Mercor
MercorVerified listing

Mathematics Expert - Remote AI Training (Part-Time)

40–75/hr
Remote
part-time
Posted September 15, 2026
Not sure you qualify? Match your resume

Listing checked September 16, 2026 · pay as published by Mercor

Key details

Pay
$40–75/hr
Location
Remote
Job type
part-time
Posted
September 15, 2026

Overview

Mercor keeps a standing pool of mathematicians for AI training and evaluation projects rather than a single opening. Research teams at major AI labs need human judgment on math problems and proofs, and they rely on experts to build rubrics and grade model output. Work can arrive on short notice, so the pool stays open even when no project runs this week. Assignments cover tasks like writing research or competition-level problems, checking each proof step, reviewing edge cases, and spotting answers that look right but lack proof. Contracts in this field have paid $40 to $75 per hour, and Mercor sets each rate by project scope and depth.

What You'll Do7

  • Write original math problems at research or competition level, including the statement, intended solution, and reference answer for grading model attempts.
  • Review model-written proofs step by step, checking whether each move follows and whether edge cases receive proper treatment.
  • Confirm that appeals to known theorems meet all hypotheses before accepting them as valid.
  • Flag correct answers that rest on arguments which do not prove the result.
  • Point out unclear project instructions and ask for missing details before work begins.
  • Explain mathematical reasoning in writing so project teams can audit the evaluation.
  • Compare model solutions against reference answers and note where reasoning breaks down.

Requirements5

  • Graduate degree in mathematics or a related field, or a research or competition record that shows comparable depth.
  • Ability to tell a rigorous proof from a convincing sketch and state the exact gap.
  • Written communication skills strong enough to explain reasoning to readers who need precise math, not vague summaries.
  • Comfort with ambiguous tasks and a habit of raising unclear instructions instead of guessing.
  • Attention to edge cases and theorem hypotheses when judging model output.

Who Should Apply

The ideal candidate holds a graduate math degree or has a serious competition or research background and can read a proof for gaps in logic. You should enjoy writing out your reasoning, because most tasks ask you to justify a grade or explain why a model answer fails. This work suits mathematicians who can handle a task with loose instructions and still ask sharp questions about what is missing. Candidates tend to score lower when they accept a proof that has a hidden flaw, or when their written feedback states a verdict without showing the step where the argument breaks. A thin math background or a dislike for explaining your thought process will make matching unlikely.

Salary Insight

The listing states a range of $40 to $75 per hour. Mercor sets each contract rate by project scope and depth, so competition-level problem writing or advanced proof grading tends to sit near the top, while routine evaluation work may fall closer to the lower end. No other pay details appear on this standing listing.

Pay and demand for AI Training roles

Market estimates from live NearSkill listings — separate from this job's published terms.

Aggregated

This role · as published

$40–75/hr

Taken from the listing itself.

Typical pay · estimated

$70/hour

Median of 1,264 similar roles that publish pay · 301 publish only a top rate; those count at the rate they gave

Most AI Training roles pay $40–$95 per hour. This role's pay falls inside that range.

Typical rangeMedian payThis role

Rates shown per hour. Yearly and monthly pay converted; one-time fees and non-USD pay are not included.

Live similar roles
1,462
Listed in last 30 days
800
Remote
98%

Hiring most right now: micro1 (388) · SME Careers (253) · Mercor (220)

Most requested skills · share of roles

  • ai evaluation
    14%
  • llm evaluation
    12%
  • data annotation
    12%
  • ai training
    12%

Figures from AI Training roles live on NearSkill when this page loaded. A role can close before you apply, so check the listing itself.

Compare your resume against these roles

Required skills

MathematicsProof VerificationMathematical ProofsResearch MathematicsCompetition MathematicsAI TrainingAI EvaluationModel EvaluationProof GradingMath Problem DesignTheorem AnalysisEdge Case Analysis

How applying works

  1. 1. Pre-screen on NearSkill

    A quick application on NearSkill checks your fit against this role.

  2. 2. Finish on the employer’s site

    We hand you to Mercor’s official application page to complete the form.

  3. 3. Wait for a response

    The employer’s hiring team reviews applications and gets back to you.

Share:

Similar jobs

Open roles that match this listing's skills and level.

View all AI Training jobs