Senior Network Security Engineer

Role:- Network Security Engineer – L4 (Cisco ACI & Cloud Networking)

Location: Phoenix AZ (onsite)

Fulltime

ACI – Mandatory

Azure – Mandatory

F5 – Mandatory

Job Title: Senior Network Engineer – L4 (Cisco ACI & Cloud Networki

ng)Cloud Experience is Mandatory- AZ

URE

Job Summ

ary:The Senior Network Engineer (L4) is responsible for leading the implementation and optimization of Cisco Application Centric Infrastructure (ACI) and hybrid cloud networking environments. This role provides technical leadership, advanced troubleshooting support, and contributes to high‑level network design activities.

The ideal candidate will have deep hands-on experience in data center networking, cloud connectivity, automation, and cross‑team collaborat

ion.Key Responsibilit

• ies:Lead deployment, configuration, and optimization of Cisco ACI fabric compone
• nts.Design and configure ACI constructs including VRFs, Bridge Domains, EPGs, contracts, and associated polic
• ies.Implement segmentation and micro‑segmentation strategies in ACI environme
• nts.Oversee ACI fabric maintenance, upgrades, and operational health che
• cks.Partner with architects on high-level design decisions and solution validat
• ion.Design and implement hybrid connectivity solutions (AWS, Azure, G
• CP).Configure Direct Connect, ExpressRoute, VPN gateways, and cloud routing architectu
• res.Integrate ACI with cloud-native networking services to support hybrid workload traffic fl
• ows.Ensure best practices for cloud network security, routing, and performance optimizat
• ion.Act as an L4 escalation point for high-severity incidents across ACI and cloud netwo
• rks.Perform deep-dive diagnostics, packet captures, and traffic-flow analy
• sis.Lead incident root cause analysis and preventive remediation activit
• ies.Coordinate with Cisco TAC and cloud providers for complex issue resolut
• ion.Lead automation initiatives using Terraform, Ansible, or similar to
• ols.Develop and maintain templates, playbooks, and scripts for repeatable deployme
• nts.Deliver technical knowledge-sharing sessions and mentor junior team memb
• ers.Contribute to High-Level Design (HLD) and Low-Level Design (LLD) documentat
• ion.Create operational runbooks, implementation guides, and standard operating procedu
• res.Ensure adherence to compliance requirements, network governance standards, and change management proces

ses.

Required Skills & Qualificat

• ions:Strong expertise in Cisco ACI (policy model, spine-leaf architecture, multi-pod/multi-site conce
• pts).Solid understanding of L2/L3 networking (BGP, OSPF, VXLAN, E
• VPN).Experience with AWS, Azure, or GCP networking constructs and hybrid-cloud connecti
• vity.Strong analytical and troubleshooting skills for complex network is
• sues.Excellent documentation and communication sk

ills.Preferred Certificat

• ions:CCNP Data Center or CCNP Enterp
• rise.Cloud networking certifications: AWS Advanced Networking Specialty, Azure Network Engineer Associate, Google Cloud Professional Cloud Network Engi

neer.