Staff AI Engineer: Post-Training & RL

SpaceXSI is seeking a Member of Technical Staff specializing in post-training and reinforcement learning. The role focuses on advanced challenges such as reward modeling, preference optimization (RLHF/DPO), and RL to enhance reasoning, truthfulness, and real-world capabilities. You will gain clarity on your first project before an offer, and you will join a meritocratic team pushing the boundaries of AI alignment.

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