Mathematics Expert
We are looking for mathematicians to help train and evaluate AI models on advanced mathematical reasoning.
- Pay
- Firm hourly pay: USD $75–125 per hour, adjusted by country of residence.
- Location
- Worldwide
- Eligibility
- Remote worldwide
- Qualification difficulty
- Selective
How current is this information?
The public role and application path were checked. Details can still change; this is not an endorsement or guarantee.
- Platform
- REX / RemoExperts
- Fit category
- General professional
- Listing/source checked
- Oct 7, 2026
- Apply link checked
- Oct 7, 2026
Application
Continue to the current REX / RemoExperts listing
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What this role involves
We are looking for mathematicians to help train and evaluate AI models on advanced mathematical reasoning. You will write problems with complete solutions, verify model reasoning step by step, and classify the errors that models make.
**
Key Responsibilities
** - Write proof-based and computational problems with complete, rigorous solutions. - Verify AI-generated solutions step by step and identify logical gaps, unjustified steps and calculation errors. - Classify error types so the project team can see where models fail. - Write grading rubrics and reference solutions at a consistent level of difficulty. - Review problems written by other experts for correctness, clarity and originality. - Provide clear written explanations suitable for model training.
- Follow project guidelines, take part in calibration and review sessions, and incorporate feedback to keep quality consistent.
Before you apply
Review the main fit signals and unresolved details before opening the platform.
Why it may fit
- Required Qualifications**
- Master's or PhD in mathematics, or a Bachelor's plus 2+ years of relevant experience.
Check before applying
Reasons to pause
- The opportunity no longer appears in REX's complete public Open Opportunities inventory
- The current role does not show applicant compensation
Still to verify
- Review the current REX opportunity before applying. Country eligibility, exams, identity verification, device requirements, compensation, project availability, and task access can change by role.
What to prepare
- Use examples from your own professional experience and follow REX assessment rules
- Review the current public REX opportunity before applying because project details can change
Role tools
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Requirements
- Ability to write clear, rigorous proofs.
- Excellent written English.
- Reliable, detail-oriented, and able to work independently and meet deadlines in a remote setting.
- Preferred Qualifications**
- Research or mathematical competition experience.
- Experience with symbolic or numerical tools (Python, Mathematica, Lean).
- Teaching or problem-writing experience.
- Legal and Compliance Notice**
- All content you submit must be lawful, and you must have the right to share it.
Best for
- Ability to write clear, rigorous proofs.
Skip this if...
- You cannot meet the role-specific country, skill, device, exam, or identity requirements