Network Engineer L3 support

Responsibilities

• Design, implement, and maintain complex LAN, WAN, and data center network infrastructures.
• Focus on Cisco Nexus 6000, 7000, or 9000 series switches and Cisco Virtual Switching System (VSS) technologies.
• Manage Nexus Fabric features, including Virtual Port Channels (vPC) and Virtual Device Contexts (VDCs).
• Diagnose and resolve complex network issues, performance bottlenecks, and security vulnerabilities.
• Implement network security measures such as ACLs, firewalls, and intrusion detection/prevention systems.
• Collaborate with server, storage, and application teams to ensure infrastructure meets business needs.
• Manage network changes, upgrades, and hardware/software technology refreshes.

Requirements

• Extensive hands-on network engineering experience with a strong focus on Cisco technologies.
• Deep expertise in Cisco VSS, vPC, and Nexus NX-OS devices.
• Strong knowledge of networking protocols including TCP/IP, OSPF, BGP, and MPLS.
• Proficiency with network operating systems (IOS/NX-OS) and DMVPN setup/configuration.
• Experience with F5 Load Balancers and Cisco Wireless Technologies.
• Familiarity with network monitoring tools such as SolarWinds or PRTG.
• Must be authorized to work in the US without sponsorship (no visa transfers available).

Preferred Qualifications

• Cisco certifications such as CCNP or CCIE.

Benefits

• Medical, Dental, Vision, and Life Insurance.
• Paid holidays and Paid Time Off (PTO).
• 401(k) plan and company contributions.
• Long-term and Short-term Disability coverage.
• Paid Parental Leave.
• Eligibility for Cognizant’s discretionary annual incentive program.

About the Company

Cognizant’s CIS (Cognizant Infrastructure Services) Practice is a global leader in providing IT infrastructure services. We deliver innovative solutions to optimize and transform IT infrastructure, ensuring business agility and operational efficiency through cloud computing, data center management, network services, and cybersecurity.