
Grafton Sciences is focused on building physical superintelligence to accelerate scientific discovery. Their mission is to create systems capable of autonomous scientific discovery, utilizing tools that expand our capabilities. They are developing an at-home early detection platform for cancer, leveraging advances in synthetic biology and nanotechnology. With a $42.5 million contract from ARPA-H, Grafton aims to detect over 48 tumors at Stage I, representing a significant portion of the global cancer burden. Their approach integrates computational modeling, automated experimentation, and materials engineering, positioning them as leaders in the field of disease detection and scientific innovation.

Grafton Sciences is focused on building physical superintelligence to accelerate scientific discovery. Their mission is to create systems capable of autonomous scientific discovery, utilizing tools that expand our capabilities. They are developing an at-home early detection platform for cancer, leveraging advances in synthetic biology and nanotechnology. With a $42.5 million contract from ARPA-H, Grafton aims to detect over 48 tumors at Stage I, representing a significant portion of the global cancer burden. Their approach integrates computational modeling, automated experimentation, and materials engineering, positioning them as leaders in the field of disease detection and scientific innovation.
About Grafton Sciences We’re building physical general intelligence — autonomous systems that can experiment, reason, and discover in the physical world. With deep technical roots and real-world progress at scale (e.g., a $42M NIH project), we’re pushing the frontier of physical AI. Joining us means inventing from first principles, owning real systems end-to-end, and helping build a capability the world has never had before.
About The Role We’re seeking a Senior RL Research Scientist to design and train reinforcement learning systems that optimize tool control, process tuning, and long-horizon workflows. You’ll build RL environments grounded in real physics, simulation, and digital twins; integrate dense verifiers; design safe RL strategies; and drive the transition from offline data to robust online behavior. This role spans algorithm development, systems integration, and hands-on experimentation in complex, high-dimensional domains.
Qualifications
Above all, we look for candidates who can demonstrate world-class excellence. Compensation We offer competitive salary, meaningful equity, and benefits.