Mathematics Specialist (Fluent in Portuguese - Brazil) – AI Trainer at Invisible Agency

Remote - Brazil

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This role seeks a mathematics expert fluent in Portuguese to train and evaluate AI language models, ensuring mathematical accuracy and improving reasoning.

Salary

USD 6 - 65/hour

Requirements

Education

  • Master’s or PhD in mathematics or a closely related quantitative field

Experience

  • Teaching experience
  • Research in pure or applied mathematics
  • Hands‑on experience with mathematical modeling
  • Peer‑reviewed publications

Skills

  • Algebra
  • Calculus
  • Number theory
  • Linear algebra
  • Differential equations
  • Statistics
  • Geometry
  • Mathematical logic
  • Discrete mathematics
  • Real analysis
  • Complex analysis
  • Optimization theory
  • Mathematical proofs
  • Set theory
  • Probability distributions
  • Cryptographic algorithms
  • Applied mathematics
  • Teaching
  • Research
  • Mathematical modeling
  • Prompt engineering
  • Evaluation metrics
  • Communication
  • Metacognitive communication

Languages

  • Portuguese

Responsibilities

  • Converse with the AI model on classroom problems and theoretical mathematics questions
  • Verify factual accuracy and logical soundness
  • Capture reproducible error traces
  • Suggest improvements to prompt engineering and evaluation metrics

Technologies

Large‑scale language models

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