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Research Engineer / Scientist, Post-Training @ Letta

San Francisco, California, USOnsiteFull Time
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About this role

Research Engineer / Scientist, Post-Training at Letta. Location: San Francisco, California, United States. Role: Train models, Design mechanisms, Build infrastructure Requirements: In-person, SF role requiring Python and PyTorch; post-training techniques (SFT, RL, reward models, preference learning); strong research output and practical impact. Category: Research and Development (R&D) Seniority: Mid Level Tools: Python, PyTorch, SFT, reinforcement learning, reward models, preference learning Commitment: Full Time Workplace: Onsite Languages: English

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