| Founding Research Engineer | Raindrop | Series A | San Francisco | Oct 28, 2026 |
| Research Engineer | Taste Labs | Seed | San Francisco | Oct 28, 2026 |
| Research Engineer Intern - Environments, Data and Post-Training | Mercor | Series C | San Francisco | Oct 27, 2026 |
| Research Engineer, Intern – Benchmarking | Mercor | Series C | San Francisco | Oct 27, 2026 |
| Senior Research Engineer | Turing | Series E | Multiple locations | Oct 25, 2026 |
| Senior Research Engineer, Frontier Data | Turing | Series E | Multiple locations | Oct 25, 2026 |
| Senior Research Engineer, SWE | Turing | Series E | Multiple locations | Oct 25, 2026 |
| Staff Research Engineer | Turing | Series E | Multiple locations | Oct 25, 2026 |
| Staff Research Engineer, Enterprise Knowledge | Turing | Series E | Multiple locations | Oct 25, 2026 |
| Staff Research Engineer, Frontier Data | Turing | Series E | Multiple locations | Oct 25, 2026 |
| Research Engineer | David AI | Series B | San Francisco | Oct 23, 2026 |
| Research Engineer, Chip Design RL | Anthropic | Series G+ | San Francisco, CA | Oct 21, 2026 |
| Research Engineer, RL Frontiers | Etched | Series D | San Jose | Oct 21, 2026 |
| Research Engineer, Scientific Data & Workflow Infrastructure | Lila Sciences | Series B | Multiple locations | Oct 21, 2026 |
| Senior / Engineer II, AI Lab Research Engineer | Lila Sciences | Series B | Multiple locations | Oct 21, 2026 |
| Staff / Principal Research Engineer, AI Safety Mitigations | Lila Sciences | Series B | Multiple locations | Oct 21, 2026 |
| Research Engineer, Cybersecurity RL (Reinforcement Learning) | Anthropic | Series G+ | Multiple locations | Oct 20, 2026 |
| Research Engineer, Interpretability | Anthropic | Series G+ | San Francisco, CA | Oct 20, 2026 |
| Security Engineer / Research Engineer, RL Security | Anthropic | Series G+ | Multiple locations | Oct 20, 2026 |
| Research Engineer, Post-Training | Deepgram | Series C | Multiple locations | Oct 19, 2026 |
| Research Engineer - RL Infrastructure | Prime Intellect | Series A | Multiple locations | Oct 19, 2026 |
| Research Engineer / Scientist - Reinforcement Learning | Prime Intellect | Series A | Multiple locations | Oct 16, 2026 |
| Research Engineer - Pre-training Data | Prime Intellect | Series A | Multiple locations | Oct 16, 2026 |
| Research Engineer - Data and Evaluation | Prime Intellect | Series A | Multiple locations | Oct 16, 2026 |
| Research Engineer - Inference | Prime Intellect | Series A | Multiple locations | Oct 16, 2026 |
| Research Engineer - Pre-training | Prime Intellect | Series A | Multiple locations | Oct 16, 2026 |
| Internal Acceleration, Research Engineer (ASIC) | Etched | Series D | San Jose | Oct 15, 2026 |
| Internal Acceleration, Research Engineer (Hardware) | Etched | Series D | San Jose | Oct 15, 2026 |
| Internal Acceleration, Research Engineer (Production) | Etched | Series D | San Jose | Oct 15, 2026 |
| Internal Acceleration, Research Engineer (Kernels) | Etched | Series D | San Jose | Oct 15, 2026 |
| Research Engineer, Safety & Alignment | Cognition | Series E | San Francisco | Oct 9, 2026 |
| Applied Scientist / Research Engineer — Data Quality & Evaluation | Maxinsights | Seed | Santa Clara | Oct 9, 2026 |
| Robotics Research Engineer / Scientist — Robot Learning | Maxinsights | Seed | Santa Clara | Oct 9, 2026 |
| Research Engineer — Robotics Simulation & Evaluation | Maxinsights | Seed | Santa Clara | Oct 9, 2026 |
| Embodied AI / VLA Research Engineer | Maxinsights | Seed | Santa Clara | Oct 7, 2026 |
| Research Engineer, RL Env | Mecka AI | Series B | Multiple locations | Oct 7, 2026 |
| Research Engineer, Simulation & World Models | Mecka AI | Series B | Multiple locations | Oct 7, 2026 |
| Research Engineer | Graphon AI | Seed | San Francisco | Oct 6, 2026 |
| Research Engineer, Applied Research | Sierra | Series E | San Francisco, CA | Oct 5, 2026 |
| Staff Research Engineer, Multi-Agent Scaling | Anthropic | Series G+ | Multiple locations | Oct 2, 2026 |
| Research Engineer, RL Engineering | Anthropic | Series G+ | Multiple locations | Oct 1, 2026 |
| Research Engineer, Content Understanding | Exa | Series C | San Francisco, California | Oct 1, 2026 |
| Research Engineer, Index Intelligence | Exa | Series C | San Francisco, California | Oct 1, 2026 |
| Research Engineer, Post-training | Medra | Series A | San Francisco | Oct 1, 2026 |
| Research Engineer / Performance Engineer, RL Distributed Systems | Anthropic | Series G+ | Multiple locations | Sep 29, 2026 |
| Research Engineer - Benchmarks | Firecrawl | Series B | Multiple locations | Sep 29, 2026 |
| Research Engineer, Post-Training Model Evaluations | Anthropic | Series G+ | Multiple locations | Sep 27, 2026 |
| Research Engineer | Assort Health | Series C | San Francisco | Sep 24, 2026 |
| Research Engineer, Data Infrastructure (Language Modeling) | Cartesia | Series B | *HQ - San Francisco, CA | Sep 24, 2026 |
| Research Engineer, ML Infrastructure | Chai Discovery | Series C | San Francisco office | Sep 24, 2026 |