Foundation AI Engineer LLMs, Fine-Tuning & Scale

XVI Labs in Cambridge, MA is seeking a research engineer to develop end-to-end workflows for foundation models, from data preparation through fine-tuning and evaluation. You will design experiments across architectures and objectives, tracking results to improve model quality. Collaborate with engineers to scale GPU training, deploy models, and optimize inference. Proficiency in Python, PyTorch, and the Hugging Face tools is essential; experience with RL and fine-tuning LLMs is highly valued.

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