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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Infrastructure Admin I - **Company:** The Smart - **Location:** Lake Buena Vista, FL, United States (Remote available) - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Proxmox, Microsoft Windows, Active Directory, Amazon Web Services, Microsoft Azure, Backup Devices, Bash Shell, CompTIA Network+, CompTIA Security+, System Configuration, Dynamic Host Configuration Protocol, Domain Name System (DNS), VMware ESX Servers, Failover, Network Topologies, Hyper-V, Identity and Access Management, Networking Hardware, Network Security, Linux System Administration, Linux Servers, Microsoft Servers, Windows Servers, Network Administration, Windows PowerShell, Azure Active Directory, Microsoft SharePoint, Single Sign-On, Virtualization Technology, Software Vulnerability Management, Wireless Access Point, Network Routers, Scripting, Computer Networking Systems, Firewalls (Computer Science), Information Technology, Patch Management, Comptia Linux+, Firewall Services Module, Veeam, Cisco, Vmware - **Published:** November 11, 2026 - **Apply:** https://www.thejobnetwork.com/job/5ef19980-4d0b-487c-a075-854f58d4d350/infrastructure-admin-i ## About the Role * 3-5 years of experience in systems administration, network administration, or IT infrastructure roles * Hands-on experience administering Windows Server environments and Active Directory * Working knowledge of Microsoft 365 administration * Experience with Microsoft Entra ID / Azure AD or similar identity platforms * Experience configuring and troubleshooting Cisco networking equipment * Experience with Ubiquiti networking equipment, or comparable enterprise/prosumer networking gear * Hands-on experience with Hyper-V virtualization * Hands-on experience with Proxmox, or comparable virtualization platforms such as VMware/ESXi * Hands-on Linux administration experience (installation, patching, user/permission management, troubleshooting) * Solid understanding of system and network security fundamentals, including firewalls, access controls, patch management, and vulnerability remediation * Comfort troubleshooting end-user issues and supporting a helpdesk queue when needed * Strong problem-solving skills and the ability to prioritize across competing demands * Clear, courteous communication, with the ability to explain technical issues to non-technical staff and partners Nice to Have * A college degree in Computer Science, Information Technology, or a related field is a plus, but not required; equivalent hands-on experience is valued equally * Relevant certifications: CompTIA Network+/Security+, Cisco CCNA, Microsoft Certified: Azure Administrator Associate, CompTIA Linux+/LPIC, or similar * Experience with backup solutions (Veeam, Datto, etc.) * Scripting/automation experience (PowerShell, Bash) * Experience with cloud platforms beyond Microsoft (AWS, GCP) * Prior experience in a lean IT team wearing multiple hats ## Description The Infrastructure Administrator helps maintain and evolve our core IT environment, from Microsoft server infrastructure and cloud identity to network hardware and virtualization platforms. This role combines hands-on technical ownership with day-to-day support, jumping into helpdesk escalations whenever the team needs an extra set of hands. We instill confidence every day by delivering reliable solutions and brilliant service, and this role is central to keeping that promise on the infrastructure side of our business. What the Role Involves * Administering and maintaining Microsoft Windows Server environments, including Active Directory, Group Policy, DNS/DHCP, and file/print services * Managing Microsoft 365 administration, including Exchange Online, SharePoint, Teams, licensing, and security/compliance policies * Administering Microsoft Entra ID (Azure AD), including identity management, conditional access, SSO, and hybrid identity synchronization * Configuring, maintaining, and troubleshooting Cisco networking equipment (switches, routers, firewalls) * Configuring, maintaining, and troubleshooting Ubiquiti networking equipment (UniFi switches, access points, gateways) * Managing a Hyper-V virtualization environment, including VM provisioning, resource allocation, backups, and failover planning * Managing a Proxmox virtualization environment, including VM/container provisioning and maintenance * Administering and maintaining Linux servers, including installation, configuration, patching, and routine maintenance * Implementing and maintaining system and network security controls, including firewall rules, access controls, endpoint protection, and vulnerability remediation * Supporting infrastructure upgrades, patching cycles, and capacity planning * Maintaining backup and disaster recovery processes across server and virtualization environments * Monitoring system health, network performance, and security posture across the environment * Documenting infrastructure configurations, network topology, and standard operating procedures * Assisting with helpdesk tickets by providing hands-on support for hardware, software, and connectivity issues alongside the support team * Evaluating new tools, vendors, and technologies that improve infrastructure reliability and efficiency