Data Science AI Model Evaluation Expert

Eligibility: Based in an English-speaking country
About OpenTrain
OpenTrain is the centralized, open platform where AI training and data-labeling freelancers find work, consolidate opportunities across platforms, and build a unified AI training portfolio they control. We make specialized AI training work easier to track, apply for, and grow into a durable freelance career.
About this role
OpenTrain is recruiting contractors to improve how AI models handle data science, statistics, machine learning, experimentation, and quantitative reasoning. You will apply professional judgment to evaluate model outputs, create expert-level prompts and reference materials, and identify methodological and statistical weaknesses. This work is designed for data scientists and quantitative professionals who can assess complex technical reasoning and communicate their conclusions precisely.
What you will do
Evaluate AI model outputs on data science, statistics, machine learning, experimentation, and quantitative reasoning problems. Create expert-level prompts, datasets, and reference solutions that reflect sound technical practice. Identify flawed methodology, statistical errors, and weaknesses in quantitative reasoning. Provide structured feedback that helps improve model capability. Distinguish correct, incomplete, and methodologically unsound approaches using clear technical judgment.
Required skills
Candidates should have at least one year of professional experience at a top company in technology, finance, or research, including recent experience within the past seven years. An undergraduate degree from a top-ranked university is preferred. Strong knowledge of data science, statistics, machine learning, experimentation, and quantitative reasoning is required, along with clear written communication of technical concepts. Contractors should be able to work independently in a remote setting and communicate effectively in English.
Schedule, location, and pay
This is a remote contractor opportunity for professionals based in an English-speaking country. The advertised compensation range is $245‑$280 per hour.
Why work with OpenTrain
OpenTrain gives freelancers one place to manage AI training opportunities instead of rebuilding proof of work on every platform. A stronger OpenTrain profile helps you show credible experience, discover roles that match your skills, and turn AI training and data-labeling work into a long-term portfolio.

Work arrangement
Yes