Network Engineer (Nexus/ACI) L3

Department/Group: SI
Job Location: Mumbai
Travel Required: Yes

We are seeking an experienced Network Engineer (Nexus/ACI) L3 with deep hands-on expertise in Cisco Nexus switches and Cisco ACI (Application Centric Infrastructure). The selected candidate will act as a Resident Engineer, responsible for managing, troubleshooting, and optimizing Nexus and ACI environments to ensure seamless network performance and reliability across enterprise data centers.

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  Configure, deploy, and maintain Cisco Nexus switches and Cisco ACI fabrics for data center and enterprise environments.



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  Integrate ACI with external devices such as firewalls, load balancers, and virtualization platforms.



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  Implement advanced features like VXLAN EVPN, Service Graphs, Multi-Chassis Link Aggregation (MLAG), VMM Domain, and Fabric Path.



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  Ensure proper integration with existing infrastructure during new deployments.

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  Monitor and manage Cisco Nexus/ACI environments to ensure high availability and optimal performance.



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  Conduct capacity planning, performance tuning, and proactive maintenance.



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  Utilize Python, Ansible, and REST APIs for network automation within ACI environments.



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  Troubleshoot Nexus and ACI hardware/software issues and ensure timely resolution.

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  Provide L3-level technical support for complex network incidents.



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  Perform root cause analysis (RCA) and implement corrective measures.



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  Collaborate with cross-functional teams to resolve issues impacting infrastructure or business operations.

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  Ensure compliance with security standards and organizational policies.



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  Implement ACI-based segmentation, access control policies, and other security best practices.

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  Maintain up-to-date documentation of network configurations, diagrams, and standard operating procedures.



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  Provide regular reports on network health, incidents, and performance metrics.



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  Stay current with emerging Cisco ACI and Nexus features, recommending upgrades and improvements where needed.

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  Total Experience: 6+ years, including at least 3 years of hands-on experience managing Cisco Nexus/ACI environments.



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  Experience managing large-scale data center networks for a minimum of 1 year.



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  Strong understanding of data center technologies including Software-Defined Networking (SDN).



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  Solid knowledge of Layer 3 protocols such as OSPF, BGP, VRF, and L3Out.



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  Expertise with Cisco Nexus family (7000, 5000, 9000 series) and ACI APIC Controllers.



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  Proficiency with tools such as Wireshark, NDB, NetFlow, and other network monitoring tools.



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  Bachelor s degree in Engineering, Computer Science, or Information Technology (or equivalent experience).

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  Cisco CCNP Data Center, CCIE Data Center, or Cisco Certified ACI Specialist.



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  Knowledge of EIGRP, MPLS, and other data center protocols is a plus.

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  Strong analytical and troubleshooting abilities.



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  Excellent communication and interpersonal skills to coordinate with multiple stakeholders.



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  Ability to work independently, manage multiple priorities, and deliver within deadlines.



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  Willingness to travel and provide on-site support as per business needs.



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  Flexibility for after-hours or weekend maintenance activities when required.

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  Deep understanding of networking and switching fundamentals.



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  Experience in configuring and maintaining ACI/Nexus environments.



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  Strong verbal and written English communication skills.