Senior Network Engineer

Senior Network Engineer Location: Dallas, TX | Hybrid Relocation: Available for non-local candidates Type: Direct Hire Compensation Base salary: $150, 000 –$210, 000 + performance bonus Benefits: 100% company-paid benefits Overview GTN is seeking a Senior Network Engineer to join a Network and Security Platform Management team responsible for a global network footprint spanning office, data center, and co-location environments. This role focuses on ensuring performance, scalability, and resilience across large-scale data center networks supporting complex compute, research, and high-performance infrastructure workloads. The Senior Network Engineer will play a key role in implementing modern networking solutions, driving automation, improving reliability, and supporting highly available infrastructure in a fast-paced, mission-critical environment. The ideal candidate brings deep expertise in data center networking, strong hands-on experience with Cisco and Arista technologies, and a passion for automation, troubleshooting, and continuous improvement. Key Responsibilities Network Engineering & Operations •Design, implement, and maintain scalable, resilient data center network infrastructure •Support enterprise, data center, and co-location environments across routing, switching, firewall, and WAN domains •Lead troubleshooting and break/fix efforts for complex network issues across global infrastructure •Support highly available network environments where uptime, performance, and operational discipline are critical Data Center Networking & Architecture •Implement and manage data center network architectures leveraging EVPN, VXLAN, MPLS, and modern routing protocols •Support WAN environments including SD-WAN, segment routing, and multitenant network designs •Work hands-on with Cisco and Arista platforms across IOS, IOS-XR, NX-OS, and EOS •Contribute to network design reviews, standards, documentation, and architecture improvements Automation & DevOps •Automate network operations using tools such as Python, Ansible, Git, and Jinja2 •Support Infrastructure-as-Code practices and CI/CD pipelines for network provisioning and configuration management •Improve operational efficiency through automation, tooling, repeatable processes, and documentation •Partner with engineering teams to reduce manual work and improve network deployment consistency Monitoring, Performance & Reliability •Monitor and proactively manage network health using telemetry and observability platforms •Perform packet analysis, performance tuning, and root cause analysis for network issues •Conduct regular audits to ensure compliance with internal standards, operational procedures, and best practices •Identify reliability gaps and help drive improvements across performance, resiliency, and scalability Cross-Functional Collaboration •Partner with Data Center, Security, DevOps, Platform, and Infrastructure teams to align on network architecture and operations •Collaborate with engineering teams to deliver high-quality designs and support rollout of strategic initiatives •Support large-scale compute environments, including HPC infrastructure where applicable •Communicate technical issues clearly to both engineering and operational stakeholders Leadership & Mentorship •Mentor junior engineers and promote knowledge sharing across the team •Act as a technical leader during incident response and critical troubleshooting scenarios •Help establish standards, best practices, and repeatable processes for network operations and engineering Required Experience •Proven experience designing, implementing, and supporting large-scale enterprise or data center networks •Strong hands-on expertise with Cisco and Arista networking platforms, including IOS, IOS-XR, NX-OS, and EOS •Deep understanding of routing and switching protocols including BGP, OSPF, EVPN, VXLAN, and MPLS •Experience supporting WAN technologies including SD-WAN, segment routing, and multitenant environments •Strong troubleshooting skills, including packet analysis, performance optimization, and root cause analysis •Experience working in Agile, DevOps-oriented, or infrastructure automation environments •Ability to operate effectively in fast-paced, mission-critical environments Technical Skills •Network automation experience using Python, Ansible, Jinja2, and Git •Experience with network monitoring, telemetry, and observability platforms •Familiarity with Infrastructure-as-Code and CI/CD practices •Strong understanding of data center networking, routing, switching, WAN, and network reliability principles Preferred Experience •Experience with InfiniBand networking and large-scale HPC environments •CCNP or equivalent certification preferred;CCIE or advanced certifications a strong plus •Experience supporting high-performance, research-driven, AI/ML, or large-scale compute environments •Exposure to security, segmentation, firewall, or load-balancing technologies in data center environments