Skills · Train models
Post-training and fine-tuning
Course coming soon
SFT, preference optimization, RLHF and the data that drives them.
Mentioned in 169 of 338 recorded research roles (50%) and 292 of 1,837 technical roles (16%), as of October 2, 2026.
Learn it here
- Book, Chapter 17: preferences and the winner's curse
- Post-Training: From Fine-Tuning to Reinforcement Learning (coming soon)
The course page has its planned syllabus and a sign-up, which tells us how many people want it.
These counts describe the October 2, 2026 snapshot; postings need a fresh check. Explore opportunities.
Everything here that teaches it
2 pieces. Pieces built around this skill come first in each list; the rest use it along the way.
Also in Train models: How language models work, Reinforcement learning, RL environments and verifiers, Pretraining and scaling laws, Interpretability, Alignment research, Multimodal models.
Who asks for it
- Research scientists and engineers 169 of 338
- Fellowships, residencies and internships 13 of 44
- Applied AI and forward-deployed 37 of 323
- ML systems and infrastructure 8 of 109
- Machine learning engineers 21 of 146
- Software engineering at labs 44 of 877
Recorded roles that mention it
292 recorded postings mention it. Here are the newest 60 research, fellowship, applied and ML-systems roles; the rest are on the role pages linked above. Each title opens the lab's own posting.
- Senior Applied AI Engineer ↗
CodeRabbit · Applied AI and forward-deployed · No degree stated · $200k to $300k base
- Research Engineer, Mid-Training ↗
Cognition · Research scientists and engineers · PhD required
- Research Engineer, Post-Training ↗
Cognition · Research scientists and engineers · PhD required
- Research Engineer ↗
Greptile · Research scientists and engineers · PhD preferred · $180k to $280k base
- Research Engineer (Agentic Models) ↗
JetBrains (Junie, Mellum) · Research scientists and engineers · No degree stated
- Staff Research Engineer (LLM Pre-Training) ↗
JetBrains (Junie, Mellum) · Research scientists and engineers · No degree stated
- Staff/Senior AI Engineer, AI for Code ↗
JetBrains (Junie, Mellum) · Applied AI and forward-deployed · No degree stated
- AI Research Engineer, Post-Training ↗
Lovable · Research scientists and engineers · No degree stated
- Research Engineering Lead ↗
Lovable · Research scientists and engineers · No degree stated
- Staff Applied AI Engineer ↗
StackBlitz (Bolt) · Applied AI and forward-deployed · No degree stated
- Member of Technical Staff- Research Engineer (Harness Engineering and Agentic Orchestration) ↗
Tessl · Research scientists and engineers · PhD preferred
- Research Engineer, Asta ↗
Allen Institute for AI (Ai2) · Research scientists and engineers · PhD preferred · $129k to $193k base
- Research Scientist, Asta ↗
Allen Institute for AI (Ai2) · Research scientists and engineers · PhD required · $167k to $261k base
- Research Scientist, Robotics ↗
Allen Institute for AI (Ai2) · Research scientists and engineers · PhD required · $167k to $261k base
- Senior Research Engineer, Olmo + Molmo ↗
Allen Institute for AI (Ai2) · Research scientists and engineers · PhD or equivalent experience · $174k to $261k base
- [Expression of Interest] Research Engineer / Scientist, Alignment - London ↗
Anthropic · Research scientists and engineers · No degree stated
- Anthropic Fellows Program, ML Systems & Reinforcement Learning ↗
Anthropic · Fellowships, residencies and internships · No degree stated
- ML/Research Engineer, Safeguards ↗
Anthropic · Research scientists and engineers · No degree stated · $350k to $500k base
- Research Engineer / Scientist, Alignment ↗
Anthropic · Research scientists and engineers · No degree stated · $350k to $500k base
- Research Engineer, Code RL (Reinforcement Learning) ↗
Anthropic · Research scientists and engineers · No degree stated · $500k to $850k base
- Research Engineer, Computer Use ↗
Anthropic · Research scientists and engineers · No degree stated · $500k to $850k base
- Research Engineer, Machine Learning (RL Velocity) ↗
Anthropic · Research scientists and engineers · No degree stated
- Research Engineer, Machine Learning (RL Velocity) ↗
Anthropic · Research scientists and engineers · No degree stated · $500k to $850k base
- Research Engineer, Post-Training Model Evaluations ↗
Anthropic · Research scientists and engineers · No degree stated · $500k to $850k base
- Research Engineer, Production Model Post-Training ↗
Anthropic · Research scientists and engineers · No degree stated · $350k to $500k base
- Research Engineer, Production Model Post-Training ↗
Anthropic · Research scientists and engineers · No degree stated
- Research Engineer, RL Engineering ↗
Anthropic · Research scientists and engineers · No degree stated · $500k to $850k base
- Staff+ Research Engineer, RL Data Platform ↗
Anthropic · Research scientists and engineers · No degree stated · $500k to $850k base
- Applied Researcher, Audio ↗
Cartesia · Research scientists and engineers · No degree stated · $200k to $350k base
- Applied Researcher, Audio Post-Training ↗
Cartesia · Research scientists and engineers · No degree stated · $200k to $350k base
- Researcher, Post Training ↗
Cartesia · Research scientists and engineers · No degree stated · $180k to $350k base
- Principal Research Engineer, Post-Training ↗
Character.AI · Research scientists and engineers · PhD or equivalent experience · $275k to $400k base
- Research Engineer, AI Safety & Alignment ↗
Character.AI · Research scientists and engineers · PhD or equivalent experience · $225k to $400k base
- Research Engineer, Post-Training (All Industry Levels) ↗
Character.AI · Research scientists and engineers · PhD or equivalent experience · $225k to $400k base
- Member of Technical Staff - RL Environments ↗
Cohere · Research scientists and engineers · No degree stated
- Member of Technical Staff, Data Analysis and Evaluation ↗
Cohere · Research scientists and engineers · No degree stated
- Member of Technical Staff, Integration/RL Team (Research Engineer) ↗
Cohere · Research scientists and engineers · No degree stated
- Member of Technical Staff, Post-Training ↗
Cohere · Research scientists and engineers · No degree stated
- Senior Member of Technical Staff, Safety and Security for Agents ↗
Cohere · Research scientists and engineers · No degree stated
- Senior Member of Technical Staff, Synthetic Data ↗
Cohere · Research scientists and engineers · No degree stated
- Senior Research Engineer - Safety Tooling and Data ↗
Cohere · Research scientists and engineers · No degree stated
- Senior Software Engineer, GPU Infrastructure (HPC) ↗
Cohere · ML systems and infrastructure · No degree stated
- Manager, Applied AI Engineering, DeepMind ↗
Google DeepMind · Applied AI and forward-deployed · Bachelor's or equivalent
- Research Developer, Frontier AI Incubation, DeepMind ↗
Google DeepMind · Research scientists and engineers · Bachelor's or equivalent
- Research Engineer, Advancing Agent Quality, DeepMind ↗
Google DeepMind · Research scientists and engineers · No degree stated
- Research Engineer, Cyber Gemini, DeepMind ↗
Google DeepMind · Research scientists and engineers · Bachelor's or equivalent
- Research Engineer, Polaris, DeepMind ↗
Google DeepMind · Research scientists and engineers · No degree stated
- Research Engineer, Responsible Frontier AI Research, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD preferred
- Research Engineer, World Models, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD preferred
- Research Scientist, Agents, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
- Research Scientist, AGI Safety and Alignment, DeepMind ↗
Google DeepMind · Research scientists and engineers · Bachelor's or equivalent
- Research Scientist, AI Secure Code, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
- Research Scientist, Gemini Agent Safety, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
- Research Scientist, Gemini Horizon, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
- Research Scientist, Gemini Safety and Behavior, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
- Research Scientist, Gemini Vision, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
- Research Scientist, Multilingual, Multicultural and Multimodal LLM, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
- Research Scientist, Multisensor Robotics, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
- Research Scientist, Robotics RL, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
- Research Scientist/Engineer, Autonomous Security, DeepMind ↗
Google DeepMind · Research scientists and engineers · PhD or equivalent experience
