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. Technology Doesn't Change the World, People Do. ® Robert Half is the world's first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking "Apply Now," you're agreeing to Robert Half's Terms of Use and Privacy Notice .