Cornelis Networks, Inc.

Cornelis Networks, Inc.

Senior Software Engineer – AI/HPC Middleware

New York, New York, United States · Senior · Full-time

Sponsorship not specifiedDetected 16 hours ago
C++CLinuxProduct ManagementProduct StrategyLeadershipCommunicationCollaboration

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About the role

  • Our differentiated architecture seamlessly integrates hardware, software and system level technologies to maximize the efficiency of GPU, CPU and accelerator-based compute clusters at any scale.
  • As a global organization, our team spans multiple U.S. states and six countries, and we continue to expand with exceptional talent in onsite, hybrid, and fully remote roles.
  • This role focuses on enabling and optimizing HPC middleware (MPI/SHMEM) and AI middleware (collective communication libraries / CCL, e.g., NCCL/RCCL and related stacks) over Cornelis Networks' interconnects.

Responsibilities

  • AI/HPC Middleware Enablement & Optimization: Implement and help optimize features for HPC middleware (HPI and SHMEM) and AI middleware (CCL stacks ie: NCCL/RCCL and related collective communication libraries)
  • Cross-Stack Collaboration & Performance Validation: Collaborate with kernel/driver and switch teams to help deliver end-to-end performance aligned to the Cornelis product roadmap

Requirements

  • 6+ years of experience in systems programming in C/C++ on Linux
  • Hands-on experience with HPC middleware internals (Open MPI, MPICH, MVAPICH, and/or SHMEM) or optimizing collective communications for AI, including NCCL/RCCL, CUDA/ROCm) and/or other CCL stacks.
  • Working knowledge of transport/integration layers such as OFI/libfabric, UCX, verbs-style concepts.
  • Experience contributing to open-source projects.
  • Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience).

Nice to have

  • Familiarity with Ultra Ethernet (UEC/UET) specifications.
  • Experience with RoCEv2, congestion control, and/or Ethernet-based RDMA deployments.
  • Experience with cluster-scale benchmarking, profiling, and optimization.
  • Background with HPC fabrics, such as Omni-Path.
  • Cornelis Networks does not accept unsolicited resumes from headhunters, recruitment agencies, or fee-based recruitment services.
  • We encourage applications from all qualified candidates and will accommodate applicants' needs under the respective laws throughout all stages of the recruitment and selection process.

Skills

  • AI/HPC Middleware Enablement & Optimization:
  • Implement and help optimize features for
  • HPC middleware (HPI and SHMEM) and AI middleware (CCL stacks ie:

Compensation

  • We offer a competitive compensation package that includes equity, cash, and incentives, along with health and retirement benefits.

Company info

  • Backed by top-tier venture capital and strategic investors, we are committed to innovation, performance and scalability - solving the world's most demanding computational challenges with our next-generation networking solutions.
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