L3 NOC Engineer - Network

Zoho; Bengaluru; On-site; INR 900,000 - 1,200,000; Full time

Job summary

ZYBISYS CONSULTING SERVICES LLP is seeking an L3 NOC Engineer specialized in Network & Voice for Bengaluru. You will lead advanced troubleshooting for network, firewall, and VoIP issues, configure Cisco routing, switching, and Nexus devices, and manage security policies across the environment.

You will guide L2 engineers and handle escalations. The role emphasizes ensuring high availability, security, and performance, with exposure to SIP routing, CUCM, and Check Point firewall policies.

Qualifications

• Experience troubleshooting network, firewall, and voice issues end-to-end.

Responsibilities

• Lead advanced troubleshooting and RCA for network, firewall, and voice issues.
• Configure and manage Cisco routing, switching (Nexus) and firewall solutions.
• Manage Cisco and Check Point firewall policies and security.
• Handle SIP routing and integration with Cisco voice platforms.
• Implement network, firewall, and voice changes and upgrades.
• Ensure high availability, performance, and security across environments.
• Guide L2 engineers and handle escalations.

Skills

Cisco routing

Cisco switching

Cisco Nexus

Firewall configuration

VoIP / SIP

Routing protocols (BGP, OSPF)

Voice platforms (CUCM)

Network security

SLA and high availability

Tools

Cisco IOS

Check Point firewall

Job description

ZYBISYS CONSULTING SERVICES LLP | Full time

We are looking for an L3 NOC Engineer – Network & Voice with strong expertise in Cisconetworking, firewalls, and VoIP technologies. The role involves advanced troubleshooting,managing network and voice infrastructure, implementing upgrades and optimizations, handlingcritical escalations, and ensuring high availability, security, and performance across theenvironment.

Key Responsibilities:

• Lead advanced troubleshooting and RCA for network, firewall, and voice issues.
• Configure and manage Cisco routing, switching (including Nexus), and firewall solutions.
• Manage and optimize Cisco firewall and Check Point firewall policies and security.
• Handle SIP routing, voice call flows, and integration with Cisco voice platforms.
• Implement network, firewall, and voice changes, upgrades, and optimizations.
• Ensure high availability, performance, and security across network and voiceenvironments.
• Guide L2 engineers and handle escalations.

Technical Expertise:

• Strong expertise in Cisco routing, switching, and Cisco Nexus (data center switching).
• Deep knowledge of routing protocols (BGP, OSPF, etc.) and QoS.
• Hands-on experience with Cisco firewall and Check Point firewall configuration andtroubleshooting.
• Strong experience in Cisco Voice / VoIP technologies (SIP, CUCM, gateways, SIP routers).
• Knowledge of NAT, VPN, security policies, and voice traffic optimization.
• Ability to troubleshoot complex network, firewall, and voice issues end-to-end.

Certifications (Preferred):

• CCNP (Enterprise / Security / Collaboration)
• Cisco Security / Collaboration certifications (added advantage)