Senior Network Architect

The ideal candidate will have proven experience designing, implementing, supporting, and optimizing large-scale Cisco-based network infrastructures including Cisco ACI, Nexus Data Centers, SD-WAN, DDI (DNS/DHCP/IPAM), Load Balancers, Wireless Networks, and Network Security solutions. We are seeking a highly experienced Senior Network Architect / Lead Network Engineer with extensive expertise in Enterprise, Data Center, Cloud, SDN, Security, and Network Automation technologies.

Role: Senior Network Architect
Location - Remote
JD
Job Summary
We are seeking a highly experienced Senior Network Architect / Lead Network Engineer with extensive expertise in Enterprise, Data Center, Cloud, SDN, Security, and Network Automation technologies. The ideal candidate will have proven experience designing, implementing, supporting, and optimizing large-scale Cisco-based network infrastructures including Cisco ACI, Nexus Data Centers, SD-WAN, DDI (DNS/DHCP/IPAM), Load Balancers, Wireless Networks, and Network Security solutions.
The candidate will be responsible for network architecture, operational excellence, technology modernization, automation initiatives, and providing L3/SME support for mission-critical environments.
Key Responsibilities
Enterprise & Data Center Networking
Design, deploy, and support large-scale enterprise and data center networks.
Architect and manage Cisco Nexus, Catalyst, Arista, and Cisco ACI-based network infrastructures.
Design and implement Spine-Leaf architectures, VXLAN, EVPN, VRFs, VLANs, VPCs, and Data Center Interconnect solutions.
Lead network transformation and migration initiatives from legacy environments to SDN-based architectures.
Develop High-Level Design (HLD), Low-Level Design (LLD), implementation plans, and technical documentation.
Routing & Switching
Manage and troubleshoot:
BGP
OSPF
EIGRP
Static Routing
Route Maps
Prefix Lists
ACLs
Implement Layer 2/Layer 3 technologies including:
STP/RSTP
VTP
Port Channels
VPC
HSRP
VRRP
Cisco ACI & SDN
Design, deploy, and support Cisco ACI environments.
Configure and manage:
APIC Controllers
Tenants
EPGs
Bridge Domains
VRFs
Contracts
Filters
L3Outs
Manage Nexus Dashboard solutions:
NDO
NDFC
NDI
Perform ACI upgrades, migrations, capacity planning, and compliance management.
WAN & SD-WAN
Design and support enterprise WAN solutions including:
Cisco SD-WAN
MPLS
DMVPN
IPSec VPNs
GRE Tunnels
Configure Cisco ISR, ASR, and Catalyst 8000 platforms.
Manage WAN optimization and resiliency initiatives.
Network Security
Manage and support:
Palo Alto Firewalls
Cisco Firepower
Cisco ISE
TACACS
RADIUS
Implement:
Network Segmentation
Zero Trust Architecture
Micro-Segmentation
VPN Technologies
NAC Solutions
Load Balancing & Application Delivery
Configure and administer:
F5 BIG-IP LTM/GTM
F5 AFM
Citrix NetScaler ADC
Azure Load Balancers
Implement:
SSL Offloading
Content Switching
Load Balancing Policies
Health Monitoring
Global Traffic Management
DDI (DNS/DHCP/IPAM)
Manage Infoblox DDI solutions.
Administer:
DNS
DHCP
IPAM
Grid Masters
DNS Zones
DNS Records
DHCP Reservations
Support enterprise-wide DNS architecture and services.
Wireless Infrastructure
Design and support Cisco wireless environments.
Manage:
Cisco WLCs
Access Points
Cisco Prime
Aruba Wireless Solutions
Implement secure 802.1X authentication using Cisco ISE.
Network Automation
Develop and maintain automation solutions using:
Ansible
Terraform
Postman APIs
REST APIs
Automate provisioning, configuration compliance, monitoring, and reporting processes.
Integrate automation frameworks with Cisco ACI, Nexus Dashboard, and SD-WAN environments.
Monitoring & Operations
Support network operations utilizing:
SolarWinds
ThousandEyes
Grafana
Cisco DNA Center
NetBrain
ServiceNow
Lead root cause analysis (RCA) and major incident resolution activities.
Drive vulnerability remediation and infrastructure lifecycle management programs.
Required Skills
Networking
Cisco Nexus 5K/7K/9K
Cisco Catalyst 9K Series
Arista Switching
Cisco ISR/ASR Routers
Data Center Networking
LAN/WAN Architecture
Routing Protocols
BGP
OSPF
EIGRP
MPLS
SD-WAN
VRF
SDN & Data Center
Cisco ACI
VXLAN
EVPN
Nexus Dashboard (NDO/NDFC/NDI)
Security
Palo Alto
Cisco Firepower
Cisco ISE
IPSec VPN
NAC
AAA Services
Load Balancing
F5 LTM/GTM
F5 AFM
Citrix NetScaler ADC
Azure Load Balancer
DDI
Infoblox DNS
DHCP
IPAM
Automation
Ansible
Terraform
REST APIs
Postman
Python (Preferred)
Monitoring Tools
SolarWinds
ThousandEyes
Grafana
NetBrain
Cisco DNAC
ServiceNow
Preferred Certifications
CCNP Enterprise
CCNP Data Center
Cisco Certified Specialist ACI Implementation
Cisco Certified Specialist Data Center Core
Cisco Certified Specialist Enterprise Core
Cisco SD-WAN Certification
Palo Alto Certifications (Preferred)
F5 Certifications (Preferred)
Experience
10 years of Enterprise and Data Center Network Engineering experience.
5 years of Cisco ACI and Data Center Architecture experience.
Experience supporting global enterprise environments with mission-critical infrastructure.
Experience leading migration, modernization, and network transformation initiatives.