About the role

Principal Software Engineer developing innovative libfabric solutions within HPE's high performance computing unit. Collaborating on cutting-edge technology to redefine data-intensive workloads.

Responsibilities

Architect and implement libfabric CXI providers (user-space and kernel-assisted paths): Endpoint, MR, CQ, and queue models SR-IOV-aware abstractions and resource sharing
Develop and maintain libcxi and related user-space libraries: Efficient interaction with the CXI User Driver Retry handling, error propagation, and performance tuning
Enable and optimize CXI support across ecosystem components: MPI (OpenMPI, MPICH) NCCL / RCCL / GPU-aware communication SHMEM, storage, and AI frameworks
Drive performance engineering: Latency, bandwidth, and scaling across multi-NIC and multi-GPU systems Benchmarking, profiling, and customer workload analysis
Collaborate with kernel driver teams to co-design clean, scalable APIs
Contribute to upstream communities (libfabric, OpenMPI, NCCL) as appropriate
Provide technical leadership through design reviews, mentoring, and roadmap definition

10+ years of experience in systems or user-space networking software
Strong expertise in: libfabric, RDMA concepts, or high-performance communication APIs
C/C++ systems programming
Deep understanding of user/kernel interaction models and performance tradeoffs
Experience debugging complex distributed and multi-node systems
Experience with HPC or AI communication stacks (MPI, NCCL, SHMEM)
GPU-aware networking and GPUDirect-style architectures
Familiarity with virtualization or SR-IOV impacts on user-space libraries
Hands-on development experience with carrier-grade or data-center NOS platforms, such as: Cisco IOS-XR Juniper Junos Arista EOS Or equivalent Linux-based network operating systems
Strong understanding of Linux kernel and user-space interactions in networking stacks: Netlink, netdev, sockets, offload paths
Kernel modules, drivers, or platform abstraction layers
Experience working with high-performance data plane components, including: Packet processing pipelines Queueing, scheduling, QoS, and congestion management Hardware offloads and ASIC-facing software layers
Alternate / Equivalent Skill Set (Network Operating Systems Background): Candidates with a strong Network Operating System (NOS) background may be considered, provided they demonstrate deep systems expertise and the ability to work close to hardware and performance-critical paths.

Health & Wellbeing: We strive to provide our team members and their loved ones with a comprehensive suite of benefits that supports their physical, financial and emotional wellbeing.
Personal & Professional Development: We also invest in your career because the better you are, the better we all are. We have specific programs catered to helping you reach any career goals you have — whether you want to become a knowledge expert in your field or apply your skills to another division.
Unconditional Inclusion: We are unconditionally inclusive in the way we work and celebrate individual uniqueness. We know varied backgrounds are valued and succeed here. We have the flexibility to manage our work and personal needs. We make bold moves, together, and are a force for good.