Mathematics Expert

AI Trainer Jobs; United States; Remote; USD 103,000 - 172,000; Full time

Job summary

AI Trainer Jobs is seeking 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.

Ideal candidates hold a Master’s or PhD in mathematics (or a Bachelor’s with 2+ years of relevant experience), and can write clear, rigorous proofs in English. This remote role offers flexible hours and hourly compensation.

Qualifications

• Master’s or PhD in mathematics, or a Bachelor’s plus 2+ years of relevant experience.
• Strong command of core areas: analysis, algebra, number theory, probability, combinatorics or geometry.
• Ability to write clear, rigorous proofs.
• Excellent written English.
• Reliable, remote-friendly, deadline-driven work style.

Responsibilities

• Write proof-based and computational problems with complete, rigorous solutions.
• Verify AI-generated solutions step by step and identify gaps or calculation errors.
• Classify error types to inform model improvements.
• Write grading rubrics and reference solutions at a consistent difficulty.
• Review problems for correctness, clarity and originality.
• Provide clear explanations suitable for model training.
• Participate in calibration and feedback sessions to maintain quality.

Skills

Proof writing

Mathematical reasoning

Academic English writing

Independent work

Education

Master’s degree in Mathematics

PhD in Mathematics

Bachelor’s + 2 years experience

Tools

Python

Mathematica

Lean

Job description

No related skills for this job.

Available in

All Countries

About the Role

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.

Who We're Looking For

Required Qualifications

• Master’s or PhD in mathematics, or a Bachelor’s plus 2+ years of relevant experience.
• Strong command of at least one core area (analysis, algebra, number theory, probability, combinatorics or geometry).
• 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

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Engagement and payment are subject to successful verification and to applicable sanctions, export-control, tax and employment laws.

The contractor agreement will set out ownership and licence terms for the work you deliver (to be confirmed by Rex Legal).

Compensation

USD $75–125 per hour, adjusted by country of residence.