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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network LAN Engineer - **Company:** Tata Consultancy Services Limited - **Location:** Liberty County, TX, United States - **Salary:** $80,000.0 - $90,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Access, Link Aggregation (Ethernet), Border Gateway Protocol, Spanning Tree Protocols, Cloud Computing, Configuration Management, Computer Networks, System Configuration, Data Centers, Dynamic Host Configuration Protocol, Domain Name System (DNS), Ethernet, Enhanced Interior Gateway Routing Protocol, Trunking, Fiber Channel over Ethernet, Firmware, Hot Standby Router Protocol, Networking Hardware, IP Addressing, Internet Protocol, IPv4, IPv6, Internet Services, Subnetting, Multi-protocol Systems, Internet Service Provider, Local Area Networks, Network Security, Network Troubleshooting, Nagios, Network Configuration and Change Management, Network Architecture, Network Installation Services, Routing, Network Segmentation, Network Administration, Cisco Nexus Switches, Open Shortest Path First (OSPF), Overlay Transport Virtualization, Cloud Services, Server Administration, Virtual Local Area Networks, Virtual Router Redundancy Protocols, Network Switches, Network Routing, Network Routers, VLAN Trunking Protocol (VTP), Computer Networking Systems, Identity Services Engine, Load Balancing, Computer Network Operations, Connectivity Problems, System Availability, Firewalls (Computer Science), Amazon Virtual Private Cloud (VPC), Data Center Networking, Network Support, Routing & Switching, Cisco Switches, Cisco, Pagerduty - **Published:** September 28, 2026 - **Apply:** https://www.careerbuilder.com/job-details/network-lan-engineer-liberty-nc--2038b694-5f53-47c8-a35a-779d5985ef56 ## About the Role Must Have Technical/Functional Skills Strong knowledge in Switching technologies - Tenant, VRFs, BDs, EPGs, VXLAN, STP, Trunking, Ether channel, HSRP, VRRP, LACP, PaGP, BGP, OSPF, MP-BGP Switching Models Nexus 9K, 7K, 5K, 2K, VPC, FEX, VDC, Cisco VSS, VPC, Cisco Catalyst 6800, 6500, 4500, 3800, 3500 2900 with stacking. Deep understanding of Internet Protocol (IP) addressing and Variable Length Subnet Mask (VLSM). Extensive experience on designing and implementing Cisco ACI, SDA (Software-Defined Access), DNAC with Data Center Networking Technologies and Cloud Solutions. Strong experience with Monitoring and Alerting Tools: * Cisco APIC/ACI, Nexus Dashboard, Cisco DNAC, Cisco ISE, PagerDuty, Nagios & Thousand Eyes. * CCNP Certified (Routing & Switching) & Higher * Strong knowledge on Cisco Data Center with ACI environment (Single/Multi Pod) * Expert Knowledge of LAN switching technologies: STP, Trunking, Ether channel and good understanding of high availability fundamentals (HSRP and VRRP) * Good understanding of Local Area Network (LAN) switching technologies including ACI, APIC, VXLAN, fabric path, SDA, DNAC, ISE, Spanning Tree, Virtual LAN (VLAN), and VLAN Trunking Protocol (VTP) concepts. * Good hands-on experience on the load balancing concepts like - LACP, PaGP * Strong hands-on work experience with Cisco Nexus 9K, 7K, 5K, 2K devices, Cisco Catalyst 9K, 3K & 4K series. * Experience in designing, deploying, and troubleshooting VSS, VDC, VPC, OTV, Fabric path, FCoE and multi-tenancy in the datacenter. * Deep understanding of Internet Protocol (IP) addressing and Variable Length Subnet Mask (VLSM). * Good understanding of DHCP, DNS - Hands-on experience & troubleshooting knowledge on Infoblox. * Troubleshooting network link/device hardware/configuration issues, isolating the problem, fixing the problem * Install, configure, and support large-scale production and corporate network infrastructure including routers, switches, console servers and equipment. * Schedule and perform network maintenance, repair, and upgrade tasks as needed while limiting the impact on the production network. * Very strong Layer 2 & 3 Networking skills solid BGP, IPV4, IPv6, Change management. * Troubleshooting the routing protocols like BGP, EIGRP, Static and OSPF and work with the ISPs and internal teams to resolve the issues. * Experience working on CoS, QoS, WRED and related quality of service parameters. * Working knowledge on MPLS, Metro Ethernet and Hub & Spoke concepts, Automation, BGP Routing Protocol, CCNP - Cisco Certified Network Professional, Change Management, Cisco Catalyst Switches, Cisco Network Systems, Cisco Nexus Switches, Cloud Computing, CoS (Class of Service), Computer Firmware, Computer Networks, DHCP (Dynamic Host Configuration Protocol), DNS (Domain Name System), EIGRP (Enhanced IGRP), Enterprise Protection, Ethernet, Financial Control, Firewalls, HSRP (Hot Standby Router Protocol), Hardware Configuration Management, High Availability, IP (Internet Protocol), IP Addressing, IPv4, IPv6, Identify Issues, Internet Service Providers, Legal, Load Balancing, Loan Funding, Local Area Network (LAN), MPLS (Multi-Protocol Label Switching), Maintenance Services, Nagios Monitoring Tool, Network Administration/Management, Network Configuration Management, Network Operations Center, Network Performance/Analysis, Network Routers, Network Routing, Network Security, Network Support, Network Switching, Network System Hardware, Open Shortest Path First Protocol (OSPF), Operational Support, Performance Analysis, Performance Management, Problem Solving Skills, Purchasing/Procurement, QoS (Quality of Service), Reporting Dashboards, Software Administration, Software Upgrades, Spanning Tree Protocols, Student Loans, Subnet, VLAN (Virtual Local Area Network), VLAN Trunking Protocol (VTP), VRRP (Virtual Router Redundancy Protocol) ## Description 1. Provide operations support for Enterprise LAN, Security, Data Center, and Campus Network platforms across North America locations. 2. Installing, configuring, and supporting network equipment including Switches & Routers using APIC & DNAC tool. 3. Configuration and Operational support experience with Cisco ACI - Spine-leaf switches, APIC and APIC-EM controller, Nexus switches. 4. Resolve connectivity problems between applications, EPGs, and external networks. 5. Diagnose routing, contracts, and endpoint learning issues. 6. Maintain external connections (L3Out, firewalls, load balancers) and Apply micro segmentation and policy rules. 7. Add or update ACI objects (tenants, VRFs, bridge domains, EPGs, contracts). 8. Deep understanding of network orchestration and automation using Cisco ACI/APIC, SDA & DNAC with ISE integration. 9. Procuring network equipment and managing subcontractors involved with network installation. 10. Configuring routing and switching to maximize network efficiency and security. 11. Supervise and or performing site installs, maintenance, upgrades or software enhancements to support the network infrastructure needs. 12. Plan and execute APIC and switch firmware upgrades. 13. Function as a point of escalation for operational entities regarding regular or complex issues. 14. Maximizing network performance through ongoing monitoring and troubleshooting 15. Investigating faults in the network 16. Resolve incidents/problems/Changes according to established procedures. 17. Work on Service improvement activities and completing it within the target dates. 18. Explore & Support automation where possible. 19. Work closely with customer, Infrastructure teams and vendors such as Cisco. 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