We are seeking a Senior Research Scientist to advance our understanding of intelligence by developing a rigorous theory of latent internal structure in neural networks and its relation to computation and behavior. The role involves bridging theory and experiment across fields like deep learning, physics, neuroscience, and information theory, with projects including belief discovery in large language models, extending theories of intelligence, studying generalization, stress-testing frameworks, and exploring biological neural data. Candidates should have strong quantitative expertise, a PhD or equivalent, and experience in ML and interpretability. The position offers ownership of research, collaboration, and opportunities to build new theories, code, and experiments in a dynamic environment focused on AI safety and the science of intelligence. We value curiosity, independence, effective communication, and unconventional backgrounds. Learn more at astera.org.