LLM Jobs in California, United States

Natural Language Processing (NLP)

4mo agoNE

Lead Tech Recruiter (ML, LLM)

Nebius

United States (Remote)

Recruitment

Technical Recruiting

LLM

Inference Optimization

3mo agoPO

Member of Engineering (Pre-training / Synthetic Data)

Poolside

United States or Remote (United States + 2 more)

AI Research Engineer

Synthetic Data Generation

2w agoXT

BioMedical AI Research Engineer

Xaira Therapeutics

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

BioMedical AI

AI Research Engineer

Agentic AI

Large Language Models (LLM)

4w agoCR

Principal Engineer, AI Model LifeCycle

Crusoe

San Francisco, California, United States (On-site)$260K – $326K Yearly

Principal Engineer

AI Infrastructure Engineer

Machine Learning Engineering

Generative AI

3mo agoHA

LLM Inference Engineer

Hippocratic AI

Palo Alto, California, United States (On-site)

LLM Engineering

LLM Inference

Distributed Serving

3mo agoCO

Senior Research Scientist, Model Evaluation

Cohere

Toronto, Ontario, Canada or Remote (Canada + 2 more)

Modeling

Machine Learning Research

LLM Evaluation

Model Evaluation

3mo agoPL

LLM Inference Engineer

Periodic Labs

Menlo Park, California, United States (On-site)

LLM Engineering

Machine Learning Infrastructure

LLM Inference

TensorRT-LLM

3mo agoPO

Member of Engineering (Pre-training / Data)

Poolside

United Kingdom or Remote (Europe, Middle East, and Africa, North America)

AI Researcher

Machine Learning Research Scientist

2mo agoSC

Staff Machine Learning Research Scientist, LLM Evals

Scale

San Francisco, California, United States (On-site)$280K – $380K Yearly

AI Research Scientist

Large Language Models

Natural Language Processing

3mo agoPL

Research Engineer - Posttraining

Periodic Labs

Menlo Park, California, United States (On-site)

Research Engineer

Reinforcement Learning

3mo agoCO

Member of Technical Staff, Model Efficiency

Cohere

New York, United States or Remote (New York, United States + 3 more)

Modeling

C++

Python

4w agoTA

Machine Learning Engineer

Together AI

San Francisco, California, United States (On-site)$160K – $220K Yearly

AI Engineer

LLMs

1mo agoNV

Research Scientist, Fundamental LLM Research for Knowledge, Reasoning, and Agents - New College Grad 2026

NVIDIA

Santa Clara, California, United States (On-site)$168K – $264.5K Yearly

4w agoTA

LLM Inference Frameworks and Optimization Engineer

Together AI

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

AI Research Engineer

LLM Inference

TensorRT-LLM

2w agoAN

Machine Learning Systems Engineer, RL Engineering

Anthropic

San Francisco, California, United States (Hybrid)$500K – $850K Yearly

ML Infrastructure

Machine Learning Research

Python

3mo agoOP

Researcher, Training

OpenAI

San Francisco, California, United States (Hybrid)$360K – $440K Yearly

AI Research

LLM Architectures

Deep Learning

1mo agoNV

Senior Deep Learning Algorithm Engineer, Training Framework

NVIDIA

Santa Clara, California, United States (Hybrid)$184K – $287.5K Yearly

3mo agoRA

Member of Technical Staff - Data Quality Engineer (Post-training)

Reflection AI

San Francisco, California, United States (On-site)

Data Engineer

Data Quality Engineer

Python

3mo agoD-

Machine Learning Intern - Dynamic KV-Cache Modeling for Efficient LLM Inference

d-Matrix

Santa Clara, Ca, Ca, United States or Remote (California, United States)$30 – $59 Hourly

Machine Learning Intern

AI Research