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SME Careers
micro1
Mercor
Sovrano AIBraintrust 
Turing
Anyone AI
Handshake AI
REX / RemoExperts
Terac
AI Training · freelance
STEM PhD Expert for AI Reasoning & Evaluation
Outlier lists this freelance opportunity through Braintrust. Skills include Machine Learning, Engineering, Physics.
PLATFORMBraintrust
LOCATIONUnited States · Canada · Argentina +5 more
PAY$50–$150/hr
SCHEDULE35 hrs/week
LAST CHECKED11 Nov 2026
THE OPPORTUNITY
Put your skills to work.
Outlier lists this freelance opportunity through Braintrust. Skills include Machine Learning, Engineering, Physics.
- Contract
- short
- Role
- Science & Research
- Hours per week
- 35
- Openings left
- 50
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.
Role details are copied from the Braintrust listing and can change. Check the platform before you apply.
Relevant skills
Machine LearningEngineeringPhysics
A few things to check
- Location and experience requirements.
- Schedule, compensation, and assessment process.
- Current availability on Braintrust.
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