Mathematics Specialist – Freelance AI Trainer

Job not on LinkedIn

🔥 0 minutes ago

🇧🇷 Brazil – Remote

💵 $6 - $65 / hour

⏳ Contract/Temporary

🟡 Mid-level

🟠 Senior

🤖 Artificial Intelligence

👻 Ghost score 1%

What it means: the chance that no one is really hiring for this job.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Invisible Technologies

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2015

💼 Consulting

🏥 Healthcare

📦 Logistics

💰 $100M Series unknown on 2025-10

Consulting • Healthcare • Logistics

Invisible Technologies is an enterprise AI platform and services company that builds and deploys production-grade AI systems for large organizations. They combine a modular SaaS platform (data platform, process builder, agents, evaluations) with an expert human marketplace to train models, automate complex back-office workflows, power contact centers, provide computer vision and demand-forecasting solutions, and ensure ongoing evaluation and governance. Invisible works across sectors (finance, healthcare, public sector, sports, retail) to integrate AI into real operational systems and scale outcomes.

📋 Description

• Converse with AI models on classroom problems and theoretical mathematics questions • Verify factual accuracy and logical soundness • Capture reproducible error traces and document model failure modes • Suggest improvements to prompt engineering and evaluation metrics • Help train and improve next-generation AI language models

🎯 Requirements

• Mathematics expertise in algebra, calculus, number theory, linear algebra, differential equations, statistics, geometry, mathematical logic, and discrete mathematics • Ability to work on real and complex analysis, optimization theory, mathematical proofs, set theory, probability distributions, cryptographic algorithms, and applied mathematics • Fluent in Portuguese (Brazil) • Clear, metacognitive communication and ability to show your work • A master’s or PhD in mathematics or a closely related quantitative field is ideal • Peer-reviewed publications, teaching experience, research in pure or applied mathematics, or hands-on experience with mathematical modeling signal fit

🏖️ Benefits

• Secure computer and high-speed internet supplied by contractor • Company-sponsored health insurance does not apply • Company-sponsored PTO does not apply

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