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LLM Research Jobs in California, United States

Browse 75 LLM Research jobs in California, United States on Inference Jobs.

75 jobs

3 wk. ago

D-

Senior Staff ML Researcher - LLM Algorithmic Optimization

d-Matrix

Santa Clara, California, United States (Hybrid)$155–235K Yearly

Machine Learning Research

LLM Research

Python

OOP

3 wk. ago

Senior Applied Scientist, Efficient LLM Inference & Model Optimization

Nebius

Palo Alto, California, United States (On-site)$195.2–262.2K Yearly

19 hr. ago Scale logo

Staff Machine Learning Research Engineer, Agent Post-training - Enterprise GenAI

Scale

San Francisco, California, United States (On-site)$264.8–331K Yearly

Machine Learning Engineer

AI Research Engineer

LLM Training

RLHF

6 days ago NVIDIA logo

Applied Deep Learning PhD Research Intern, Reinforcement Learning for LLMs - Fall 2026

NVIDIA

Santa Clara, California, United States (On-site)$30.00 – $94.00 Hourly

Applied Deep Learning Research

Reinforcement Learning Research

Reinforcement Learning

Large Language Models

3 wk. ago

Research Engineer, Performance RL

Anthropic

San Francisco, California, United States (Hybrid)$350–850K Yearly

AI Research & Engineering

Machine Learning Engineer

Reinforcement Learning

CUDA

1 day ago

ML Research Engineer, ML Systems

Scale

San Francisco, California, United States (On-site)$189.6–237K Yearly

Machine Learning Engineer

ML Research

CUDA

PyTorch

3 wk. ago

Research Engineer - Data

Periodic Labs

Menlo Park, California, United States (On-site)$250–350K Yearly

3 wk. ago

Machine Learning Research Engineer

Decagon

San Francisco, California, United States (On-site)$200–400K Yearly

Machine Learning Engineer

AI Research Engineer

Python

LLMs

19 hr. ago CoreWeave logo

Staff Applied Research Engineer

CoreWeave

Sunnyvale, California, United States (On-site)$207–275K Yearly

Applied Research Engineering

LLM Training

Reinforcement Learning

19 hr. ago Scale logo

Machine Learning Systems Research Engineer, Agent Post-training - Enterprise GenAI

Scale

San Francisco, California, United States (On-site)$264.8–331K Yearly

Machine Learning Engineer

ML Research Engineer

LLM Training

RLHF

4 wk. ago

Research Engineer, Domain Scaling

Anthropic

San Francisco, California, United States (Hybrid)$1.00 – $2.00 Yearly

AI Research & Engineering

Research Engineering

Fine-tuning Large Language Models

Reinforcement Learning

4 wk. ago

Research Engineer / Research Scientist -Personal AGI, Proactivity

OpenAI

San Francisco, California, United States (Hybrid)$295–555K Yearly

2 days ago Periodic Labs logo

Research Engineer - Midtraining

Periodic Labs

Menlo Park, California, United States (On-site)$250–350K Yearly

AI Research

Machine Learning Engineering

LLM Training

Large-Scale Model Training

4 wk. ago

LLM Inference Frameworks and Optimization Engineer

Together AI

San Francisco, California, United States (On-site)$160–230K Yearly

Machine Learning Engineer

AI Research Engineer

TensorRT-LLM

vLLM

2 wk. ago

Member of Technical Staff (Model Behavior)

Perplexity

San Francisco, California, United States (Hybrid)$200–330K Yearly

AI Research & Systems

Prompt Engineering

Context Engineering

2 wk. ago

Research Engineer / Research Scientist / AI Systems Engineer, RSI

OpenAI

San Francisco, California, United States (On-site)$295–445K Yearly

4 wk. ago

Senior Applied Deep Learning Research Scientist, Efficiency

NVIDIA

Santa Clara, California, United States (On-site)$192–356.5K Yearly

Deep Learning Research

Applied Science

Deep Learning

Python

2 wk. ago

VP, Research

Scale

San Francisco, California, United States (On-site)$453.6–567K Yearly

AI Research Leadership

AI Research

Machine Learning

Generative AI

3 wk. ago

Research Scientist, Frontier Risk Evaluations

Scale

San Francisco, California, United States (On-site)$216–270K Yearly

2 wk. ago

BioMedical AI Research Engineer

Xaira Therapeutics

South San Francisco, California, United States (On-site)$190–280K Yearly

BioMedical AI

AI Research Engineer

Agentic AI

Large Language Models (LLM)

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