GPU Infrastructure Engineer / HPC Engineer

Job Purpose Build and operate large scale GPU compute pods to deliver predictable, high throughput, low latency training and inference services across 10K GPU cluster. Roles & Responsibilities ImplementationStand up multi pod GPU clusters (rack/power/cooling layouts; TOR/leaf connectivity; IB/Ethernet host configs). Implement GPU partitioning (MIG/vGPU profiles) and quota policies for multi tenant environments. Integrate cluster schedulers (Slurm/Kubernetes) with GPU device plugins, node feature discovery, and accounting/quotas. OperationsOwn day 2 operations across firmware/driver/DCGM/NVML lifecycles; execute change windows with zero/low downtime. Capacity planning (GPU/CPU/Memory/NIC) and bin packing strategies for heterogeneous GPU SKUs. Performance & OptimizationTune NCCL/UCX, GPU clocks/persistence, GPU Direct Storage, NUMA/locality, and CUDA runtime parameters. Drive benchmarking and acceptance (HPL, HPL AI, MLPerf like internal suites); track perf regressions with SLOs. Reliability & IncidentLead P0/P1 incident response for GPU, CUDA, or scheduler issues; perform root cause and preventative actions. Act as the primary technical lead during production outages, coordinating cross-functional teams across Networking, GPU Operations, Platform Engineering, Storage, and Application teams to restore services within SLA targets. Perform detailed Root Cause Analysis (RCA) for network, GPU, CUDA, NCCL, RDMA, and scheduler-related failures, identifying underlying causes and implementing preventive and corrective actions. Collaborate with platform and GPU engineering teams to resolve issues impacting CUDA jobs, Kubernetes scheduling, Slurm workload management, GPU resource allocation, and large-scale AI training environments. Define golden images; implement node remediation (cordon/drain/reimage) and auto healing workflows. Security & ComplianceEnforce GPU tenancy isolation (MIG, cgroup/device cgroup, mpsd), secure drivers/containers, SBOM and image scanning. Documentation & EnablementPublish runbooks, performance baselines, and application tuning guides for LLM training and inference. Experience & Educational Requirement BE/B-Tech or equivalent with Computer Science or Electronics & Communication NVIDIA Certified Professional (AI Infrastructure); Linux (RHCE/LPIC) preferred. RELEVANT EXPERIENCE 712 years building/operating HPC/AI GPU clusters at scale; deep CUDA/MIG/vGPU expertise.Proven with H100/B series class GPUs, Slurm and/or Kubernetes device scheduling; NCCL/UCX performance tuning. Tools / Tech CUDA, NCCL, cuDNN, TensorRT; 2. DCGM/NVML, nvidia-smi; 3. Slurm, K8s (device plugin, DaemonSets, NFD); 4. Helm/ArgoCD; 6. GPUDirect Storage; 7. Prometheus/Grafana; 8. ELK/Splunk. .