Senior Network Engineer

Job Title: Technical Infrastructure & Network Engineer (Computer-Aided Dispatch & Mobile Data System)Location: Chicago, IL (onsite)Duration: 6+ Months Only local candidatesOnly w2 or 1099 candidates.U.S. Citizens and Green Card holders are preferred.Required Skills & Qualifications:Network Engineering: Deep expertise in enterprise networking, particularly with Cisco Nexus switches (NX-OS) and configuring routing protocols, VLANs, subnet masks, and redundancy in a high-availability environment.Hardware & Storage: Extensive hands-on experience with enterprise-grade server and storage hardware, specifically Dell PowerEdge blade servers, Dell VxRail appliances, and SAN deployments.Virtualization: Strong proficiency in deploying and managing VMware vSphere, vCenter, High Availability (HA), and Distributed Resource Scheduler (DRS).Systems Administration: Advanced knowledge of Microsoft Windows Server environments, Active Directory, DNS, DHCP, and SSL certificate management.Mobile/Wireless Networking: Experience managing mobile connectivity, including 3G/4G/LTE cellular networks, in-vehicle Cradlepoint routers, and secure mobile VPN software (e.g., NetMotion).Mission-Critical Experience: Proven ability to deploy and maintain infrastructure in a 24/7/365 life-safety or emergency communications center (PSAP) environment where downtime directly impacts public safety