Vertex Inc
King of Prussia, PA
Job Description: Job Summary The Principal Engineer, AI Model Training & Data Strategy owns how Commercial AI (CAI) products train, fine-tune, and evaluate models, and how the data behind those models is sourced, curated, stored, and governed. This is primarily a model-training role with a strong secondary focus on the data management and pipelines that make high-quality training possible. The role defines the enterprise training strategy and the standards for how and where training data from Commercial AI products is stored, versioned, and reused. Essential Job Functions and Responsibilities Define and own the end-to-end model training strategy across CAI products, spanning traditional AI/ML models and large language models Fine-tune large language models using parameter-efficient techniques (e.g., QLoRA, LoRA, PEFT) and full fine-tuning where warranted Train, evaluate, and tune traditional AI/ML models (classification, regression, ranking, clustering, and...