Role Overview The L3 Network Engineer is responsible for designing, implementing, optimizing, and troubleshooting complex enterprise network infrastructure. This role acts as a technical escalation point (Level 3) for critical incidents, ensuring high availability, performance, and security of the network setting across global locations.

Key Responsibilities

1. Network Design & Architecture

- Design and implement scalable and resilient network solutions (LAN, WAN, WLAN, DC).
- Lead network architecture planning for new sites, migrations, and expansions.
- Evaluate and integrate new technologies (SD-WAN, Cloud Networking, SASE, Zero Trust).

2. Advanced Troubleshooting & Incident Management

- Act as L3 escalation point for critical P1/P2 incidents.
- Perform root cause analysis (RCA) and implement long-term fixes.
- Ensure adherence to SLA, MTTR, and uptime commitments.

3. Network Operations & Optimization

- Monitor network performance and ensure proactive issue resolution.
- Optimize routing, switching, and bandwidth utilization.
- Manage high-availability configurations (HSRP, VRRP, clustering).

4. Security & Compliance

- Implement and manage firewall policies (Palo Alto, Fortinet, Cisco ASA).
- Ensure compliance with security standards and audit requirements.
- Handle DDoS protection, IPS/IDS, VPN (Site-to-Site & Remote Access).

5. Change & Release Management

- Plan and execute network changes with minimal downtime.
- Participate in CAB discussions and risk assessments.
- Maintain accurate documentation and configuration backups.

6. Automation & Monitoring

- Leverage tools like SolarWinds, PRTG, or equivalent for observability.
- Drive automation using Python, Ansible, or scripting.




- Improve operational efficiency through AI/automation initiatives.

7. Vendor & Stakeholder Management

- Coordinate with ISPs, OEMs, and vendors for issue resolution and upgrades.
- Work with cross-functional teams (Security, Infra, Cloud, GNOC).
- Support procurement in BoQ validation and technical evaluation.

Required Technical Skills

Core Networking

- Routing: BGP, OSPF, EIGRP
- Switching: VLAN, STP, VTP, EtherChannel
- WAN technologies (MPLS, SD-WAN)
- Wireless (enterprise-grade solutions ? Aruba, Cisco)

Security

- Firewalls (Palo Alto, Fortinet, Cisco ASA/Firepower)
- VPN technologies (IPSec, SSL)
- Network access control, segmentation, Zero Trust concepts

Tools & Monitoring

- SolarWinds / Network Observability tools
- Packet analysis (Wireshark, TCPdump)
- Configuration management tools

Automation

- Python / Shell scripting
- Ansible or similar automation frameworks (preferred)

Experience & Qualifications

- 8 years to 10 years of experience in enterprise network operations
- Strong experience in multi-site/global network environments
- Certifications (preferred):
- CCNP / CCIE
- PCNSE / NSE (Fortinet)
- Aruba certifications

Soft Skills

- Strong problem-solving and analytical mindset
- Excellent stakeholder communication (technical & leadership level)
- Ability to handle high-pressure situations and critical outages
- Proactive ownership and accountability

Key Performance Indicators (KPIs)

- SLA adherence & MTTR reduction
- Incident recurrence reduction (RCA effectiveness)
- Network uptime and availability
- Automation adoption and operational efficiency
- Audit and compliance adherence

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📌 Network Engineer (Noida)
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