Network/Systems Administrator

Description
We are looking for a Network/Systems Administrator to provide onsite support for core infrastructure operations in Chicago, Illinois. This Long-term Contract position focuses on keeping server, virtualization, storage, and network environments stable, secure, and well maintained while partnering with technical teams to resolve issues efficiently. The ideal candidate brings practical experience across VMware, Cisco networking, enterprise storage, and physical cabling, along with a dependable, hands-on approach to day-to-day infrastructure support.

Responsibilities

Manage virtual infrastructure by supporting VMware hosts, clusters, virtual machines, and associated platform components. Track system health, investigate performance concerns, and carry out scheduled maintenance such as patching, upgrades, backups, and operational checks. Provide administration for enterprise storage platforms, including monitoring utilization, addressing connectivity issues, and assisting with performance tuning. Configure and troubleshoot Cisco network equipment, including switch ports, VLAN assignments, and general LAN connectivity.

Install and maintain copper and fiber cabling by tracing lines, labeling connections, organizing runs, and resolving physical network issues. Perform hardware deployment tasks such as rack installation, equipment replacement, and upkeep of server rooms or network closets. Diagnose infrastructure problems affecting servers, storage, network services, and user connectivity, escalating complex issues when needed. Keep technical records current by updating diagrams, asset inventories, procedural documentation, and change history.

Follow established security standards, operational procedures, and change-control practices while coordinating with infrastructure, security, application, and support teams. Requirements
Experience supporting Windows-based server environments, networking, and virtual infrastructure in an enterprise setting. Hands-on knowledge of VMware technologies, including vSphere, ESXi, and vCenter. Familiarity with enterprise storage systems and the ability to assist with administration and troubleshooting.

Working understanding of Cisco networking concepts, including switching, routing, VLANs, and LAN connectivity. Practical experience installing and troubleshooting both Ethernet and fiber-optic cabling. Strong analytical and troubleshooting ability with a consistent, task-oriented approach to technical support. Clear communication skills and the ability to document work accurately while collaborating with multiple teams. Willingness and ability to work onsite four days per week and handle physical equipment setup as needed. 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. Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster. 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.

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