Find & Apply For Network / Systems Administrator Jobs in New Castle, Pennsylvania

We are looking for an experienced Network Administrator III to support and enhance a complex manufacturing technology environment in New Castle, Pennsylvania. This role is responsible for maintaining reliable infrastructure across multiple locations, with a focus on network performance, systems stability, and secure access to critical business services. The ideal candidate brings advanced technical depth across enterprise platforms and a practical approach to improving uptime, scalability, and operational resilience.

Responsibilities:

• Manage enterprise network and infrastructure operations across multiple sites, ensuring dependable connectivity, performance, and availability.
• Administer core technologies including Cisco-based networking, servers, virtualization platforms, cloud-connected services, and security tools.
• Maintain and optimize VMware environments, storage systems, and Microsoft enterprise platforms such as Active Directory and Office 365.
• Strengthen infrastructure security by configuring firewalls, applying hardening standards, and supporting identity and access management controls.
• Oversee backup and recovery processes to protect business-critical systems and improve disaster readiness.
• Troubleshoot escalated infrastructure issues, identify root causes, and implement lasting technical solutions.
• Support hybrid and cloud integrations that extend enterprise services while maintaining compliance and operational efficiency.
• Contribute to unified communications administration, including platforms such as Cisco Call Manager, when needed.
• Bachelor's degree in Computer Science, Information Technology, or a comparable combination of education and relevant experience.
• At least 7 years of experience supporting enterprise infrastructure in multi-site environments.
• Minimum 5 years of hands-on work with VMware, enterprise storage platforms, and Microsoft technologies, including Office 365 and hybrid cloud connectivity.
• Strong knowledge of firewall administration, security best practices, backup solutions, and identity management.
• Experience managing Cisco routers, Cisco networking, and LAN environments within an enterprise setting.
• Demonstrated background in Active Directory administration and support of cloud-based business services.
• Exposure to Cisco Call Manager or other unified communications systems is preferred.

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