Staff Machine Learning Engineer - LLM Quantization & Deployment
Summary
Build and deploy quantized large language models for in-vehicle AI, focusing on PTQ, QAT, and low-bit inference to ensure numerical consistency and performance on XPENG’s Turing AI chip.
Key Responsibilities
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Develop VLA inference models, ensure numerical consistency with training models, and productionize LLM quantization methods, including PTQ, QAT, mixed-precision inference, INT8, FP4, and lower-bit techniques.
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Develop production-quality Python code with strong testing, observability, reproducibility, and failure handling.
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Build robust model export, calibration, benchmarking, validation, and deployment pipelines.
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Engage early with the VLA model research team to establish performance estimates and prove model feasibility.
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Curate evaluation datasets and establish a comprehensive metric suite to systematically benchmark VLA performance.
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Analyze numerical errors, accuracy regressions, and performance trade-offs.
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Develop PTQ and QAT orchestration workflows.
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Serve as the primary interface with field-testing and simulation teams for issue triage and autonomous driving performance sign-off.
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Collaborate with the in-vehicle software team on latency analysis and issue triage.
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Collaborate with the training infrastructure team to develop QAT and model distillation.
Basic Qualifications
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Master in CS/CE/EE, or equivalent, with 3-5 years of industry experience.
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Strong understanding of Transformer architectures and LLM inference.
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Hands-on experience quantizing or deploying deep learning models in production.
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Proficiency with PyTorch and at least one inference or compilation stack.
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Strong Python programming and software engineering skills.
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Ability to work effectively across research, systems, infrastructure, and product teams.
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Excellent communication and problem-solving skills, with the ability to thrive in a fast-paced and collaborative environment.
Preferred Qualifications
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Experience with weight-only, activation, KV-cache, dynamic, static, or mixed-precision quantization.
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Experience with AWQ, GPTQ, SmoothQuant, or related methods.
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Strong numerical analysis and systems engineering skills.
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Experience with one or more LLM runtimes, such as TensorRT-LLM, vLLM, SGLang, llama.cpp, ONNX Runtime, TVM, MLIR, or custom runtimes.
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Experience deploying LLMs on resource-constrained or heterogeneous hardware.
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Contributions to model optimization, inference, compiler, or serving projects.
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Publications at NeurIPS, ICML, ICLR, ACL, or related conferences.
What We Provide
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A fun, supportive and engaging environment.
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Infrastructures and computational resources to support your work.
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Opportunity to work on cutting edge technologies with the top talents in the field.
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Opportunity to make a significant impact on the transportation revolution by the means of advancing autonomous driving.
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Competitive compensation package.
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Snacks, lunches, dinners, and fun activities.
Skills
As published by greenhouse · 7 questions · 1 written answer
Basics
First Name, Last Name, Email, Phone, Resume/CV, Cover Letter, Location
Short answers (2)
- LinkedIn Profile optional
- Website optional
Pick from a list (4)
- Have you ever worked at XPENG or any of its affiliates?
- Do you have any family members or relatives working previously or presently at XPENG or any of its affiliates?
- Are you legally authorized to work in the United States?
- Will you now or in the future require sponsorship for an employment visa (e.g., H-1B visa)?
Written answers (1)
- If you answered “Yes” to either of the questions above, please explain.