L2 Network Engineer

Role Summary

The L2 Network Engineer is responsible for designing, implementing, optimizing, and troubleshooting complex enterprise network infrastructures. This role demands strong expertise in routing, switching, firewalls, SD-WAN, load balancing, data center networking, network security, and automation. The engineer will act as an escalation point for L1/L2 teams and lead critical projects, migrations, and performance improvements.

Key Responsibilities

A.Network Design & Architecture

· Design and architect enterprise LAN/WAN, Data Center, and campus networks.

· Create HLD/LLD, network diagrams, topology layouts, and documentation.

· Capacity planning, traffic engineering, and bandwidth optimization.

· Evaluate new technologies like SD-WAN, ACI, VXLAN, EVPN, and automation tools.

B. Implementation & Operations

· Implement enterprise-grade routing & switching solutions (OSPF, BGP, EIGRP, MPLS, VRF, STP, HSRP/VRRP).

· Deploy, configure, and maintain network devices including routers, switches, firewalls, WLC, load balancers, and VPN appliances.

· Data center networking:
Leaf-Spine architecture, VXLAN, Fabric, Cisco ACI (advantage).

· Execute network upgrades, migrations, expansions, and firmware updates.

· Administer IP addressing, DNS, DHCP, NAC, AAA/RADIUS/TACACS+.

C. Security & Compliance

· Configure and manage Enterprise Firewalls (Palo Alto / Fortinet / Check Point / Cisco Firepower).

· Web security, URL filtering, threat prevention, SSL inspection.

· Manage site-to-site VPN, remote VPN, IPsec, SSL VPN solutions.

· Participate in security audits, compliance checks, and vulnerability mitigation.

D. Escalation Management

· Act as L3 SME for complex and critical network incidents.

· Perform root cause analysis (RCA) and problem management.

· Coordinate with OEMs, ISPs, and vendors to resolve escalated issues.

· Mentor and guide L1/L2 teams, provide KT sessions.

E. Monitoring & Performance Optimization

· Monitor network performance, latency, and packet loss using tools (Solar Winds/Nagios/PRTG/Spectrum).

· Implement proactive alerting, redundancy, high availability, and failover strategies.

· Improve network resiliency, uptime, SLA adherence, and service continuity.

F. Automation & Scripting

· Develop scripts for network automation using Python, Ansible, APIs, Nornir, etc.

· Automate configuration backups, compliance checks, and device provisioning.

G. Documentation & Reporting

· Maintain network configuration standards, SOPs, policies, and procedures.

· Prepare incident reports, change management documentation, and RCA reports.

· Maintain detailed asset & inventory records.

3. Required Technical Skills

Routing & Switching

· Expert in OSPF, BGP, MPLS, VRF, EIGRP, STP, VLANs, VTP, HSRP/VRRP, Ether Channel.

· Experience with Cisco, Juniper, Aruba, HPE, Dell, or equivalent platforms.

Firewalls & Security

· Deep expertise in Palo Alto / Fortinet / Check Point / Cisco Firepower.

· Strong understanding of NGFW features, IDS/IPS, threat protection.

Data Center & Advanced Networking

· VXLAN, BGP EVPN, Leaf-Spine architecture.

· Cisco ACI / NSX / SDN technologies.

Wireless & WAN

· SD-WAN solutions (Cisco Viptela, Fortinet, Aruba, Versa).

· Wireless Controllers, corporate Wi-Fi, 802.11 standards.

Tools & Platforms

· Monitoring:
Solar Winds, PRTG, Nagios, Net Brain.

· Ticketing & ITIL:
Service Now, Remedy, Jira.

Automation

· Python

· Ansible

· YAML, JSON, REST APIs

· Network automation frameworks

Cloud Networking (Preferred)

· AWS / Azure VNet, Transit Gateway, VPN, Direct Connect / Express Route

· Cloud firewalls & security policies

4. Soft Skills

· Strong analytical and problem-solving capabilities.

· Excellent communication and leadership skills.

· Ability to work under pressure in high-severity situations.

· Collaborative attitude and mentoring ability.

· Strong docu