Role Description Lightning AI is seeking a Senior Network Engineer with hands-on Cumulus Linux expertise to build and scale the network backbone behind our AI infrastructure platform. You’ll play a critical role in designing highly reliable, automated data center networks that support some of the most demanding AI workloads in the world. - Design and deploy scalable spine/leaf network architectures for AI data centers - Engineer high-performance Ethernet fabrics supporting GPU clusters and AI workloads - Build and maintain EVPN/VXLAN, BGP, and high-speed routing environments - Optimize east-west traffic flows for AI training and inference operations - Support RoCE/RDMA networking and low-latency transport technologies - Support backbone, DCI, WAN, and edge connectivity solutions - Collaborate with compute, storage, AI platform, and operations teams to deliver integrated infrastructure solutions - Develop automation and Infrastructure-as-Code (IaC) solutions for network provisioning and operations - Troubleshoot complex network, performance, and congestion issues across distributed environments - Improve network observability, telemetry, and operational visibility Qualifications - Experience with Cumulus NOS - 5+ years of experience in large-scale data center networking - Experience in spine-leaf architectures and L3 fabrics - Experience with BGP, EVPN, VXLAN - Experience operating high-performance computing (HPC) or GPU-dense environments - Experience designing networks for hyperscalers, neoclouds, or high-scale SaaS infrastructure - Experience in automation with (Python, Ansible, Terraform, or similar) - Experience with network observability tooling and telemetry pipelines - Proven ability to design systems that scale to thousands of nodes - Strong documentation and communication skills Requirements - Familiarity with NVIDIA networking (Spectrum, Quantum, BlueField, etc.) - Familiarity with RDMA, RoCE, or InfiniBand fabrics - Experience with multi-region backbone design - Exposure to bare-metal provisioning systems - Experience working in high-growth infrastructure startups Benefits - Comprehensive medical, dental and vision coverage (U.S.); Private medical and dental insurance (U.K.) - Retirement and financial wellness support (U.S.); Pension contribution (U.K.) - Generous paid time off, plus holidays - Paid parental leave - Professional development support - Wellness and work-from-home stipends - Flexible work environment

Role Description We are seeking a talented Network Engineer IV to join our engineering team. This role is vital for the design, integration, and maintenance of advanced tactical and strategic communication networks within the military framework. The successful candidate will possess extensive experience in network engineering and a proven track record of delivering high-quality solutions. Key Responsibilities: - Network Design & Installation: Design, plan, install, integrate, and maintain backbone core-area tactical and strategic communications networks, including elements of the Defense Information Systems Network (DISN) and the Global Information Grid (GIG). - Requirements Analysis: Gather requirements from users, Operational Need Statements, and Capability Production Documents (CPD) for Army tactical communications systems, translating them into cost-efficient, standards-based technical solutions. - Architecture Development: Develop network architectures for adjacent, higher, and lower units, including interfaces with allied nations, other government agencies, and commercial service providers. - Engineering & Integration: Lead the engineering design, development, integration, installation, operation, and maintenance of tactical networks. Provide support for integrating Data/Voice/Video/Telephony within the Tactical Network. - Documentation & Reporting: Prepare engineering documentation, assist in the development of technical requirements, specifications, plans, and reports. Conduct independent assessments and provide systems engineering support. - Technical Support: Offer technical support in PM TN equipment labs, develop equipment and network configurations, and facilitate technology insertion testing relevant to emerging PM TN Networks requirements and capabilities. - Virtualization & Storage Technologies: Utilize knowledge of virtualization and storage technologies, including VMware, EMC, NetApp, Microsoft, Dell, and HP. - Cisco Systems Expertise: Demonstrate proficiency with Cisco IOS and NXOS, Cisco ISE, Cisco UCS Networking and Configuration, and Cisco ASA. Utilize routing protocols such as BGP, OSPF, RIP, and EIGRP, and possess experience with multicast, LANs, and VLANs. - VOIP & Protocol Analysis: Serve as a subject matter expert in VOIP, Cisco Call Manager, Call Manager Express, and Redcom Sigma Core. Conduct network protocol analysis using tools like Sniffer, Wireshark, or similar applications. - Field Support & Collaboration: Provide technical expertise at field locations as required and ensure effective collaboration with other teams and stakeholders. Qualifications - Bachelor’s degree in Engineering, Testing, or a related field. - 8+ years of tactical network engineering experience in a military or similar environment. - Proven expertise in network design, integration, and troubleshooting. - Technical certifications (e.g., Cisco CCNP or similar) are preferred. Requirements - Active Secret clearance. - Strong understanding of current and future tactical and strategic military communications networks, including architecture, protocols, security, network management, and physics. - Familiarity with Army Software Baselines and Architectures, and experience working with Microsoft and Active Directory. - Proven ability to analyze and troubleshoot complex network issues and provide effective technical solutions. - Excellent communication skills and the ability to work collaboratively in a team-oriented environment. Benefits - Opportunities for career growth through training and development. - Attractive comprehensive benefit package including health and welfare plans and financial products. - Referral bonus program and other various employee awards.

• Provide advanced technical support for telecommunications and network operations supporting Priority Services program activities • Monitor network performance, telecommunications service availability, and operational metrics to identify trends and potential service issues • Analyze network and telecommunications performance data and provide recommendations to improve service reliability, resiliency, and operational effectiveness • Support telecommunications carrier integration, coordination, and operational support activities • Troubleshoot network and telecommunications issues and participate in root cause analysis and corrective action efforts • Support testing, validation, and operational readiness activities for telecommunications services, network infrastructure, and carrier-supported solutions • Assist with network upgrades, service enhancements, technology refresh initiatives, and modernization efforts • Support implementation and maintenance of network monitoring, reporting, and performance management capabilities • Maintain technical documentation, network diagrams, standard operating procedures, and operational reports • Support incident management, outage investigations, and service restoration activities as required • Participate in technical reviews, engineering discussions, working groups, and program meetings • Coordinate activities with Government stakeholders, telecommunications carriers, service providers, vendors, and technical teams • Support compliance with security, operational, and contractual requirements • Provide technical recommendations and subject matter expertise supporting program objectives and customer requirements • Perform additional duties and special projects as assigned

• Manage local area networks (LAN), wide area networks (WAN), and other related infrastructures. • Set up and configure network hardware (Palo Alto, Cisco, BIG-IP, and Arista) (firewalls, load balancers, routers, switches, wireless access points, etc.). • Responsible for the escalations occurring in daily operations, including business-as-usual service and change requests, incident investigation, remediation, troubleshooting, and monitoring of network services, local and wide area network connections, and Datacenter. • Rotational on-call is required to support 24/7 important and production systems. • Participate in projects, design, implementation, installation, and configuration of Network Infrastructure systems. • Continuously monitor the network's performance to ensure stability and resolve issues promptly. • Conduct regular network security audits and ensure compliance with security policies. • Plan and execute hardware and software upgrades and patches as necessary to maintain optimal network performance. • Maintain detailed network documentation for all configurations, procedures, and hardware inventories. • Document troubleshooting steps and network modifications. • Work closely with IT teams, vendors, and other departments to ensure the network meets the organization's needs. • Conduct regular analysis of network traffic and performance metrics. • Identify potential bottlenecks, optimize network performance, and recommend improvements.