Mercor
MercorVerified listing
Remote

Bilingual Portuguese STEM Expert (PhD) — AI Safety | $50-$54/hr Remote

50–54/hr
Remote · Remote — Western Europe preferred
Posted September 4, 2026
part-time

Overview

A PhD-level scientist who speaks Portuguese fluently can make AI systems safer. You'll evaluate how large language models respond to advanced scientific questions in chemistry and biology, while writing prompts that test their knowledge. Working remotely part-time, you'll receive full training, so previous AI experience isn't necessary. The rate is $50 to $54 per hour, and candidates in Western Europe get priority, though others are welcome.

What You'll Do4

  • 1Craft advanced prompts in Portuguese that probe scientific topics at a PhD level.
  • 2Judge AI responses for scientific accuracy, usefulness, and safe handling of sensitive material.
  • 3Annotate outputs using structured guidelines to rate quality and safety.
  • 4Classify prompts and user conversations into predefined categories based on content and risk.

Requirements8

  • 1Hold a PhD in chemistry or biology, or a closely related field (completed or in progress).
  • 2Speak Portuguese at a native or near-native level and write English at a business level.
  • 3Have hands-on experience with modern lab or computational methods in your specialty.
  • 4Apply sound judgment on scientific safety and handling dual-use information.
  • 5Demonstrate depth in a specific subfield like organic synthesis, molecular biology, virology, or genetics.
  • 6Know chemical safety, biosecurity, or hazardous materials handling (preferred).
  • 7Track record in radiological or nuclear science is a plus, especially radiochemistry or radiation physics.
  • 8Prior work reviewing, grading, or red-teaming technical material adds value.

Who Should Apply

Someone with a PhD in a scientific field and top-tier Portuguese stands out. This role suits experts who enjoy applying their knowledge to content evaluation and who think critically about safety. It's a poor fit for generalists without deep specialization or for those who aren't fluent in Portuguese. Candidates get skipped when they lack clear evidence of subfield expertise or when their writing in Portuguese isn't rigorous enough. Showing examples of your scientific writing can make a real difference.

Salary Insight

You'll earn between $50 and $54 per hour for this contract. That hourly range typically suits a specialist with doctoral-level expertise and native language skills, matching what similar AI safety projects pay. The actual total depends on hours worked.

Location

Typeremote
LocationRemote — Western Europe preferred
This is a remote position

Required Skills

portugueseenglishscientific writingchemistrybiologyai safetyprompt engineeringcontent evaluationannotationbiosafetybiosecurityradiochemistrynuclear chemistrymolecular biologymicrobiologyvirologygeneticsred teaming

Application Tip

In your application, present two or three concrete examples of how you would construct a challenging question in your domain, in Portuguese. Also mention any prior experience with biosafety or nuclear safety reviews to boost your fit score.

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