We are looking for a Senior Network Engineer to join a dynamic, results-oriented team supporting InfiniBand and Ethernet fabrics in the most demanding data center, AI, storage, and HPC environments. As a Technical Support Engineer, you will be an approachable, proficient communicator who takes ownership of resolving issues while ensuring a high level of customer satisfaction. You will work closely with Engineering, Marketing, and Support teams on complex technical issues.What you will be doing:Tier 3 support for InfiniBand and Ethernet fabrics: installing, supporting, and resolving complex technical issues in large AI/HPC and storage clustersTroubleshooting end-to-end InfiniBand fabrics — subnet management (UFM / OpenSM), routing topology and congestion control.Developing and presenting comprehensive technical solutions to customer problems, including project management of complex fabric installationsProblem reporting, issue replication, and resolution managementResponding to customer technical inquiriesSite visits and conference calls with customers and partnersDeveloping and refining internal processes to improve support efficiency and productivityWhat we need to see:B.Sc. in Computer Science, Software Engineering, or Electrical Engineering, or equivalent experience5+ years providing customer support for hardware & software productsHands-on InfiniBand experience — OR deep Ethernet/RDMA expertise with a demonstrated ability and strong motivation to ramp quickly on InfiniBand (subnet manager, fabric topologies such as fat-tree, RDMA verbs, diagnostics)Extensive knowledge of LAN switching/routing (STP, MSTP, MLAG, VPC, VRRP, LACP) and IP routing (OSPF, BGP, PIM), plus virtualization, EVPN, VXLANLinux experience and scriptingAutomation — AnsibleAbility to work under pressure and support high-level customersExperience operating and configuring major vendors' switches and routersAnalysis and diagnosis of highly complex networking problemsStrong communication, presentation, and oral skills; excellent verbal and written EnglishWays to stand out from the crowd:Deep InfiniBand expertise: UFM, OpenSM, adaptive routing, congestion control, link-layer troubleshooting, ibdiagnet/perftest, ConnectX/BlueField adaptersRDMA, RoCE, and GPUDirect RDMA in production AI/HPC clustersClustering and data-center technologies, including upper-layer protocols (e.g., MPI, NCCL)Knowledge of Linux/Unix at an administration levelEthernet (10/40/100+ GigE) and/or InfiniBand at scale​NVIDIA is widely considered one of the technology world's most desirable employers, with some of the most forward-thinking and hardworking people anywhere. If you're creative, results-oriented, and enjoy having fun — what are you waiting for? Apply today!