQL Server

MySQL

MariaDB

PostgreSQL

IIS

Apache

NGINX

PowerShell

Bash

Python

Job description

1rti is seeking a motivated IT Systems Administrator to join our internal IT team. You will support end users, administer on-premises and cloud systems, and help maintain secure, scalable infrastructure.

The ideal candidate enjoys solving problems across Windows, Linux, networking, cloud, and cybersecurity. Will participate in on-call rotation, travel periodically, and install server, storage, and networking gear.