STEM PhD Expert for AI Reasoning & Evaluation

Braintrust; Argentina; Remote; ARS 258,198,000 - 367,737,000; Full time

Benefits offered by this job

Remote contract

Job summary

Braintrust is hiring PhD-level experts for remote, flexible contract work to help train and evaluate advanced AI models. You'll review domain-specific content, identify model strengths and weaknesses, and guide improvements in technical reasoning. This short-term engagement runs through June with potential extensions, and compensation is up to $150/hr depending on expertise and performance.

Qualifications

• PhD (completed or in final stages) in a quantitative field such as ML/AI, CS, Engineering, Statistics, Mathematics or Physics.
• Fluent written English with ability to communicate complex ideas clearly.

Responsibilities

• Assess the factuality and relevance of domain-specific text produced by AI models.
• Craft and answer questions related to Machine Learning and AI.
• Evaluate and rank domain-specific responses generated by AI models.

Skills

Analytical thinking

Strong written English

Critical thinking

Domain expertise in ML/AI

Education

PhD in ML/AI/CS/Engineering/Statistics/Mathematics/Physics

Job description

We're hiring PhD-level experts to help train and evaluate advanced AI models. This is remote, flexible contract work where your academic expertise directly shapes how cutting-edge models reason, answer, and improve. You'll review AI-generated content in your field, identify where the model gets things right or wrong, and help raise the quality bar on technical reasoning.

This is a short-term engagement running through the end of June, with potential to extend depending on project needs.

Key Responsibilities

You May Contribute Your Expertise By

• Assessing the factuality and relevance of domain-specific text produced by AI models
• Crafting and answering questions related to Machine Learning and AI
• Evaluating and ranking domain-specific responses generated by AI models

What We're Looking For

• A PhD (completed or in final stages) in one of the following fields: Machine Learning / AI, Computer Science, Engineering, Statistics, or a closely related quantitative subdomain such as Mathematics or Physics
• Strong analytical and critical-thinking skills, with the ability to spot subtle errors in technical reasoning
• Fluent written English and the ability to communicate complex ideas clearly

Nice to Have

• Research experience (academic or industry)
• Prior experience with data annotation or AI model evaluation
• Experience reviewing or publishing research papers

Compensation

Up to $150/hr, depending on your area of expertise, depth of experience, and assessment performance.

Location

This role is fully remote. We are currently accepting applicants based in: United States, Canada, Puerto Rico, Mexico, United Kingdom, Australia, New Zealand, and Argentina.