Hewlett Packard Enterprise

Principal Software Engineer – Scale-Up Networking, GPU-Centric

Hewlett Packard Enterprise

full-time

Posted on:

Location Type: Hybrid

Location: Bangalore • India

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Job Level

Lead

Tech Stack

LinuxNode.js

About the role

  • Architect & Deliver Scale-Up Networking
  • Design and implement GPU-aware networking paths for high-bandwidth, low-latency intra-node communication
  • Develop and optimize GPU → NIC → GPU data movement, shared memory models, and DMA pathways
  • Work with NVIDIA CUDA, NVLink, NCCL, and AMD ROCm, InfinityFabric, RCCL teams to integrate and optimize scale-up communication semantics
  • Drive improvements to DMA engines, BAR mappings, ATS/IOMMU, and GPU memory registration workflows
  • Enhance and extend Libfabric, UCX, CXI, SHMEMX, OpenMPI for GPU-accelerated scale-up workflows
  • Optimize communication collectives, transport layers, and GPU-direct capabilities
  • Characterize and tune multi-NIC per socket, NUMA-zone mapping, GPU locality, CQ/queue design, and CPU/GPU topology optimization
  • Lead upstream contributions to open-source projects (OFI, UCX, OpenMPI, RCCL/NCCL enablement)
  • Partner with HPC/AI ecosystem teams to shape future architectures
  • Own complex debugging across driver, runtime, GPU, kernel, and user-space boundaries
  • Develop profiling workflows using Nsight, ROCm tools, eBPF, perf, etc.

Requirements

  • 10–15+ years building high-performance networking, GPU, or kernel-level software
  • Deep expertise in C/C++, Linux internals, memory management, RDMA, PCIe, IOMMU, ATS, DMA engines
  • Strong understanding of CUDA, ROCm, GPU memory models, P2P, GDS (GPUDirect Storage), GDR (GPUDirect RDMA)
  • Hands-on experience with MPI, SHMEM, Libfabric, UCX, or similar communication stacks
  • Proven experience driving architecture, cross-org technical decisions, and upstream contributions
  • Ability to mentor senior engineers, influence multi-team designs, and own end-to-end delivery.
Benefits
  • Health & Wellbeing
  • Personal & Professional Development
  • Unconditional Inclusion
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
C/C++Linux internalsmemory managementRDMAPCIeIOMMUDMA enginesCUDAROCmMPI
Soft Skills
mentoringinfluencingtechnical decision-makingend-to-end delivery