Senior Network Architect

Ampcus Inc. is a certified global provider of a broad range of Technology and Business consulting services. We are in search of a highly motivated candidate to join our talented Team. Cisco ACI & SDN Cisco SD-WAN Cisco Firepower Cisco Secure Client Network Segmentation Micro-Segmentation Load Balancing & Application Delivery Load Balancing Policies DNS Zones Cisco DNA Center Cisco Nexus 5K/7K/9K Cisco Catalyst 9K Series Cisco ISR/ASR Routers Cisco ACI Palo Alto Cisco Firepower Cisco Secure Client Network Segmentation Zero Trust Micro-Segmentation Job Title: Senior Network Architect Location(s): Chicago, IL (Remote) Job Summary We are seeking a highly experienced Senior Network Architect / Lead Network Engineer with extensive expertise in enterprise networking, data center networking, cloud, SDN, network security, and network automation. 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 balancing, wireless networking, and network security solutions. This role will be responsible for network architecture, operational excellence, technology modernization, automation initiatives, and providing L3/SME support for mission-critical network environments. Key Responsibilities Enterprise & Data Center Networking Design, deploy, and support large-scale enterprise and data center networks. Architect and manage Cisco Nexus, Cisco Catalyst, Arista, and Cisco ACI environments. 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 Designs (HLD), Low-Level Designs (LLD), implementation plans, migration strategies, and technical documentation. Perform capacity planning, lifecycle management, and infrastructure optimization. Routing & Switching Design, configure, and troubleshoot: BGP OSPF

EIGRP

Static Routing Route Maps Prefix Lists ACLs Implement and support Layer 2/Layer 3 technologies, including:

STP/RSTP

VTP Port Channels VPC HSRP VRRP VRF Troubleshoot complex routing and switching issues in enterprise and data center environments. Cisco ACI & SDN Design, deploy, and support Cisco ACI environments. Configure and manage: APIC Controllers Tenants EPGs Bridge Domains VRFs Contracts Filters L3Outs Manage Cisco Nexus Dashboard solutions, including: NDO NDFC NDI Perform ACI upgrades, migrations, capacity planning, optimization, and compliance activities. Support VXLAN/EVPN-based data center architectures and SDN transformation initiatives.

WAN & SD-WAN

Design and support enterprise WAN architectures, including: Cisco SD-WAN MPLS

DMVPN

IPSec VPN GRE Tunnels Configure and support Cisco ISR, ASR, and Catalyst 8000 platforms. Manage WAN resiliency, optimization, and modernization initiatives. Troubleshoot complex WAN connectivity and performance issues. Network Security Manage and support: Palo Alto Firewalls Cisco Firepower Cisco Secure Client

TACACS+

RADIUS

Implement and support: Network Segmentation Zero Trust Architecture Micro-Segmentation VPN Technologies Network Access Control (NAC) AAA Services Participate in vulnerability remediation and network security lifecycle initiatives. Load Balancing & Application Delivery Configure and administer:

F5 BIG-IP LTM/GTM

F5 AFM

Citrix NetScaler Azure Load Balancer Implement and support: SSL Offloading Content Switching Load Balancing Policies Health Monitoring Global Traffic Management

DDI - DNS, DHCP & IPAM

Manage enterprise Infoblox DDI solutions. Administer: DNS DHCP IPAM Grid Masters DNS Zones DNS Records DHCP Reservations Support enterprise-wide DNS architecture, availability, security, and service delivery. Wireless Infrastructure Design, implement, and support enterprise Cisco wireless environments. Manage: Cisco Wireless LAN Controllers (WLCs) Cisco Access Points Cisco Prime Aruba Wireless Solutions Implement secure 802.1X authentication and enterprise wireless security solutions. Network Automation Develop and maintain network automation solutions using: Ansible Terraform Python REST APIs Postman Automate: Network provisioning Configuration management Compliance validation Monitoring Reporting Operational workflows Integrate automation frameworks with Cisco ACI, Nexus Dashboard, and SD-WAN environments. Develop reusable automation workflows and support infrastructure-as-code initiatives. Monitoring & Network Operations Support network operations using: SolarWinds ThousandEyes Grafana Cisco DNA Center NetBrain ServiceNow Lead root cause analysis (RCA) and major incident resolution activities. Provide L3/SME support for complex network issues. Drive vulnerability remediation, infrastructure lifecycle management, and operational improvement initiatives. Develop and maintain network standards, runbooks, and operational documentation. Required Technical Skills Networking & Data Center Cisco Nexus 5K/7K/9K Cisco Catalyst 9K Series Arista Switching Cisco ISR/ASR Routers Enterprise LAN/WAN Architecture Data Center Networking Routing & Switching BGP OSPF

EIGRP

MPLS

SD-WAN

VRF Data Center & SDN Cisco ACI

VXLAN

EVPN Cisco Nexus Dashboard NDO NDFC NDI Spine-Leaf Architecture VPC Data Center Interconnect Network Security Palo Alto Cisco Firepower Cisco Secure Client IPSec VPN NAC

TACACS+

RADIUS

AAA Network Segmentation Zero Trust Micro-Segmentation Load Balancing

F5 LTM/GTM

F5 AFM

Citrix NetScaler Azure Load Balancer DDI Infoblox DNS DHCP IPAM Automation Ansible Terraform REST APIs Postman Python preferred Monitoring & Operations SolarWinds ThousandEyes Grafana NetBrain Cisco DNA Center 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 Requirements 10+ years of enterprise and data center network engineering experience. 5+ years of hands-on Cisco ACI and data center architecture experience. Proven experience supporting large-scale, global enterprise environments with mission-critical infrastructure. Experience leading network migration, modernization, transformation, and SDN adoption initiatives. Strong L3/SME troubleshooting and incident management experience. Demonstrated ability to develop network architecture, HLD/LLD documentation, implementation plans, and technical standards. Strong experience collaborating with infrastructure, security, cloud, application, and operations teams. Ampcus is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veterans or individuals with disabilities. #J-18808-Ljbffr Ampcus Inc