Liftoff Jobs

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

Developer tools AI research jobs

Last updated 46 hours ago

126 open developer tools AI research roles at 13 AI companies, including Anthropic, Mistral AI and Thinking Machines Lab. Updated daily; 5 were posted this week.

126 open Sort: newest · highest comp · company A–Z Group by company
  1. Conceptual Reasoning Fellow — Anthropic · Remote (US) · $100K–167K · yesterdaynew
  2. Research Engineer - Eval Platform — Mistral AI · Series D · Paris, FR · 3 days agonew
  3. Post-Training Applied Researcher — Baseten · Late Stage · San Francisco, CA · $200K–275K · 3 days agonew
  4. LLM Scientist, AI for Science — Mistral AI · Series D · Paris, FR · 5 days agonew
  5. Research Intern — Mercor · Series B · San Francisco, CA · USD 80/hour · 5 days agonew
  6. Staff Research Engineer, Multi-Agent Scaling — Anthropic · San Francisco, CA · $500K–850K · last week
  7. Model Designer — Thinking Machines Lab · Seed · San Francisco, CA · last week
  8. Research Engineer / Research Scientist, RL Frontiers — Anthropic · San Francisco, CA · $500K–850K · last week
  9. AI Scientist - Domain Expert Crashworthiness — Mistral AI · Series D · Paris, FR · last week
  10. Research Engineer - Cybersecurity (RL Environments) — Mistral AI · Series D · Paris, FR · 2 weeks ago
  11. Applied Science - Research Engineer (Robotics) — Mistral AI · Series D · Singapore, SG · 2 weeks ago
  12. Research Engineer, Data Infrastructure (Language Modeling) — Cartesia · Series A · San Francisco, CA · $200K–350K · 2 weeks ago
  13. Research Engineer, Web Crawling — Thinking Machines Lab · Seed · San Francisco, CA · 2 weeks ago
  14. Research Operations, Reinforcement Learning — Anthropic · San Francisco, CA · $210K–260K · 2 weeks ago
  15. Research, Mid Training — Thinking Machines Lab · Seed · San Francisco, CA · 2 weeks ago
  16. Research Scientist - Environments, Data and Post-Training — Mercor · Series B · San Francisco, CA · $250K–500K · 3 weeks ago
  17. Applied Scientist (Internship in Paris or London) — Mistral AI · Series D · Seoul, KR · 3 weeks ago
  18. Research Intern, Frontier Agents (Summer 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · 3 weeks ago
  19. Research Intern, Frontier Agents (Winter 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · 3 weeks ago
  20. Systems Research Engineer Intern - GPU Programming (Winter 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · 3 weeks ago
  21. Systems Research Engineer Intern - GPU Programming (Summer 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · 3 weeks ago
  22. Research Intern, Model Shaping (Winter 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · 3 weeks ago
  23. Research Intern, Model Shaping (Summer 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · 3 weeks ago
  24. Research Intern, Inference (Winter 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · 3 weeks ago
  25. Research Intern, Inference (Summer 2027) — Together AI · Seed · San Francisco, CA · USD 58–70/hour · 3 weeks ago
  26. Research, Finetuning Science — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  27. Research Lead, Tinker, Fine-tuning Science — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  28. Research, Tinker, RL Systems — Thinking Machines Lab · Seed · San Francisco, CA · 3 weeks ago
  29. Research Engineer, Full Stack — Mistral AI · Series D · Palo Alto, CA · 4 weeks ago
  30. Research Software Engineer, Post Training — Thinking Machines Lab · Seed · San Francisco, CA · 4 weeks ago
  31. Member of Technical Staff, Research (2026 PhD New Grad) — Fireworks AI · Series D · San Mateo, CA · $200K–300K · 4 weeks ago
  32. Research Engineer, Cybersecurity RL (Reinforcement Learning) — Anthropic · Zurich, CH · 4 weeks ago
  33. AI Scientist - Physics Models — Mistral AI · Series D · Paris, FR · 5 weeks ago
  34. AI Scientist - Agentic Engineering — Mistral AI · Series D · Paris, FR · 5 weeks ago
  35. Research Engineer, Forge — Mistral AI · Series D · Paris, FR · 5 weeks ago
  36. Research Manager, Biological Safety — Anthropic · San Francisco, CA · $405K–485K · 5 weeks ago
  37. Research, General Agents — Thinking Machines Lab · Seed · San Francisco, CA · 6 weeks ago
  38. Research, Coding Agents — Thinking Machines Lab · Seed · San Francisco, CA · 6 weeks ago
  39. Research Scientist, APEX Benchmarks — Mercor · Series B · San Francisco, CA · $200K–500K · 6 weeks ago
  40. Staff+ Research Engineer, RL Data Platform — Anthropic · San Francisco, CA · $500K–850K · 6 weeks ago
  41. Research, Post-Training Evals — Thinking Machines Lab · Seed · San Francisco, CA · 6 weeks ago
  42. Research, Safety — Thinking Machines Lab · Seed · San Francisco, CA · 6 weeks ago
  43. Research, RL Scaling — Thinking Machines Lab · Seed · San Francisco, CA · 7 weeks ago
  44. Research Engineer – Benchmarking — Mercor · Series B · San Francisco, CA · $200K–500K · 7 weeks ago
  45. AI Research Engineer — Traversal · New York, NY · 7 weeks ago
  46. Staff+ Researcher, Cybersecurity Products — Anthropic · San Francisco, CA · $405K–485K · 2 months ago
  47. Member of Technical Staff - Post-Training — Reflection AI · Series B · San Francisco, CA · 2 months ago
  48. Research Scientist (London) — Goodfire · Series B · London, UK · GBP 150,000–300,000/year · 2 months ago
  49. Research Engineer, Code Agents Infra — Mistral AI · Series D · Palo Alto, CA · 2 months ago
  50. Research, Post-Training — Thinking Machines Lab · Seed · San Francisco, CA · 2 months ago

See all 126 developer tools AI research roles →

Companies hiring for this

Same role, other cities: AI research jobs in San Francisco · AI research jobs in London · AI research jobs in New York

Browse the whole index: All research roles · The developer tools AI research sector

Backed by: Lightspeed Venture Partners · NVentures · General Catalyst · Menlo Ventures

More searches: All collections · Roles · Locations · Sectors