Open roles

403 postings · verified 2026-10-05 · a repost appears here once per listing but counts once in the statistics (how we count)

• Anthropic Fellows Program, ML Systems & Reinforcement Learning

  Anthropic · London, UK; Ontario, CAN; Remote-Friendly, United States; San Francisco, CA | British Columbia, CA | London, UK | Ontario, CA | Remote-Friendly US (Travel Required) | San Francisco, CA · Remote · Research Scientist · first seen 2026-09-29

  LLMsFine-tuningRL / post-trainingPython
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• Research Engineer, Pretraining

  Anthropic · London, UK · Research Engineer · first seen 2026-09-29

  LLMsRL / post-trainingPyTorchDistributed trainingKubernetesPython
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• Research Engineer, Machine Learning (Reinforcement Learning)

  Anthropic · London, UK · Research Engineer · first seen 2026-09-29

  LLMsRL / post-trainingPyTorchJAXKubernetesPythonRustC++
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• Research Engineer, Production Model Post-Training

  Anthropic · Zürich, CH · Research Engineer · first seen 2026-09-29

  EvalsLLMsFine-tuningRL / post-trainingPython
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• Model Performance Software Engineer, Claude Code

  Anthropic · San Francisco, CA | New York City, NY | San Francisco, CA · Inference / Perf · $405K–$485K base · first seen 2026-09-29

  EvalsRL / post-trainingPythonTypeScript
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• Research Engineer, Visual Knowledge Work

  Anthropic · New York City, NY; San Francisco, CA; Seattle, WA | San Francisco, CA · Research Engineer · $350K–$850K base · first seen 2026-09-29

  EvalsLLMsRL / post-training
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• Research Engineer, Cybersecurity RL (Reinforcement Learning)

  Anthropic · San Francisco, CA | New York City, NY | San Francisco, CA · Research Engineer · $300K–$405K base · first seen 2026-09-29

  LLMsRL / post-training
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• Research Engineer, RL Engineering

  Anthropic · San Francisco, CA | New York City, NY | Seattle, WA | San Francisco, CA · Research Engineer · $500K–$850K base · first seen 2026-09-29

  RL / post-trainingPyTorchJAXDistributed trainingPythonRustC++
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• Research Engineer / Research Scientist, Tokens

  Anthropic · New York City, NY; New York City, NY | Seattle, WA; San Francisco, CA | San Francisco, CA · Research Engineer · $350K–$500K base · first seen 2026-09-29

  RL / post-trainingPyTorchDistributed trainingKubernetes
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• ML/Research Engineer, Safeguards

  Anthropic · San Francisco, CA | New York City, NY | San Francisco, CA · Research Engineer · $350K–$500K base · first seen 2026-09-29

  EvalsLLMsRL / post-trainingPython
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• Research Engineer, Discovery

  Anthropic · San Francisco, CA · Research Engineer · $350K–$850K base · first seen 2026-09-29

  EvalsRL / post-trainingPyTorchJAXKubernetes
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• Research Engineer / Scientist, Alignment

  Anthropic · San Francisco, CA · Research Engineer · $350K–$500K base · first seen 2026-09-29

  EvalsLLMsPromptingRL / post-trainingKubernetesPython
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• Research Engineer/Research Scientist, Pre-training

  Anthropic · Remote-Friendly (Travel-Required) | San Francisco, CA | Seattle, WA | New York City, NY | Boston, MA | New York City, NY | San Francisco, CA | Seattle, WA · Remote · Research Engineer · $350K–$850K base · first seen 2026-09-29

  LLMsRL / post-trainingPyTorchDistributed trainingKubernetesPython
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• Research Engineer, Production Model Post-Training

  Anthropic · San Francisco, CA | New York City, NY | Seattle, WA | New York City, NY | San Francisco, CA | Seattle, WA · Research Engineer · $350K–$500K base · first seen 2026-09-29

  EvalsLLMsFine-tuningRL / post-trainingPython
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• Research Engineer, Machine Learning (Reinforcement Learning)

  Anthropic · San Francisco, CA | New York City, NY | New York City, NY | San Francisco, CA · Research Engineer · $500K–$850K base · first seen 2026-09-29

  LLMsRL / post-trainingPyTorchJAXKubernetesPythonRustC++
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• [Expression of Interest] Research Engineer / Scientist, Alignment - London

  Anthropic · London, UK · Research Engineer · first seen 2026-09-29

  EvalsLLMsPromptingRL / post-trainingKubernetesPython
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• Staff Research Engineer, Discovery Team

  Anthropic · San Francisco, CA | New York City, NY | Seattle, WA · Research Engineer · $350K–$850K base · first seen 2026-09-29

  EvalsLLMsRL / post-trainingDistributed trainingKubernetes
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• Staff+ Research Scientist, Multi-Agent

  Anthropic · San Francisco, CA | New York City, NY | Seattle, WA | New York City, NY | San Francisco, CA | Seattle, WA · Research Scientist · $500K–$850K base · first seen 2026-09-29

  EvalsRL / post-training
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• Research Engineer, Knowledge Team

  Anthropic · Remote-Friendly (Travel-Required) | San Francisco, CA | Seattle, WA | New York City, NY | New York City, NY | Remote-Friendly US (Travel Required) | San Francisco, CA | Seattle, WA · Remote · Research Engineer · $350K–$850K base · first seen 2026-09-29

  EvalsRAG / retrievalLLMsFine-tuningRL / post-trainingPython
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• Senior Product Manager, Perception & World Understanding Skills

  Agility Robotics · Hybrid- Fremont, CA | Remote · Remote · Product / Design · $186K–$242K base · first seen 2026-09-29

  EvalsRL / post-training
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• Senior Manager, Learning from Demonstration

  Agility Robotics · Remote · Remote · Other · $268K–$364K base · first seen 2026-09-29

  LLMsRL / post-trainingPhD
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• Senior AI Software Engineer, Reinforcement Learning

  Agility Robotics · Hybrid- Any Office (Fremont, CA, Salem, OR, or Pittsburgh, PA) | Fremont | Pittsburgh | Salem · Software Eng · $187K–$292K base · first seen 2026-09-29

  RL / post-trainingPyTorchPython
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• Senior AI Research Engineer

  Agility Robotics · Hybrid- Any Office (Fremont, CA, Salem, OR, or Pittsburgh, PA) | Fremont · Research Engineer · $195K–$304K base · first seen 2026-09-29

  RL / post-trainingPyTorchPythonC++
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• Senior Director, AI

  Agility Robotics · Remote · Remote · Other · $257K–$402K base · first seen 2026-09-29

  LLMsRL / post-trainingPhD
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• AI research scientist

  Writer · San Francisco, CA | Seattle, WA | New York City, NY · Research Scientist · $199K–$325K base · first seen 2026-09-29

  EvalsLLMsFine-tuningRL / post-trainingPyTorchJAXPythonPhD
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• Research Engineer / Scientist (Robot Learning)

  World Labs · San Francisco · Research Engineer · $250K–$350K base · first seen 2026-09-29

  RL / post-trainingPyTorchPythonC++PhD
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• Senior Business Development & Ops Lead, Robotics & Physical AI

  World Labs · San Francisco · GTM · $250K–$350K base · first seen 2026-09-29

  RL / post-training
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• Research, Mid Training

  Thinking Machines Lab · San Francisco · Research Scientist · first seen 2026-09-29

  EvalsLLMsFine-tuningRL / post-trainingPyTorchJAXDistributed trainingPython
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• Site Reliability Engineer, Post Training

  Thinking Machines Lab · San Francisco | New York · Research Engineer · first seen 2026-09-29

  RL / post-trainingDistributed trainingKubernetesPythonGoC++
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• Developer Experience Engineer

  Thinking Machines Lab · San Francisco · Software Eng · first seen 2026-09-29

  LLMsFine-tuningRL / post-training
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• Research, General Agents

  Thinking Machines Lab · San Francisco · Research Scientist · first seen 2026-09-29

  RL / post-trainingPyTorchJAXPython
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• Research, Coding Agents

  Thinking Machines Lab · San Francisco · Research Scientist · first seen 2026-09-29

  EvalsRL / post-trainingPyTorchJAXDistributed trainingPython
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• Research, Post-Training Evals

  Thinking Machines Lab · San Francisco · Research Engineer · first seen 2026-09-29

  EvalsLLMsRL / post-trainingPyTorchJAXPython
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• Research Lead, Tinker, Fine-tuning Science

  Thinking Machines Lab · San Francisco · Research Scientist · first seen 2026-09-29

  Fine-tuningRL / post-trainingPyTorchJAXPythonPhD
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• Research Software Engineer, Post Training

  Thinking Machines Lab · San Francisco · Research Engineer · first seen 2026-09-29

  RL / post-trainingPyTorchJAXPython
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• Research, Post-Training

  Thinking Machines Lab · San Francisco · Research Engineer · first seen 2026-09-29

  EvalsRL / post-trainingPyTorchJAXPythonPhD
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• Developer Relations Engineer

  Thinking Machines Lab · San Francisco · Software Eng · first seen 2026-09-29

  LLMsFine-tuningRL / post-trainingPython
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• Product Manager - Post Training

  Thinking Machines Lab · San Francisco · Product / Design · first seen 2026-09-29

  EvalsRL / post-training
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• Research, Tinker, RL Systems

  Thinking Machines Lab · San Francisco · Research Scientist · first seen 2026-09-29

  LLMsFine-tuningRL / post-trainingPyTorchJAXvLLM / SGLang / TensorRTDistributed trainingPython
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• Research, Finetuning Science

  Thinking Machines Lab · San Francisco · Research Scientist · first seen 2026-09-29

  Fine-tuningRL / post-trainingPyTorchJAXDistributed trainingPythonPhD
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• Research, RL Scaling

  Thinking Machines Lab · San Francisco · Research Scientist · first seen 2026-09-29

  LLMsRL / post-trainingPyTorchJAXvLLM / SGLang / TensorRTDistributed trainingPythonPhD
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• Research, Safety

  Thinking Machines Lab · San Francisco · Safety / Policy · first seen 2026-09-29

  EvalsRL / post-trainingPyTorchJAXPythonPhD
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• Research Engineer, Coding Evaluation & Training Data

  Surge AI · United States - Remote · Remote · Research Engineer · first seen 2026-09-29

  EvalsRL / post-training
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• Human Data Architect

  Surge AI · United States - Remote · Remote · Evals / Data · first seen 2026-09-29

  EvalsRL / post-training
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• Software Engineer, Coding Evaluation & Training Data

  Surge AI · United States - Remote · Remote · Evals / Data · first seen 2026-09-29

  EvalsRL / post-training
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• Staff Product Engineer

  Surge AI · United States - Remote · Remote · Software Eng · first seen 2026-09-29

  RL / post-trainingPythonTypeScript
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• Sr/Staff Product Manager, ML Research

  Runway · Remote · Remote · Product / Design · $230K–$280K base · first seen 2026-09-29

  RL / post-trainingPython
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• Member of Technical Staff, Research Engineer

  Runway · Remote · Remote · Research Engineer · $270K–$370K base · first seen 2026-09-29

  EvalsLLMsRL / post-trainingPyTorchJAXDistributed training
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• Research Program Manager - Research Infrastructure

  Reflection AI · New York, NY | San Francisco, CA | London · Program / Ops · first seen 2026-09-29

  RL / post-trainingDistributed training
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• Member of Technical Staff - Mid-Training Infra

  Reflection AI · San Francisco, CA | London | New York, NY · Infra / Hardware · first seen 2026-09-29

  RL / post-trainingvLLM / SGLang / TensorRTDistributed training
  Save Member of Technical Staff - Mid-Training Infra