Research Engineer, Midtraining
We're an AI and physical sciences company building state-of-the-art models to accelerate breakthroughs across materials, energy, and beyond. Backed by world-class investors and growing rapidly, we operate at the pace the frontier requires. Our team brings deep expertise, genuine ownership, and a drive to push the boundaries of what's scientifically possible.
About the Role
We're training frontier models to develop deep scientific knowledge and reasoning for scientific discovery. As a Midtraining Research Engineer, you'll take base models and improve their scientific reasoning: curating and generating data, building evals, and running large-scale training experiments. Your work will also lay the groundwork for our pre-training efforts down the line.
What You'll Do
Identify, process, and curate novel sources of scientific data for large-scale model training.
Generate high-quality synthetic data to fill gaps in scientific knowledge and reasoning.
Build evaluations that correlate with downstream scientific task performance, working closely with RL researchers, physicists, and chemists.
Develop and apply techniques such as self-di
