Liftoff Jobs

A curated index of open roles at top-tier AI companies.

Developer tools AI research jobs

Last updated 5 hours ago

141 open developer tools AI research roles at 17 AI companies, including Anthropic, Mistral AI and Thinking Machines Lab. Updated daily; 3 were posted this week.

141 open Sort: newest · highest comp · company A–Z Group by company
  1. Research, Post-Training Evals — Thinking Machines Lab · Seed · San Francisco, CA · todaynew
  2. Site Reliability Engineer, RL Infra — Thinking Machines Lab · Seed · San Francisco, CA · todaynew
  3. Research, RL Scaling — Thinking Machines Lab · Seed · San Francisco, CA · 5 days agonew
  4. AI Scientist - Physics Models — Mistral AI · Series C · Paris, FR · last week
  5. AI Scientist - Agentic Engineering — Mistral AI · Series C · Paris, FR · last week
  6. Research Engineer – Benchmarking — Mercor · Series B · San Francisco, CA · $180K–500K · last week
  7. Fullstack Engineer, RL Environments — Mercor · Series B · San Francisco, CA · $130K–500K · last week
  8. AI Research Engineer — Traversal · New York, NY · last week
  9. Research Scientist, Life Sciences (Chemistry) — Anthropic · San Francisco, CA · $300K–320K · last week
  10. Research Engineer, LangSmith Engine — LangChain · Series B · New York, NY · last week
  11. Data Scientist — OpenRouter · Series A · Remote (US) · $180K–240K · last week
  12. Software Engineer, Infrastructure, Interpretability — Anthropic · San Francisco, CA · $320K–485K · 2 weeks ago
  13. Staff+ Researcher, Cybersecurity Products — Anthropic · San Francisco, CA · $405K–485K · 2 weeks ago
  14. Member of Technical Staff - Post-Training — Reflection AI · Series B · San Francisco, CA · 2 weeks ago
  15. Research Scientist (London) — Goodfire · Series B · London, UK · GBP 150,000–300,000/year · 2 weeks ago
  16. Data Scientist, Product — Lovable · Series B · Stockholm, SE · 2 weeks ago
  17. Data Scientist, Pricing — Lovable · Series B · Stockholm, SE · 2 weeks ago
  18. Data Scientist, Growth — Lovable · Series B · London, UK · 2 weeks ago
  19. Data Scientist, Agent — Lovable · Series B · Stockholm, SE · 2 weeks ago
  20. Technical Program Manager, RL Research — Anthropic · San Francisco, CA · $365K–435K · 3 weeks ago
  21. Forward Deployed Engineer (Inference & Post-Training) - Mandarin Speaking — Together AI · Seed · Singapore, SG · 3 weeks ago
  22. Research Engineer, Code Agents Infra — Mistral AI · Series C · Palo Alto, CA · 3 weeks ago
  23. Research, Post-Training — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  24. Research Engineer, Infrastructure, Inference — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  25. Research, Pre-Training Data — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  26. Research, Pre-Training Science — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  27. Research Engineer, Infrastructure, Numerics — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  28. Research Engineer, Infrastructure, RL Systems — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  29. Research Engineer, Infrastructure, Kernels — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  30. Research Engineer, Infrastructure, Training Systems — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  31. Member of Technical Staff, Research — Fireworks AI · Series D · San Mateo, CA · $210K–320K · 3 weeks ago
  32. Applied Scientist — Mistral AI · Series C · Palo Alto, CA · 3 weeks ago
  33. Research Engineer, Large-Scale Training — Together AI · Seed · San Francisco, CA · $200K–290K · 3 weeks ago
  34. Applied Scientist/Research Engineer, EMEA — Mistral AI · Series C · Paris, FR · 4 weeks ago
  35. ML Research Intern — Modal · Series C · New York, NY · USD 15,000/month · 4 weeks ago
  36. Member of Technical Staff - Research Software Engineer - Safety Evaluations Infrastructure — Reflection AI · Series B · New York, NY · 4 weeks ago
  37. Staff Software Engineer, Code RL — Anthropic · San Francisco, CA · $405K–625K · 4 weeks ago
  38. Research Scientist, Takeoff Intel — Anthropic · San Francisco, CA · $350K–850K · 4 weeks ago
  39. Research Engineer, Real Environments — Mercor · Series B · San Francisco, CA · $180K–500K · 4 weeks ago
  40. Pre-training Distributed Systems Tech Lead / Manager — Anthropic · San Francisco, CA · $500K–850K · 5 weeks ago
  41. People Research Scientist, Recruiting — Anthropic · San Francisco, CA · $285K–380K · 5 weeks ago
  42. Applied Researcher, Audio Post-Training — Cartesia · Series A · San Francisco, CA · $200K–350K · 5 weeks ago
  43. Research Lead, Training — Goodfire · Series B · San Francisco, CA · $400K–600K · 5 weeks ago
  44. Research Scientist, Life Sciences (Computational) — Anthropic · San Francisco, CA · $300K–320K · 5 weeks ago
  45. Research Scientist — OpenRouter · Series A · Remote (US) · $250K–285K · 6 weeks ago
  46. Research Engineer, Chip Design RL (Reinforcement Learning) — Anthropic · San Francisco, CA · $500K–850K · 6 weeks ago
  47. AI Scientist — Mistral AI · Series C · Paris, FR · 6 weeks ago
  48. Research Engineer, Data Infrastructure — Mistral AI · Series C · Palo Alto, CA · 6 weeks ago
  49. Research Engineer, Machine Learning — Mistral AI · Series C · Palo Alto, CA · 6 weeks ago
  50. AI Scientist — Mistral AI · Series C · Zurich, CH · 6 weeks ago

See all 141 developer tools AI research roles →

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