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Hallmark Global Technologies Inc
New York, United States
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Key Responsibilities
· Design, implement, maintain, and troubleshoot enterprise LAN, WAN, and data center networks.
· Configure and support Cisco, Arista, and Juniper networking equipment.
· Manage TCP/IP, VLANs, STP, OSPF, BGP, VRRP/HSRP, ACLs, NAT, QoS, DNS, DHCP, and VPNs.
· Administer Palo Alto Firewalls including Security Policies, NAT, GlobalProtect, IPSec VPN, HA, URL Filtering, and Threat Prevention.
· Configure and support Arista EOS, MLAG, LACP, Port Channels, Spine-Leaf architecture, and firmware upgrades. VXLAN/EVPN preferred.
· Design and support AWS networking including VPC, Route Tables, Security Groups, Transit Gateway, AWS Direct Connect, Site-to-Site VPN, ALB/NLB, and hybrid connectivity.
· Support Corporate Wi-Fi, Wireless Controllers, Guest Wi-Fi, and 802.1X authentication.
· Support low-latency Market Data Networking including IP Multicast, PIM, IGMP, multicast routing, and exchange connectivity.
· Work with Palo Alto, Arista, Cisco, AWS, ISPs, telecom providers, and market data vendors.
· Participate in production support, incident response, root cause analysis, documentation, and change management
Bachelor's degree
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