Senior Network Engineer

Overview:

Location: Plano, Texas (Onsite - 4 days/week)

Role: Senior Network Engineer

Experience Required: 10+ Years

Job Summary

We are seeking an experienced Senior Network Engineer with strong expertise in enterprise networking, data center infrastructure, and hybrid cloud connectivity. The ideal candidate will have hands-on experience with Cisco Nexus switching, enterprise firewalls (Fortinet FortiGate and Palo Alto), and Azure networking services such as ExpressRoute . This role will be responsible for designing, implementing, and supporting secure, scalable, and highly available network environments across on-premises data centers and Microsoft Azure cloud platforms.

Key Responsibilities

Network Infrastructure Design & Implementation

• Design, implement, and maintain enterprise data center network infrastructure , including switching, routing, and segmentation.
• Configure and manage Cisco Nexus switches supporting Layer 2 and Layer 3 networking, including VLANs, vPC, STP, and high availability architectures .
• Implement and troubleshoot routing protocols such as BGP and OSPF to ensure stable and optimized network traffic.

Firewall & Network Security

• Manage and administer Fortinet FortiGate and Palo Alto firewalls , including:
  • Security policy configuration
  • NAT setup
  • VPN connectivity
  • Traffic inspection and monitoring
• Ensure proper network segmentation, access controls, and infrastructure-level security .

Hybrid Cloud Connectivity

• Configure and maintain hybrid connectivity between on-premise data centers and Microsoft Azure .
• Implement and support Azure Virtual Networks and Azure ExpressRoute connectivity.
• Support secure and reliable communication between cloud workloads and enterprise data centers .

Troubleshooting & Network Operations

• Diagnose and resolve complex network, firewall, and cloud connectivity issues affecting servers, applications, and database systems.
• Perform traffic path analysis, routing validation, and firewall log analysis during production incidents.
• Conduct root cause analysis for network outages or performance issues.

Monitoring & Performance Optimization

• Monitor network performance and availability using network monitoring and observability tools .
• Ensure high availability and minimal downtime for enterprise network services.

Cross-Team Collaboration

• Collaborate with infrastructure, cloud, security, and system engineering teams to maintain stable enterprise IT operations.
• Support critical infrastructure services including SQL database connectivity, backup routing, and application traffic flows .

Required Skills

• 10+ years of experience in enterprise networking and network engineering .
• Strong hands-on experience with Cisco Nexus switching platforms .
• Deep understanding of Layer 2 and Layer 3 networking concepts including VLANs, trunking, routing, and segmentation.
• Experience with routing protocols such as BGP and OSPF .
• Hands-on experience managing Fortinet FortiGate and Palo Alto firewalls .
• Experience supporting Azure networking services including Virtual Networks and ExpressRoute .
• Strong troubleshooting experience in hybrid environments (on-premise + Azure cloud) .
• Experience supporting enterprise infrastructure networks and application connectivity .

Preferred Skills

• Experience with data center high availability architectures and redundancy design .
• Knowledge of network monitoring and observability tools .
• Understanding of enterprise security best practices and network segmentation strategies .
• Experience supporting critical enterprise systems including database and backup traffic routing .

Skills

• Network Engineering
• Cisco Nexus
• BGP / OSPF
• Fortinet FortiGate
• Palo Alto Firewall
• Azure ExpressRoute
• Network Security