Fine-tuning engineer jobs
Model-adaptation roles — LoRA/PEFT, RLHF/DPO, distillation.
123 open roles
Member of Technical Staff - Imagine Model
xAI · Palo Alto, CA; Seattle, WA
Staff Software Engineer, Full-Stack - Enterprise Gen AI
Scale AI · New York, NY; San Francisco, CA
Research Engineer, Code RL (Reinforcement Learning)
Anthropic · San Francisco, CA | New York City, NY
Member of Engineering (Reinforcement Learning Infrastructure)
Poolside · Remote (EMEA/East Coast)
Anthropic Fellows Program, Reinforcement Learning
Anthropic · London, UK; Ontario, CAN; Remote-Friendly, United States; San Francisco, CA
Frontier Agents Intern (Fall 2026)
Together AI · San Francisco
ML Research Engineer, ML Systems
Scale AI · San Francisco, CA; Seattle, WA; New York, NY
AI Deployment Engineer - Startups
OpenAI · London, UK
Research Engineer / Research Scientist- Personal AGI (Post Training)
OpenAI · San Francisco
$295k–555k/yr
Applied Research Intern
Labelbox · San Francisco Bay Area
Research Engineer, AI Safety & Alignment
Character.AI · Redwood City, CA
$225k–400k/yr
Open-Source Software, Machine Learning Engineer
Mistral AI · Paris
Research Scientist, Agent Robustness
Scale AI · San Francisco, CA; New York, NY
Senior/Staff Applied AI, Machine Learning Engineer
Mistral AI · Seoul
Research Engineer, Production Model Post-Training
Anthropic · San Francisco, CA | New York City, NY | Seattle, WA
Research Engineer/Scientist - Human Alignment, Consumer Devices
OpenAI · San Francisco
$380k–445k/yr
Applied Machine Learning Engineer
Fireworks AI · San Mateo
Researcher, Post Training
Lovable · Stockholm
Machine Learning Systems Research Engineer, Agent Post-training - Enterprise GenAI
Scale AI · San Francisco, CA; New York, NY
Senior Staff Software Engineer, AI Model Lifecycle
Crusoe · San Francisco, CA - US
Research Engineer, Production Model Post-Training
Anthropic · Zürich, CH
Applied Machine Learning Research Scientist
Cerebras · US and Canada Offices
Staff Research Engineer - Video Post Training
Synthesia · Europe
Research Engineer, Codex
OpenAI · San Francisco
$295k–445k/yr
Researcher, Synthetic RL
OpenAI · San Francisco
$295k–445k/yr
[Expression of Interest] Research Scientist / Engineer, Honesty
Anthropic · New York City, NY; San Francisco, CA
Member of Technical Staff (AI Researcher)
Perplexity · San Francisco
$220k–485k/yr
Staff+ Software Engineer, Inference Runtime
Anthropic · Remote-Friendly (Travel-Required) | San Francisco, CA | Seattle, WA | New York City, NY
Research Engineer, Applied AI Engineering
OpenAI · San Francisco
$250k–555k/yr
Senior Software Engineer, Observability Insights
CoreWeave · New York, NY / Sunnyvale, CA
Software Engineer, ML Research
Anysphere (Cursor) · San Francisco
Staff Software Engineer, AI Model Lifecycle
Crusoe · San Francisco, CA - US
Member of Technical Staff - Inference
xAI · Palo Alto, CA
Member of Technical Staff, Integration/RL Team (Research Engineer)
Cohere · Paris
Machine Learning Engineer, Integrity
OpenAI · San Francisco
$266k–555k/yr
Multimodal LLM Researcher (MLLM)
Pika · Palo Alto HQ
$185k–400k/yr
AI Field Engineer - AI Natives
Fireworks AI · San Mateo
Post-Training Research Engineer
Baseten · San Francisco
$200k–275k/yr
Senior Software Engineer, GenAI
Scale AI · San Francisco, CA; New York, NY
Staff AI research scientist
Writer · San Francisco, CA
$234k–296k/yr
Senior/Staff Machine Learning Research Engineer, General Agents, Enterprise GenAI
Scale AI · San Francisco, CA; New York, NY
Principal Research Engineer
Synthesia · Europe
Software engineer, agents (UK)
Writer · London, UK
Full-Stack Engineer, AI Data Platform
Labelbox · San Francisco Bay Area
Software Engineer - Training Product
Baseten · San Francisco
$165k–330k/yr
Applied AI Architect, Applied AI (Digital Natives Business)
Anthropic · Munich, Germany
Agent Post-Training Research
OpenAI · San Francisco
$295k–445k/yr
AI Researcher, Core ML (Turbo)
Together AI · San Francisco
Software Engineer, Model Performance Systems
Baseten · San Francisco
$160k–200k/yr
Machine Learning Research Engineer, Agents - Enterprise GenAI
Scale AI · San Francisco, CA; New York, NY
Research Staff, LLMs
Deepgram · USA | Remote
$150k–250k/yr
Forward Deployed Engineer, Agentic Platform (Singapore)
Cohere · Singapore
Research Engineer - Environments, Data and Post-Training
Mercor · San Francisco
$130k–500k/yr
Senior Software Engineer - AI / ML
Snorkel AI · Redwood City, CA (Hybrid); San Francisco, CA (Hybrid)
GenAI Strategic Projects Lead, Public Sector
Scale AI · Washington, DC
Research Engineer, Interpretability
Anthropic · San Francisco, CA
GTM Systems Analyst
Scale AI · San Francisco, CA
Research Engineer / Research Scientist -Personal AGI, Proactivity
OpenAI · San Francisco
$295k–555k/yr
Forward Deployed Engineer - ML
Modal · New York
$180k–250k/yr
Research Engineer, Cybersecurity RL (Reinforcement Learning)
Anthropic · San Francisco, CA | New York City, NY
Forward Deployed Engineer - ML
Modal · Stockholm
Research Engineer, RL Engineering
Anthropic · San Francisco, CA | New York City, NY | Seattle, WA
Researcher, Training - London
OpenAI · London, UK
£170k–445k/yr
Manager, Forward Deployed Engineering
Snorkel AI · New York City, NY (Hybrid); Redwood City, CA (Hybrid); San Francisco, CA (Hybrid)
Research Engineer, Frontier Evals & Environments
OpenAI · San Francisco
$205k–380k/yr
Forward Deployed Engineer
Labelbox · San Francisco Bay Area
Member of Technical Staff, MLE [Singapore]
Cohere · Singapore
AI Field Engineer - Enterprise
Fireworks AI · San Mateo
Member of Technical Staff, MLE
Cohere · San Francisco
Member of Engineering (Reinforcement Learning)
Poolside · Remote (EMEA/East Coast)
Machine Learning Research Engineer, Agent Data Foundation - Enterprise GenAI
Scale AI · San Francisco, CA; New York, NY
Forward Deployed Engineering Manager
Labelbox · San Francisco Bay Area
Research Engineer, Machine Learning (Reinforcement Learning)
Anthropic · San Francisco, CA | New York City, NY
Member of Technical Staff, Backend
Vapi · San Francisco
$200k–280k/yr
Member of Technical Staff - Post-Training and RL
xAI · Palo Alto, CA
Research Scientist, AI Controls and Monitoring
Scale AI · San Francisco, CA; New York, NY
Member of Technical Staff, Document Understanding
LlamaIndex · San Francisco
$180k–250k/yr
Member of Technical Staff - Voice Model
xAI · Palo Alto, CA
Research Engineer, Knowledge Foundations
Anthropic · San Francisco, CA
Applied AI, Senior/Staff Forward Deployed Machine Learning Engineer - Singapore
Mistral AI · Singapore
Researcher, Agent Post-Training, API & Power-Users
OpenAI · San Francisco
$295k–445k/yr
Forward Deployed Engineer, GenAI
Scale AI · San Francisco, CA; New York, NY
Engineering Manager, MLE
OpenAI · San Francisco
$293k–385k/yr
Applied AI/ML Scientist
Cerebras · UAE
Research Engineer, Performance RL (Reinforcement Learning)
Anthropic · San Francisco, CA
VP of Product, Research and Training Infrastructure
CoreWeave · Livingston, NJ / New York, NY / Sunnyvale, CA / Bellevue, WA
Senior Software Engineer, AI Model Lifecycle
Crusoe · San Francisco, CA - US
Agent Strategist - NYC
Vapi · New York
$130k–160k/yr
Applied AI Engineer - AI Solutions
Snorkel AI · New York City, NY (Hybrid); Redwood City, CA (Hybrid); San Francisco, CA (Hybrid); United States (Remote)
Software Engineer, Gen AI Platform
Abridge · SF Office
$221k–300k/yr
Applied AI Architect, Partnerships
Anthropic · San Francisco, CA | New York City, NY | Seattle, WA
Applied Research Scientist, Agents
Labelbox · San Francisco Bay Area
AI Deployment Engineer - Startups
OpenAI · Paris, France
Engineering Manager, Distillation & Detection Platform
OpenAI · San Francisco
$293k–385k/yr
Staff Research Engineer
Decagon · San Francisco
$200k–400k/yr
Research Engineer, Multimodal
Character.AI · Redwood City, CA
$225k–400k/yr
Defense / Edge Tech Lead
Deepgram · USA | Remote
$185k–245k/yr
Software Engineer, Agent
Sierra · Tokyo
$22000k–47000k/yr
Research Engineer - Speech & Realtime Models
OpenAI · San Francisco
$295k–445k/yr
Forward Deployed Research Scientist
Labelbox · San Francisco Bay Area
Researcher, Agent Post-Training, Personality
OpenAI · San Francisco
$295k–445k/yr
Research Engineer, Core ML
Together AI · San Francisco
Software Engineer - Model Performance
Baseten · San Francisco
$180k–360k/yr
Director, Research - Human Data Systems
Snorkel AI · San Francisco, CA (Hybrid)
Research Engineering Lead
Lovable · Stockholm
Staff Machine Learning Research Engineer, Agent Post-training - Enterprise GenAI
Scale AI · San Francisco, CA; New York, NY
Research Intern RL & Post-Training Systems, Turbo (Fall 2026)
Together AI · San Francisco
ML/Research Engineer, Safeguards
Anthropic · San Francisco, CA | New York City, NY
Tech Lead Manager- MLRE, ML Systems
Scale AI · San Francisco, CA; New York, NY
Senior Software Engineer, Backend/Infra
Pika · Palo Alto HQ
$185k–300k/yr
Staff Software Engineer, Applied Training
CoreWeave · Sunnyvale, CA / Bellevue, WA
Member of Technical Staff - Mid-training
xAI · Palo Alto, CA
Senior Director, AI Model Lifecycle
Crusoe · San Francisco, CA - US
Senior Software Engineer, Full Stack - NYC
Harvey · New York
$200k–260k/yr
Research Lead, Training Insights
Anthropic · Remote-Friendly (Travel Required) | San Francisco, CA; San Francisco, CA | New York City, NY
Research Engineer
Cohere · Toronto
Principal Research Engineer, Post-Training
Character.AI · Redwood City, CA
$275k–400k/yr
Senior Research Engineer - Voice
Synthesia · Europe
Research, Post-Training
Cognition · San Francisco
Regional Director, Forward Deployed Engineering
Anysphere (Cursor) · San Francisco
Member of Technical Staff - Reasoning
xAI · London, UK
Software Engineer, RL Data
Anthropic · London, UK; San Francisco, CA | New York City, NY
Applied Research Engineer, Agents
Labelbox · San Francisco Bay Area