Brandon Amos leaves Meta to join Reflection AI engineering team
Brandon Amos, a long-time researcher in Meta’s Fundamental AI Research (FAIR) group, took to LinkedIn to confirm he has left the company and joined Reflection AI in New York.
Reflection AI develops open foundation models and works on pre-training and post-training pipelines, with a stated focus on advancing reinforcement learning approaches at scale.
Amos joined Meta more than six years ago as a research scientist. His update reflects on his time at the company and outlines why he is shifting to a startup environment.
Shift toward startup model development
In his post, Amos wrote that he started in the FAIR lab “as my first job out of the PhD,” noting that the group shaped his early research career. He added: “I am grateful for everything we have shared and proud of everything we created together.”
Reflection AI describes its mission as building frontier open intelligence systems and making them widely accessible. Its team includes engineers and researchers from organizations such as DeepMind, OpenAI, and Anthropic. The company positions superintelligence development as a technical effort that should remain open, interrogable, and available to builders.
Amos stated that he plans to work on post-training and reinforcement learning pipelines as part of the company’s next stage of model development.
The move places Amos in Reflection AI’s core technical team. His update links the shift to a focus on building models in a startup environment and contributing to research that targets future large-scale systems.
Amos ended his announcement with: “Superintelligence will be one of the most significant advancements of our lifetimes, resulting in a computational reflection of ourselves. We believe it should be safe, open, and accessible to all. I am excited to be jumping into the post-training and reinforcement learning pipelines to advance capabilities and alignment.”
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