Data Center Network Engineer

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.

• 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
• 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

• 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

• 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

• Partner with Data Center, Security, Dev Ops, 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
• 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

• 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, Dev Ops-oriented, or infrastructure automation environments
• Ability to operate effectively in fast-paced, mission-critical environments

• 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

• Experience with Infini Band 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