System & Network Administrator

About this Position

Title:

System & Network Administrator

Department:
Information Technology

Reports to:

Information Technology Manager

Rochester Precision Optics, LLC is seeking a Systems & Network Administrator to support and operate the company’s core IT infrastructure within a regulated manufacturing environment. This role is responsible for the administration and operational stability of server, network, cloud, and enterprise infrastructure platforms supporting approximately 300 users across corporate and manufacturing operations. The Systems & Network Administrator works closely with the IT Manager to maintain a secure, reliable and compliant infrastructure, including implementation of technical controls aligned with NIST 800-171 and CMMC 2.0 requirements.

This is a hands‑on role where the successful candidate will take ownership of infrastructure operations, contribute to the ongoing improvement and modernization of the organization’s infrastructure platforms, and serve as an escalation resource for complex technical issues.

Infrastructure & Systems Administration

• Administer and maintain Windows Server environments and enterprise infrastructure systems
• Manage Active Directory, DNS, DHCP, Group Policy, and identity infrastructure
• Support virtualization platforms such as VMware or Hyper‑V
• Provision and maintain virtual machines and server resources
• Monitor infrastructure performance, system capacity and service availability
• Perform patch management and security updates for servers and infrastructure systems
• Maintain file services, storage systems and system health monitoring
• Administer enterprise backup platforms and validate backup integrity through periodic recovery testing
• Administer enterprise software deployment platforms including PDQ Deploy and related deployment tooling
• Create and maintain standardized software deployment packages for enterprise applications and operating system updates
• Coordinate controlled rollout of software updates and application upgrades across managed systems
• Maintain infrastructure documentation including system configuration standards and architecture diagrams

Network Infrastructure Administration

• Maintain & support network infrastructure including switches, firewalls, VPN, and wireless networks
• Configure and support VLANs, routing and subnetting
• Configure and maintain firewall policies, access rules and network security controls
• Maintain network authentication systems supporting secure wired and wireless access
• Support VoIP and network‑connected infrastructure including cameras and related technologies
• Maintain and troubleshoot DNS, DHCP, routing and other core network services
• Support structured cabling, patch panel management and infrastructure expansion projects
• Maintain network diagrams, segmentation documentation and infrastructure configuration records

Microsoft 365 GCC High Administration

• Administer Microsoft 365 GCC High tenant services including Exchange Online, Microsoft Teams and Entra
• Configure and maintain Conditional Access policies and secure authentication configurations
• Support identity lifecycle integration between on‑premises Active Directory and Entra
• Provide Tier 2/3 escalation support for advanced Exchange Online and Teams issues
• Assist with Microsoft Purview administration including eDiscovery searches, retention policies and litigation hold support
• Maintain secure messaging and collaboration configurations aligned with regulatory requirements

Endpoint & Mobile Device Management Platform Administration

• Administer enterprise device management platforms including Microsoft Intune and Endpoint Central
• Configure and maintain device enrollment policies, compliance policies and security baselines
• Integrate device compliance enforcement with Conditional Access authentication policies
• Provide Tier 3 escalation support for complex endpoint and mobile device management issues
• Support device security posture aligned with organizational security and compliance requirements
• Maintain backend infrastructure supporting enterprise applications including ERP, SQL Server and File Maker hosting environments
• Support infrastructure stability for unified communications…