Machine Learning Performance Engineer

OverviewKeysight is at the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization. Our ~15,000 employees create world-class solutions in communications, 5G, automotive, energy, quantum, aerospace, defense, and semiconductor markets for customers in over 100 countries. Learn more about what we do.Our award-winning culture embraces a bold vision of where technology can take us and a passion for tackling challenging problems with industry-first solutions. We believe that when people feel a sense of belonging, they can be more creative, innovative, and thrive at all points in their careers.The AI Models and Data Science team at Keysight AI Labs is hiring a ML Performance Engineer to make our training and inference stacks as fast as the math allows. You'll own end-to-end performance: profiling training workloads on multi-GPU clusters, writing custom CUDA kernels and LibTorch C++ extensions for hot paths, and optimizing inference for embedding in production software where every millisecond matters.This role sits at the intersection of ML, systems engineering, and HPC. You'll work directly with MLEs and data scientists driving the modeling work, and with the engineering teams shipping these models into Keysight products.ResponsibilitiesProfile and optimize training workloads — multi-GPU scaling efficiency, throughput, memory footprint, mixed precision, gradient checkpointing tradeoffsProfile and optimize inference for low-latency, high-throughput deployment — quantization, graph optimization, kernel fusion, runtime selectionWrite custom CUDA kernels and LibTorch (PyTorch C++) extensions to accelerate hot paths in both training and inferenceBuild and maintain serving infrastructure using ONNX Runtime, TensorRT, and similar — including C++ integration paths for embedding models inside production softwarePartner with MLEs and data scientists on perf-aware architecture choices; partner with product engineering on deployment, versioning, and monitoringEstablish performance SLAs and regression tests so models stay fast as they evolveQualifications4+ years in ML engineering, performance engineering, or HPC, with substantial production ML experienceStrong Python and C++ — including LibTorch / PyTorch C++ extensions in productionHands-on experience optimizing both training and inference workloads (not just one)CUDA experience required — comfortable profiling GPU code with Nsight and reasoning about occupancy, memory hierarchy, and kernel-level tradeoffsProduction deployment experience with ONNX Runtime, TensorRT, or equivalent inference runtimesSolid software engineering fundamentals: testing, versioning, code review, monitoringExperience with Docker and container-based deploymentCareers Privacy StatementKeysight Technologies Inc. is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability or any other protected categories under all applicable laws.The level of role and salary will be based on applicable experience, education and skills; Most offers will be between the minimum and the midpoint of the Salary Range listed below.California Pay Range: MIN $160,160- MAX $266,930Note: For other locations, pay ranges will vary by region.US Employees May Be Eligible For The Following Benefits Medical, dental and vision Health Savings Account Health Care and Dependent Care Flexible Spending Accounts Life, Accident, Disability insurance Business Travel Accident and Business Travel Health 401(k) Plan Flexible Time Off, Paid Holidays Paid Family Leave Discounts, Perks Tuition Reimbursement Adoption Assistance ESPP (Employee Stock Purchase Plan)