Senior Network Security Engineer - AI / HPC Data Center

Location: Dallas, TX (Hybrid) – Relocation Available to non-local candidates. Type: Direct Hire This position requires applicants to be currently authorized to work in the U.S. without employer sponsorship. We are unable to sponsor or take over sponsorship of employment visas at this time

OVERVIEW

We are seeking a Senior Network Engineer to join a Network & Security Platform team responsible for a global network footprint across data center, co-location, and enterprise environments. This role is heavily focused on securing and optimizing large-scale data center networks supporting high-performance compute and mission-critical workloads. The position combines deep networking expertise with hands‑on responsibility for network security controls, including firewalls, segmentation, proxy services, and load balancing within complex, multi-tenant environments. The ideal candidate is a network engineer with strong security experience—someone who understands how to design, implement, and operate secure, high-performance network infrastructure at scale.

KEY RESPONSIBILITIES

Network Engineering & Operations Design, implement, and support scalable, resilient data center network infrastructure Operate across routing, switching, firewall, and WAN environments Lead troubleshooting and resolution of complex network and security-related issues Implement architectures leveraging EVPN, VXLAN, and MPLS Support WAN environments including SD‑WAN and segment routing Work across Cisco and Arista platforms (IOS, IOS‑XR, NX‑OS, EOS) Network Security Engineering Design and manage network security controls within data center environments Configure and support firewalls, load balancers, proxies, and segmentation strategies Implement multi‑tenant network isolation and secure connectivity patterns Partner with security teams to align on policies, standards, and risk mitigation Automation & DevOps Automate network and security operations using Python, Ansible, Git, and Jinja2 Support Infrastructure‑as‑Code (IaC) and CI/CD for network provisioning Improve operational efficiency through automation and tooling Monitoring, Performance & Reliability Monitor network and security health using telemetry and observability tools Perform packet analysis, performance tuning, and root cause analysis Conduct audits to ensure compliance with standards and best practices Partner with Data Center, Security, and Infrastructure teams Support high-performance compute environments (HPC/AI workloads where applicable) Mentor junior engineers and lead during incident response scenarios

REQUIRED EXPERIENCE

Strong hands‑on experience with Cisco and Arista platforms Deep knowledge of BGP, OSPF, EVPN, VXLAN, and MPLS Experience with network security technologies (firewalls, proxies, load balancers, segmentation) Strong troubleshooting skills including packet analysis and performance optimization Experience working in Agile or DevOps environments

TECHNICAL SKILLS

Network monitoring, telemetry, and observability platforms Infrastructure‑as‑Code (IaC) and CI/CD practices

PREFERRED

Experience with InfiniBand or HPC environments CCNP or equivalent required; CCIE or advanced certifications preferred #J-18808-Ljbffr GTN Technical Staffing