NOC L3 ENgineer - Network

Zybisys Consulting Services; Bengaluru; On-site; INR 1,500,000 - 2,300,000; Full time

Job summary

Zybysis is seeking an L3 NOC Engineer to lead advanced troubleshooting for network, firewall, and voice platforms in a Bangalore-based environment. You will configure Cisco routing, switching and Nexus, manage SIP routing and voice flows, and implement security policies across Cisco and Check Point firewalls.

The role requires strong knowledge of QoS, routing protocols, and end-to-end issue resolution, with leadership to guide L2 engineers and handle escalations.

Qualifications

• CCNA is mandatory baseline.
• CCNP and Check Point certifications are preferred.
• Hands-on Cisco firewall and VoIP experience required.

Responsibilities

• Lead advanced troubleshooting for network, firewall, and voice issues.
• Configure and manage Cisco routing, switching, and Nexus switches.
• Manage Cisco and Check Point firewall policies and security.

Skills

Cisco routing

Cisco switching

Cisco Nexus

VoIP / SIP

Firewall configuration

Check Point firewall

SIP routing

Network troubleshooting

NOC leadership

Education

CCNA

CCNP

Check Point CCSA/CCSE

Cisco Security / Collaboration certs

Tools

CUCM

SIP routers

Firewall management tools

Job description

Role & responsibilities

Job Title: NOC Engineer L3

Location: Bangalore

Department: IT-INFRA

Experience 5-8 Years

Role Overview:

We are looking for an L3 NOC Engineer Network & Voice with strong expertise in Cisco networking, firewalls, and VoIP technologies.

The role involves advanced troubleshooting, managing network and voice infrastructure, implementing upgrades and optimizations, handling critical escalations, and ensuring high availability, security, and performance across the environment.

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 voice environments.
• 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 and troubleshooting.
• 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)
• CCNA (mandatory baseline)
• Check Point CCSA / CCSE
• Cisco Security / Collaboration certifications (added advantage)

About us:

Zybysis is a fast-growing technology company delivering enterprise infrastructure, data center, and cybersecurity solutions to clients. With a strong focus on reliability, security, and operational excellence, we support mission-critical environments for enterprise customers. Our teams combine technical expertise with strong service delivery to ensure high availability and performance across complex IT environments.

Preferred candidate profile

;