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Health Physicist
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About the Role
Mercor is assembling a panel of radiological safety experts to red-team frontier AI models. The goal is to test whether a model can correctly judge the misuse potential of a technical request — answering legitimate questions fully while refusing genuinely dangerous ones.
What You'll Do
- Write challenging single-turn prompts in your domain, labelled across three levels: benign, dual-use, and adversarial.
- Evaluate the responses that come back against a defined policy standard, and judge whether each was handled correctly.
- Write the reference answer — what a correct response looks like, and the technical reasoning for why.
- This domain lives on the dual-use line more than most. The same isotope underpins cancer therapy and industrial radiography; the same shielding calculation protects a worker and conceals a source. A model that refuses a routine dose question is failing as badly as one that answers a question it shouldn't. Drawing that line reliably is why we need practitioners rather than generalists.
You're a Good Fit If You
- We're looking for people who have done the measurement and the dose planning themselves, in a facility where getting it wrong mattered — survey, assay, contamination control, work planning. What matters most is being able to tell a routine professional question from one that's fishing for something else: the same shielding calculation protects a worker and conceals a source. You will be writing prompts that sit exactly on that line, then judging whether the model held it.
- Examples of relevant backgrounds (ideally with red-teaming experience):
- Operational health physicist at a DOE site, national laboratory or reactor facility — survey, assay, contamination control
- Internal dosimetry or bioassay specialist — intake assessment, dose reconstruction, committed dose
- Decommissioning and D&D health physicist — characterisation surveys, MARSSIM, release criteria
- Accelerator or reactor health physics — activation products, neutron fields, shielding design and verification
- Dose planning for high-hazard work — RWP development, ALARA reviews, hot-cell and glovebox operations
- What this role demands beyond technical depth
Role Highlights
Pay & Payout
Independent contractor engagement. Apply via the link below - Mercor handles onboarding and pays weekly via Stripe or Wise.
Common Questions
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