Senior Network Engineer

Who We AreLightning AI is the company behind PyTorch Lightning. Founded in 2019, we build an end-to-end platform for developing, training, and deploying AI systems - designed to take ideas from research to production with less friction.Through our merger with Voltage Park, a neocloud and AI Factory, Lightning AI combines developer-first software with cost-efficient, large-scale compute. Teams get the tools they need for experimentation, training, and production inference, with security, observability, and control built in.We serve solo researchers, startups, and large enterprises.

Lightning AI operates globally with offices in New York City, San Francisco, Seattle, and London, and is backed by Coatue, Index Ventures, Bain Capital Ventures, and Firstminute.What We’re Looking ForLightning 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.What You'll DoDesign and deploy scalable spine/leaf network architectures for AI data centersEngineer high-performance Ethernet fabrics supporting GPU clusters and AI workloadsBuild and maintain EVPN/VXLAN, BGP, and high-speed routing environmentsOptimize east-west traffic flows for AI training and inference operationsSupport RoCE/RDMA networking and low-latency transport technologiesSupport backbone, DCI, WAN, and edge connectivity solutions.Collaborate with compute, storage, AI platform, and operations teams to deliver integrated infrastructure solutionsDevelop automation and Infrastructure-as-Code (IaC) solutions for network provisioning and operationsTroubleshoot complex network, performance, and congestion issues across distributed environmentsImprove network observability, telemetry, and operational visibilityYou have hands-on experience working with SONiC and Junos.Experience with cloud networking technologies including VPC’s, NFV, Direct Connect, Cloud ConnectYou enjoy working with a small group of friendly, highly motivated, high-execution colleaguesYou’re comfortable with a high degree of autonomy, can independently prioritize your work and understand how it maps to the overall needs and goals of the companyYou’re knowledgeable in your domain but also enjoy wearing multiple hats and venturing outside of your comfort zone when the need arisesYou value the ability to write well and understand the importance of good documentationWhat You’ll NeedRequired

Qualifications

Experience with Cumulus NOS5+ years of experience in large-scale data center networkingExperience in spine-leaf architectures and L3 fabricsExperience with BGP, EVPN, VXLANExperience operating high-performance computing (HPC) or GPU-dense environmentsExperience designing networks for hyperscalers, neoclouds, or high-scale SaaS infrastructureExperience in automation with (Python, Ansible, Terraform, or similar)Experience with network observability tooling and telemetry pipelinesProven ability to design systems that scale to thousands of nodesStrong documentation and communication skillsIdeal ExperienceFamiliarity with NVIDIA networking (Spectrum, Quantum, BlueField, etc.)Familiarity with RDMA, RoCE, or InfiniBand fabricsExperience with multi-region backbone designExposure to bare-metal provisioning systemsExperience working in high-growth infrastructure startupsThis role is fully remote out of the continental U.S. with occasional team and company offsites. We are not able to provide visa sponsorship for this role at this time. We are committed to offering competitive compensation that reflects the value each team member brings to our mission.

Final offers are based on factors such as experience, skills, geographic location, and role expectations. In addition to base salary, our total rewards package for eligible roles includes a discretionary bonus, a meaningful equity component, and comprehensive

Benefits

.The anticipated annual base salary range for this role is: -

Benefits

and PerksWe offer a comprehensive and competitive

Benefits

package designed to support our employees’ health, well-being, and long-term success.

Benefits

may vary by location, team, and role.

Benefits

include: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 holidaysPaid parental leaveProfessional development supportWellness and work-from-home stipendsFlexible work environmentAt Lightning AI, we are committed to fostering an inclusive and diverse workplace. We believe that diverse teams drive innovation and create better products. We provide equal employment opportunities to all employees and applicants without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic.

We are dedicated to building a culture where everyone can thrive and contribute to their fullest potential.We are committed to offering competitive compensation that reflects the value each team member brings to our mission. Final offers are based on factors such as experience, skills, geographic location, and role expectations. In addition to base salary, our total rewards package for eligible roles includes a discretionary bonus, a meaningful equity component, and comprehensive

Benefits

.The anticipated annual base salary range for this role is:$150,000 - $190,000 USD

Benefits

and PerksWe offer a comprehensive and competitive

Benefits

package designed to support our employees’ health, well-being, and long-term success.

Benefits

may vary by location, team, and role.

Benefits

include: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 holidaysPaid parental leaveProfessional development supportWellness and work-from-home stipendsFlexible work environmentAt Lightning AI, we are committed to fostering an inclusive and diverse workplace. We believe that diverse teams drive innovation and create better products. We provide equal employment opportunities to all employees and applicants without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic.

We are dedicated to building a culture where everyone can thrive and contribute to their fullest potential.Originally posted on Himalayas