Senior IT Infrastructure Administrator – On-Site

Twin Oaks Technology, LLC; Union City (TN); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Health, vision, and dental insurance

401(k)

Paid time off

Life insurance

SIMPLE IRA

Bonus pay potential

Job summary

Twin Oaks Technology, LLC is seeking an IT Infrastructure Administrator to support and maintain client environments in Union City, TN. The role requires deep knowledge across networking, Windows Server, virtualization, and cloud services, with the ability to diagnose issues across diverse client setups.

You will deploy, configure, and manage networks, AD, M365, VPNs, and backup solutions while documenting configurations and SOPs. On-site work five days a week.

Qualifications

• 7+ years of hands-on experience in network and systems administration.
• Strong knowledge of Networking: TCP/IP, VLANs, routing, switching, firewall configuration; Windows Server 2016/2019/2022, Active Directory, Group Policy; Microsoft 365 and Azure AD administration; Virtualization (VMware and/or Hyper-V); Backup and disaster recovery solutions.
• Experience using RMM tools and ticketing systems in a service-based environment; ability to troubleshoot across multiple layers (network, system, application).
• Strong documentation habits and organizational skills.

Responsibilities

• Deploy, configure, and maintain network and systems infrastructure across multiple client environments.
• Troubleshoot and resolve escalated issues involving networking, servers, virtualization, and cloud services.
• Configure and manage firewalls, VPNs, switches, and wireless infrastructure.
• Administer Windows Server environments, including Active Directory, Group Policy, DNS, and DHCP.
• Manage and support Microsoft 365 environments (Exchange Online, Azure AD, user and security management).
• Support virtualization platforms (Hyper-V, VMware), including provisioning and maintenance of virtual machines.
• Implement and maintain backup and disaster recovery solutions.
• Monitor system health, performance, and security using RMM and monitoring tools.
• Work with vendors to resolve issues and support deployments.
• Document network diagrams, configurations, and SOPs.
• Assist with project work, including migrations, upgrades, and new client onboarding.

Skills

Networking

Windows Server

Active Directory

Microsoft 365

Azure AD

VMware

Hyper-V

RMM tools

Documentation

Cybersecurity

Communication

Tools

RMM tools

Ticketing systems

Job description

Twin Oaks Technology, LLC is seeking an IT Infrastructure Administrator to support and maintain client environments in Union City, TN. The role requires deep knowledge across networking, Windows Server, virtualization, and cloud services, with the ability to diagnose issues across diverse client setups.

You will deploy, configure, and manage networks, AD, M365, VPNs, and backup solutions while documenting configurations and SOPs. On-site work five days a week.