Routing and Switching Engineer (LAN,B2B, ACI DC)

Job Description:

The Level 3 Network Operations Engineer is a senior technical authority responsible for overseeing the stability performance and optimization of the organizations enterprise network infrastructure. The role requires extensive hands-on experience in routing and switching technologies across LAN SD-WAN Internet DMZ B2B and ACI Data Center environments. This engineer is expected to handle complex incidents lead root cause analysis and guide architectural decisions.

• Network Infrastructure Oversight: Manage and optimize routing switching and interconnectivity across LAN WAN DMZ B2B and cloud environments. Ensure availability performance and security of network services supporting critical business applications.
• Advanced Troubleshooting: resolve complex technical issues spanning Layer 14. Lead root cause analysis and long-term corrective action planning.
• Design & Implementation: Participate in network design reviews and implement enterprise-grade network infrastructure (ACI SD-WAN etc.). Evaluate and integrate new networking technologies to improve resilience and performance.
• Network Change Management: Execute and oversee network configuration changes migrations and upgrades in compliance with change control policies. Ensure minimal downtime and risk to production systems.
• Monitoring & Optimization: Proactively monitor network performance using tools like SNMP NetFlow and telemetry. Analyze trends and implement tuning strategies to enhance throughput and reduce latency.
• Documentation & Standards: Maintain up-to-date documentation of network diagrams configurations and operational procedures. Ensure network practices align with internal standards and regulatory requirements.
• Collaboration & Mentorship: Collaborate with security infrastructure and application teams on end-to-end service delivery. Provide guidance and knowledge transfer to Level 2 engineers and junior staff.

• Expert-level knowledge in routing protocols (OSPF BGP EIGRP) switching (VLANs STP VTP) and IP addressing.
• Strong hands-on experience with Cisco technologies including ACI Data Center and SD-WAN platforms.
• Proficient in DMZ B2B and internet gateway configuration and operations.
• Solid understanding of network segmentation redundancy and HA principles.
• Strong diagnostic and analytical skills especially under high-pressure situations.
• Excellent documentation and communication skills.

• Bachelors Degree in Network Engineering Computer Science or related field.
• Preferred certifications:
• - Cisco CCNP or CCIE (Enterprise or Data Center track)
• - SD-WAN certifications (Cisco Viptela)
• - ACI or Nexus-related training

• May require occasional data center and branch office visits.
• Must be available for critical issue resolution and planned changes during off-hours.
• Regular interaction with cross-functional technical teams.

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