Nuclear Medicine Physicist - Expert

Mercor; Berlin; Vor Ort; EUR 65.000 - 105.000; Vollzeit

Zusammenfassung

Mercor is assembling a panel of radiological safety experts to red-team frontier AI models. You will write prompts across benign, dual-use and adversarial levels and evaluate responses against a policy standard.

A written rationale for each judgment is required, with sample references and links if available. This role demands careful distinction between routine professional questions and sensitive dual-use content, using industry experience in nuclear medicine or radiopharmacy to guide

Qualifikationen

• Background in nuclear medicine or radiopharmacy physics is required.
• Experience with radiopharmaceutical production, QC, GMP systems advantageous.
• Authorised Medical Physicist or Authorised User support experience is a strong signal.

Aufgaben

• Write challenging single-turn prompts across benign, dual-use and adversarial levels.
• Evaluate model responses against a policy standard and judge handling quality.
• Draft reference answers and technical rationales for misuse scenarios.

Kenntnisse

Nuclear medicine background

Radiopharmacy physics

RSO target handling

Medical physicist experience

Authorized Medical Physicist/User

Jobbeschreibung

About the work

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.

You will:

• 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.

Background we're looking for

We’re looking for people who produce and handle medical isotopes - the legitimate-use half of the dual-use line, held as a real custody responsibility. What matters most is being able to tell a routine professional question from one that’s fishing for something else: the same activity and shielding figures that let a patient go home describe a source someone else

Examples of relevant backgrounds (ideally with red-teaming experience):

• Nuclear medicine or radiopharmacy physicist - therapy dosimetry, I-131, Lu-177 and Y-90 work, patient release criteria
• Cyclotron or radiochemistry facility RSO - target handling, PET isotope production, hot-cell operations
• Medical physicist with brachytherapy source custody - HDR and LDR sources, inventory and source exchange
• Radiopharmaceutical production and QC under GMP or an equivalent quality system
• Authorised Medical Physicist or Authorised User support on a medical radioactive materials licence

What this role demands beyond technical depth

This is writing-intensive work. Every judgment you make needs a written rationale that a non-specialist can follow. Prior technical writing, published research, or expert witness experience is a strong signal; please include a sample or link. You will also be reading and writing about misuse scenarios in your field for sustained periods. We brief experts on this in advance, and you can pause or step away at any point without penalty.

Before you apply

Your work here will not involve, and must not draw on, classified or export-controlled information, or anything covered by an NDA or prepublication review obligation.