Bill Jia holds the title of Janitor of Engineering for Core ML/AI at Google, a role he describes as providing sanitation and janitorial services to clear technical, people, organizational, and communication issues to advance Artificial Intelligence and Machine Learning. His work involves close partnership with Google DeepMind to design, pre-train, and fine-tune models such as Gemini (e.g.
, Gemini 2.0/2.5/3.
0) and GenMedia models (e.g., Veo 3, Imagen 4).