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Hybrid Senior Software Engineer – Libfabric, User-Space Networking
Posted 1 hour ago
About the role
- Senior Software Engineer implementing libfabric and user-space networking solutions for HPE. Focused on high-performance computing and data-intensive workloads with a collaborative team.
Responsibilities
- 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
- Collaborate with kernel driver teams to co-design clean, scalable APIs
Requirements
- 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
- Preferred Qualifications: 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
- Alternate / Equivalent Skill Set (Network Operating Systems Background) candidates with a strong Network Operating System (NOS) background may be considered.
Benefits
- Health & Wellbeing: comprehensive suite of benefits that supports physical, financial and emotional wellbeing.
- Personal & Professional Development: specific programs to help reach career goals and develop skills.
- Unconditional Inclusion: inclusive work environment that values varied backgrounds and celebrates individual uniqueness.
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