Tower Lead - Cisco Application Centric Infrastructure (ACI)I,
United States
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Job Description
Tower Lead - Cisco Application Centric Infrastructure (ACI)I,
Others, North Carolina

Job Summary

Arista ACI

Job Description: Senior Network Engineer (L3)

Role Overview

We are seeking an experienced L3 Network Engineer with strong expertise in Cisco ACI (Application Centric Infrastructure) and Arista Networks (EOS-based data center solutions). The candidate will be responsible for design, implementation, troubleshooting, and optimization of large-scale enterprise/data center network environments.

The role focuses on designing, deploying, and supporting modern data center networks, including Cisco ACI and Arista leaf‑spine architectures with VXLAN EVPN overlays. It provides Level‑3 support, troubleshooting complex fabric, routing (BGP/OSPF/EIGRP), and control/data‑plane issues while performing root cause analysis for major outages. The position also involves automation and integration, managing APIC, CloudVision, EVPN‑VXLAN fabrics, and integrating with VMware and L4‑L7 services such as firewalls and load balancers.

Key Responsibilities

Arista ACI

Key Responsibilities

 

  • Design and deploy Cisco ACI fabric (Spine-Leaf architecture).
  • Implement tenant, VRF, bridge domains, EPGs, contracts, and policies in ACI.
  • Design and implement Arista leaf-spine data center networks using EOS.
  • Configure VXLAN EVPN overlays in Arista environments.
  • Develop scalable L3 network architectures supporting enterprise applications.
  • Provide Level 3 support for critical network incidents.
  • Troubleshoot:
    • ACI fabric issues (APIC, leaf/spine nodes, policy issues)
    • VXLAN/EVPN control-plane and data-plane issues
    • BGP, OSPF, EIGRP routing problems
  • Perform root cause analysis (RCA) for major outages.

 

Arista-Specific Responsibilities

  • Configure and manage:
    • Arista EOS (Extensible Operating System)
    • CloudVision Portal (CVP)
  • Implement:
    • EVPN-VXLAN fabric architecture
    • Automation using eAPI, Ansible, Python

Cisco ACI Responsibilities

  • Manage and troubleshoot:
    • APIC controllers
    • ACI policies, contracts, filters
  • Integration with:
    • VMware (VMM integration)
    • L4-L7 service insertion (firewalls, load balancers)

Skill Requirements

Arista ACI

Required Skills & Experience

  • 8–15 years of networking experience
  • 3–5 years of hands-on experience in Cisco ACI
  • 3–5 years of hands-on experience in Arista data center networks
  • Strong troubleshooting experience in production environments
  • Deep knowledge of data center networking architectures

 

Certifications (Mandatory / Preferred)

  • CCNP Data Center or CCNP Enterprise
  • ACE-L3 (Arista Certified Engineering Level 3) or equivalent hands-on expertise
  • CCIE Data Center / CCIE Enterprise Infrastructure

 

The candidate must demonstrate:

  • Real-world deployment of ACI fabric (minimum 2–3 implementations)
  • Experience configuring Arista VXLAN EVPN fabrics
  • Strong troubleshooting of production outages
  • Writing automation scripts for network provisioning
  • Experience in multi-vendor data center environments

 

Soft Skills

  • Strong analytical and problem-solving skills
  • Ability to work under pressure in critical incidents
  • Excellent communication and documentation skills
  • Collaboration with cross-functional teams (security, cloud, application teams)

Other Requirements

Arista ACI

Soft Skills

  • Strong analytical and problem-solving skills
  • Ability to work under pressure in critical incidents
  • Excellent communication and documentation skills
  • Collaboration with cross-functional teams (security, cloud, application teams)
Maximum Salary (US): 
Minimum Salary (US): 
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Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 226,300 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending December 2025 totaled $14.5 billion.

Compensation and Benefits

A candidate’s pay within the range will depend on their skills, experience, education, and other factors permitted by law. This role may also be eligible for performance-based bonuses subject to company policies. In addition, this role is eligible for the following benefits subject to company policies: medical, dental, vision, pharmacy, life, accidental death & dismemberment, and disability insurance; employee assistance program; 401(k) retirement plan; 10 days of paid time off per year (some positions are eligible for need-based leave with no designated number of leave days per year); and 10 paid holidays per year.