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AI use among medical scientists, except epidemiologists is little observed so far. Measured exposure for medical scientists, except epidemiologists: 4% (little observed).

Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.

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About the job

ABOUT PERIODIC LABS

The most important scientific discoveries of our time won’t happen in a traditional lab. 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 an insatiable drive to push the boundaries of what’s scientifically possible.

ABOUT THE ROLE

You will work on the most important aspect of Scientific AI creation: evaluations and data. This means constructing cutting-edge evaluations based on advanced scientific use cases, sourcing and procuring external datasets, integrating internally generated experimental data into the training stack, constructing training environments for RL. You’ll ensure that the team always has the right assets, in the right shape, to evaluate and improve AI models.

You will work with computational and experimental scientists to translate complex scientific workflows into rigorous evaluations and agentic benchmarks, and partner with pretraining, midtraining, and reinforcement learning researchers to identify the data models needed, then build the datasets, environments, and pipelines to deliver it. Your goal will be to create a tight feedback loop between scientific use cases, model evaluation, and training data.

WHAT YOU’LL DO

- Own the evaluation and data strategy across the training stack, identifying capability gaps and shaping the roadmap with leads of physical science and AI research

- Work with domain experts to translate advanced scientific workflows into rigorous evals, benchmarks, and RL environments

- Source, evaluate, and procure external datasets across chemistry, physics, materials science, mathematics, simulations, and laboratory instrumentation

- Build robust pipelines to ingest, clean, and transform for training large-scale datasets from heterogeneous sources

- Build tooling and analysis workflows that help researchers inspect data, understand model failures, and determine which evaluations or datasets to develop next

YOU WILL THRIVE IN THIS ROLE IF YOU HAVE

- Designed evaluations, benchmarks, or RL environments for language models, agents, or scientific AI systems

- Built large-scale data pipelines for LLM pretraining, midtraining, post-training, or evaluation

- Strong judgment about dataset and evaluation quality, including scientific relevance, coverage, provenance, licensing, and contamination risks

- Strong software and data engineering skills, including familiarity with data processing at scale, dataset versioning, lineage tracking

- A research-oriented mindset: you form hypotheses about data, run controlled experiments, measure model outcomes, and iterate with rigor

- Research experience in areas such as materials science, solid state chemistry, chemistry, computational physics, semiconductors

MECHANICS

Minimum education: Bachelor’s degree or similar experience

Location: Menlo Park, CA or Montreal, Canada

Compensation: $250,000-350,000 + equity

Visa sponsorship: Yes, we sponsor visas.