Senior HPC Network Engineer (Colombia) (Medellín)

We are seeking a Senior HPC Network Engineer to support advanced AI, research, and Kubernetes‑based GPU infrastructure for a major general technology client. The role focuses on architecting, operating, and optimizing high‑performance network fabrics for large‑scale LLM and distributed AI workloads, including InfiniBand/RDMA, high‑speed Ethernet, Kubernetes networking, host‑side GPU networking, SmartNIC/DPU technologies, and deep network observability. Responsibilities
- Architect, operate, and troubleshoot high‑performance InfiniBand/RDMA and Ethernet fabrics for large‑scale GPU clusters and distributed AI/LLM workloads.
- Design and evaluate cluster network topologies, including Fat‑tree, Clos, Rail‑optimized, and Dragonfly, based on workload scale and performance needs.
- Optimize host‑side networking, including NIC configuration, drivers, firmware, IRQ affinity, NUMA placement, PCIe topology, and GPU‑to‑NIC communication paths.
- Tune and troubleshoot RDMA/RoCE, NCCL/MSCCL, and collective communication performance for multi‑node GPU training workloads.
- Design and maintain Kubernetes networking for GPU clusters, including CNI plugin integration. Qualifications
- Strong hands‑on experience with InfiniBand NDR/HDR and next‑generation fabrics, RDMA/RoCE, and NVIDIA/Mellanox networking.
- Proficiency with NCCL/MSCCL communication patterns, Linux host networking, PCIe/GPU/NIC topology, and Kubernetes networking for GPU clusters.
- Experience designing and evaluating large‑scale cluster topologies and optimizing network performance for AI workloads. Postúlate en Kit Empleo: kitempleo.com.co/empleo/1b3uxb