Liftoff Jobs

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

Developer tools AI research jobs

Last updated 25 hours ago

123 open developer tools AI research roles at 15 AI companies, including Anthropic, Mistral AI and Thinking Machines Lab. Updated daily; 6 were posted this week.

123 open Sort: newest · highest comp · company A–Z Group by company
  1. Research Engineer - Cybersecurity (RL Environments) — Mistral AI · Series C · Paris, FR · yesterdaynew
  2. Applied Science - Research Engineer (Robotics) — Mistral AI · Series C · Singapore, SG · yesterdaynew
  3. Research Engineer, Data Infrastructure (Language Modeling) — Cartesia · Series A · San Francisco, CA · $200K–350K · yesterdaynew
  4. Web Crawling - Research Engineer — Thinking Machines Lab · Seed · San Francisco, CA · yesterdaynew
  5. Research Operations, Reinforcement Learning — Anthropic · San Francisco, CA · $210K–260K · 3 days agonew
  6. Research, Mid Training — Thinking Machines Lab · Seed · San Francisco, CA · 4 days agonew
  7. Research Engineer - Environments, Data and Post-Training — Mercor · Series B · San Francisco, CA · $250K–500K · last week
  8. Applied Scientist (Internship in Paris or London) — Mistral AI · Series C · Seoul, KR · last week
  9. Research Intern, Frontier Agents (Summer 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · last week
  10. Research Intern, Frontier Agents (Winter 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · last week
  11. Systems Research Engineer Intern - GPU Programming (Winter 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · last week
  12. Systems Research Engineer Intern - GPU Programming (Summer 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · last week
  13. Research Intern, Model Shaping (Winter 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · last week
  14. Research Intern, Model Shaping (Summer 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · last week
  15. Research Intern, Inference (Winter 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · last week
  16. Research Intern, Inference (Summer 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · last week
  17. Research, Finetuning Science — Thinking Machines Lab · Seed · San Francisco, CA · last week
  18. Research Lead, Tinker, Fine-tuning Science — Thinking Machines Lab · Seed · San Francisco, CA · last week
  19. Research, Tinker, RL Systems — Thinking Machines Lab · Seed · San Francisco, CA · last week
  20. Research Engineer, Full Stack — Mistral AI · Series C · Palo Alto, CA · 2 weeks ago
  21. Research Software Engineer, Post Training — Thinking Machines Lab · Seed · San Francisco, CA · 2 weeks ago
  22. Member of Technical Staff, Research (2026 PhD New Grad) — Fireworks AI · Series D · San Mateo, CA · $200K–300K · 2 weeks ago
  23. Research Engineer, Takeoff Intel — Anthropic · Travel Required · Remote · $350K–850K · 2 weeks ago
  24. Research Engineer, Cybersecurity RL (Reinforcement Learning) — Anthropic · Zurich, CH · 2 weeks ago
  25. AI Scientist - Physics Models — Mistral AI · Series C · Paris, FR · 3 weeks ago
  26. AI Scientist - Agentic Engineering — Mistral AI · Series C · Paris, FR · 3 weeks ago
  27. Research Engineer, Forge — Mistral AI · Series C · Paris, FR · 3 weeks ago
  28. Research Manager, Biological Safety — Anthropic · San Francisco, CA · $405K–485K · 3 weeks ago
  29. Research, General Agents — Thinking Machines Lab · Seed · San Francisco, CA · 4 weeks ago
  30. Research, Coding Agents — Thinking Machines Lab · Seed · San Francisco, CA · 4 weeks ago
  31. Research Scientist, APEX Benchmarks — Mercor · Series B · San Francisco, CA · $200K–500K · 4 weeks ago
  32. Staff+ Research Engineer, RL Data Platform — Anthropic · San Francisco, CA · $500K–850K · 4 weeks ago
  33. Research, Post-Training Evals — Thinking Machines Lab · Seed · San Francisco, CA · 4 weeks ago
  34. Research, Safety — Thinking Machines Lab · Seed · San Francisco, CA · 4 weeks ago
  35. Research, RL Scaling — Thinking Machines Lab · Seed · San Francisco, CA · 5 weeks ago
  36. Research Engineer – Benchmarking — Mercor · Series B · San Francisco, CA · $180K–500K · 5 weeks ago
  37. AI Research Engineer — Traversal · New York, NY · 5 weeks ago
  38. Staff+ Software Engineer, Infrastructure, Interpretability — Anthropic · San Francisco, CA · $405K–485K · 6 weeks ago
  39. Staff+ Researcher, Cybersecurity Products — Anthropic · San Francisco, CA · $405K–485K · 6 weeks ago
  40. Member of Technical Staff - Post-Training — Reflection AI · Series B · San Francisco, CA · 6 weeks ago
  41. Research Scientist (London) — Goodfire · Series B · London, UK · GBP 150,000–300,000/year · 7 weeks ago
  42. Research Engineer, Code Agents Infra — Mistral AI · Series C · Palo Alto, CA · 7 weeks ago
  43. Research, Post-Training — Thinking Machines Lab · Seed · San Francisco, CA · 7 weeks ago
  44. Research, Pre-Training Data — Thinking Machines Lab · Seed · San Francisco, CA · 7 weeks ago
  45. Research, Audio Expertise — Thinking Machines Lab · Seed · San Francisco, CA · 7 weeks ago
  46. Research, Vision Expertise — Thinking Machines Lab · Seed · San Francisco, CA · 7 weeks ago
  47. Member of Technical Staff, Research — Fireworks AI · Series D · San Mateo, CA · $210K–320K · 7 weeks ago
  48. Applied Scientist — Mistral AI · Series C · Palo Alto, CA · 7 weeks ago
  49. Research Engineer, Large-Scale Training — Together AI · Seed · San Francisco, CA · $200K–290K · 8 weeks ago
  50. Applied Scientist, EMEA — Mistral AI · Series C · Paris, FR · 8 weeks ago

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