Network Engineer / Network Lead – L5

Location: Coimbatore, Tamil Nadu

Experience: 7–10 Years

Employment Type: Full-time

Work Mode: On-site

About the Role

We are looking for an experienced Network Engineer / Network Lead to manage, troubleshoot, and optimize enterprise network infrastructure and provide advanced technical support up to L5 level.

The role requires strong hands-on expertise in routing, switching, firewalls, VPN, wireless networks, network security, monitoring, troubleshooting, and network architecture.

The candidate will be responsible for handling complex network incidents, leading technical escalations, performing root-cause analysis, supporting network design and implementation, and working with clients, vendors, and internal teams to ensure high availability and performance of network infrastructure.

Key ResponsibilitiesNetwork Infrastructure Management

- Manage and maintain enterprise LAN, WAN, WLAN, data center, and cloud-connected network infrastructure.
- Configure, monitor, troubleshoot, and maintain routers, switches, firewalls, wireless controllers, access points, VPNs, and other network devices.
- Manage network connectivity across multiple locations, data centers, and cloud environments.
- Ensure network availability, performance, scalability, and reliability.
- Monitor network health, bandwidth utilization, latency, packet loss, and overall performance.

Routing & Switching
- Strong hands-on experience in routing and switching technologies.
- Configure and troubleshoot VLANs, trunking, STP, EtherChannel, HSRP/VRRP, NAT, ACLs, and QoS.
- Troubleshoot and optimize routing protocols such as OSPF and BGP.
- Perform advanced troubleshooting of routing loops, network congestion, packet loss, latency, and connectivity issues.
- Support network segmentation and high-availability network designs.

Firewall & Network Security
- Configure, manage, and troubleshoot enterprise firewalls and security appliances.
- Manage firewall policies, access control rules, NAT, VPN, and secure remote access.
- Troubleshoot IPsec and SSL VPN connectivity issues.
- Implement network security best practices and segmentation.
- Work with security teams to investigate and resolve network security incidents.
- Review firewall configurations and recommend improvements to security and performance.

L1–L5 Technical Escalation
- Provide technical support and guidance across L1, L2, L3, L4, and L5 network escalations.
- Act as the L5 technical escalation point for highly complex and critical network issues.
- Take ownership of major network incidents and production outages.
- Perform advanced troubleshooting using logs, monitoring tools, packet captures, and network diagnostic tools.
- Conduct detailed Root Cause Analysis (RCA) for critical and recurring network incidents.




- Identify permanent corrective actions and prevent recurrence of major incidents.
- Coordinate with OEMs, ISPs, telecom providers, and technology vendors for complex issues requiring external escalation.
- Provide technical guidance to L1–L4 engineers and support teams.

Network Design & Implementation
- Participate in the design, implementation, and optimization of enterprise network architecture.
- Evaluate existing network infrastructure and recommend improvements.
- Design scalable and highly available network solutions.
- Support network migrations, upgrades, expansions, and infrastructure modernization projects.
- Prepare network topology diagrams, architecture documents, configuration standards, and technical documentation.
- Conduct network capacity planning and performance assessments.

Network Monitoring & Troubleshooting
- Monitor network infrastructure using enterprise network monitoring and management tools.
- Analyze network traffic, performance metrics, logs, and alerts.
- Troubleshoot complex issues related to DNS, DHCP, TCP/IP, routing, switching, VPN, firewall, and wireless connectivity.
- Use tools such as Wireshark, ping, traceroute, nslookup, network monitoring platforms, and packet analysis tools for advanced troubleshooting.
- Identify network performance bottlenecks and implement corrective actions.

Network Operations & ITSM
- Manage network incidents, service requests, problems, and changes through ServiceNow, JIRA, or similar ITSM platforms.
- Ensure incidents and service requests are resolved within defined SLA and KPI requirements.
- Participate in Incident Management, Problem Management, Change Management, and Capacity Management processes.
- Prepare incident reports, RCA documents, SLA reports, and network performance reports.
- Maintain accurate network documentation, configuration records, SOPs, and knowledge base articles.

Client & Vendor Management
- Act as a technical point of contact for clients regarding network infrastructure and service issues.
- Participate in technical discussions, incident calls, and client review meetings.
- Communicate technical issues, impact, root cause, and resolution clearly to clients and stakeholders.
- Coordinate with ISPs, OEMs, vendors, and third-party service providers for issue resolution.
- Manage vendor escalations and ensure timely resolution of critical network issues.

Automation & Continuous Improvement
- Identify opportunities to automate network monitoring, configuration, and operational activities.




- Use Python, PowerShell, Ansible, or other automation tools where applicable.
- Develop scripts and automation solutions to improve network operational efficiency.
- Identify recurring network issues and implement permanent improvements.
- Continuously improve network availability, security, performance, and operational processes.

Required Technical Skills
- Strong hands-on experience in Enterprise Network Engineering.
- Excellent knowledge of TCP/IP, LAN, WAN, WLAN, VLAN, NAT, ACL, DNS, DHCP, and VPN.
- Strong experience with routing and switching.
- Hands-on experience with OSPF, BGP, STP, HSRP/VRRP, QoS, and EtherChannel.
- Strong experience with firewalls and network security.
- Experience with IPsec VPN and SSL VPN.
- Strong troubleshooting skills across L1–L5 network issues.
- Experience with network monitoring and packet-analysis tools.
- Good understanding of data center and enterprise network architecture.
- Knowledge of cloud networking, particularly Azure/AWS networking, is an added advantage.
- Knowledge of network automation using Python, PowerShell, or Ansible is an added advantage.

L5-Level Expectations The candidate should be capable of independently handling L5-level network escalations, including:

- Critical production network outages.
- Complex routing and switching issues.
- BGP/OSPF routing problems.
- Firewall and VPN architecture-level issues.
- Multi-site connectivity and performance issues.
- Advanced packet-level troubleshooting.
- Network architecture and design challenges.
- Major incident RCA and permanent corrective actions.
- Vendor/OEM-level technical escalations.
- Network modernization, migration, and optimization initiatives.

Qualifications & Experience
- 7–10 years of experience in Network Engineering, Enterprise Networking, Managed Network Services, or Network Operations.
- Strong experience handling L3, L4, and L5 network escalations.
- Proven experience managing enterprise network infrastructure and critical network environments.
- Experience in network design, implementation, troubleshooting, and optimization.
- Experience handling client escalations and major network incidents.
- Experience working in a Managed Services / NOC / Enterprise Network Operations environment is preferred.
- CCNP, CCNA, Fortinet, Palo Alto, Aruba, Cisco, AWS, Azure, or other relevant certifications are an added advantage.
- Strong communication, analytical, troubleshooting, and stakeholder-management skills.

Preferred Certifications
- CCNA / CCNP
- Fortinet NSE / FCP
- Palo Alto Networks certifications
- Aruba certifications
- AWS / Azure Networking certifications
- ITIL certification

Pay: ₹120,000.00 - ₹150,000.00 per month

Perks

- Health insurance
- Leave encashment
- Provident Fund

Work Location: In person

📌 Network Engineer / Network Lead – (Coimbatore)
🏢 Shastika Global Impex private
📍 Coimbatore