Senior research scientist who left Google DeepMind in 2023 after seven years at the laboratory. In a September 2026 statement, Schwarz explicitly said concerns about the concentration of power represented by the major frontier AI labs caused him to leave DeepMind and later reject offers from the other two. His personal website confirms his former role and tenure, while his August 2024 departure announcement establishes that he left in 2023. Schwarz later pursued research and company-building outside the three leading frontier laboratories, including work on sovereign AI intended to broaden institutional control over advanced models.