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Member of Technical Staff - Mid-training

SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for indivi

Company

xAI

Location

Palo Alto, CA

Status

Open

Posted

2025-10-31T23:21:47+00:00

xAI is hiring a Member of Technical Staff for mid-training, based on-site in Palo Alto. The role centers on scaling synthetic coding data to trillions of tokens with large-scale Docker verification, distilling flagship models into faster ones via synthetic data, tuning mid-training data mixtures to raise the ceiling for reinforcement learning, building long-context data recipes, and designing evaluations for mid-training checkpoints. The posting asks for expertise in ML scaling laws, experiment design, data curation across text, image, audio and video, and strong Spark and Ray engineering. Salary listed: $180,000–$440,000.