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AI Researcher, Core ML (Turbo)

San Francisco💼 Full-time💰 $200,000–$200,000🗓 2026-07-10 → 2026-07-31

Core

Design and operate high-performance inference and RL/post-training engines to make LLMs faster, cheaper, and more capable at production scale.

Role type

Staff-level AI Researcher (Core ML / Inference & RL Systems)

Builds

Production inference stacks (SGLang, vLLM-style), RL training pipelines (GRPO, RLHF), and efficient model serving systems.

Domain

Artificial Intelligence, Large Language Models, High-Performance Computing

Deliverable

production ML models

Required skills

Large-scale inference systems, RL/post-training for LLMs, Transformer architecture design, Distributed systems for ML, Python, GPU performance profiling, End-to-end project ownership

Preferred skills

Kernel backend implementation, Speculative decoding, Quantization, Async RL rollouts, Ablation study design

Technologies

SGLang, vLLM, FasterTransformer, TensorRT, ATLAS, GRPO, RLHF, RLAIF, DPO

Responsibilities

Design and prototype algorithms for low-latency, high-throughput inference; Implement and maintain changes in high-performance inference engines; Design and operate RL and post-training pipelines; Profile, debug, and optimize inference and post-training services under real production workloads; Set technical direction for cross-team efforts at the intersection of inference, RL, and post-training.

Seniority

Staff, technical leadership & mentorship

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