Senior Packet Core Network Engineer Jobs in Dallas, TX

The Position

We're looking for a Senior Network Engineer to own and evolve our enterprise network across multi-site and cloud environments. You'll be a key technical voice shaping infrastructure strategy, driving security posture through zero-trust principles, and ensuring high availability for business-critical systems - all while working remotely on a collaborative, senior-level team.

Key Responsibilities

Design & Architecture

• Architect scalable, resilient network solutions including routing/switching, SD-WAN, firewalls, VPN, QoS, and zero-trust segmentation.
• Define requirements, evaluate technologies, and lead infrastructure changes from design through implementation.
• Develop and maintain business continuity and disaster recovery plans for all network components.

Operations & Maintenance

• Perform proactive maintenance - patching, upgrades, tuning, and health monitoring across the networking estate.
• Manage vulnerability findings and vendor security advisories for network equipment and systems.
• Maintain accurate network documentation, configuration baselines, and topology diagrams.
• Own and resolve network-related incidents and service requests, driving issues to resolution.

Collaboration & Strategy

• Partner with security, infrastructure, and application teams to support firm-wide initiatives.
• Evaluate emerging technologies and translate their impact into actionable recommendations.
• Serve as a technical mentor and backup resource across the Network Engineering team.
• Communicate clearly with technical and non-technical stakeholders at all levels.

Qualifications

• 10+ years of hands-on network engineering experience across multi-site enterprise environments
• Bachelor's degree in Computer Science, Information Technology, or a related field - or equivalent professional experience. 
• Palo Alto Firewalls - Production deployment, policy management, and troubleshooting of Palo Alto NGFW (Panorama experience a strong plus).
• Cisco ACI - Hands-on experience with Nexus 9300/9000 series in ACI mode - fabric design, EPG/contract configuration, and troubleshooting.
• Proven ability to architect, implement, and troubleshoot complex, multi-vendor network infrastructure.
• Strong documentation habits - you leave networks better documented than you found them.
• Ability to translate ambiguous business requirements into clear, implementable technical designs.
• Excellent communication skills - comfortable presenting to both engineers and executives.
• Strong project management instincts with the ability to juggle multiple workstreams independently.
• A collaborative, team-first mentality balanced with the ability to drive work autonomously.
• Routing & Switching
  • Deep expertise in enterprise routing protocols (OSPF, BGP) and switching (VLANs, port channels, spanning tree, QoS) across multi-site environments.
  • Cisco certification at the professional or expert level (CCNP, CCDP, or CCIE) strongly preferred.
  • Experience in professional services, financial services, or legal industry environments.
  • Familiarity with network automation tooling (Ansible, Python/Netmiko, Terraform for network infra).
  • Experience with public cloud networking (AWS, Azure) and hybrid connectivity patterns.
  • Exposure to Panorama for centralized Palo Alto management at scale.
• Core Networking
  • SD-WAN (Silver Peak / HPE Aruba EdgeConnect) - deployment, policy, and optimization
  • DMVPN, IPSec VPN, and secure remote access architectures
  • Load balancing (Citrix NetScaler / ADC) - configuration, SSL offload, and health monitoring
  • Wireless networking via Cisco Meraki - deployment, RF planning, and troubleshooting
  • Network tapping and packet capture solutions for visibility and forensics
• Security & Zero Trust
  • Zscaler (ZIA/ZPA) - implementation, policy configuration, and troubleshooting
  • ACL development and firewall policy lifecycle management
  • Zero-trust network segmentation principles and implementation
  • WAF configuration and proxy infrastructure
• Collaboration & Voice
  • Cisco Call Manager (CUCM) and Unity Connection - administration and troubleshooting
  • Network monitoring and management platforms (SolarWinds, PRTG, or equivalent)