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Mercor · Finance & specialist

ML Challenge Task Auditor

Listed on Mercor as “ML Challenge Task Auditor

$70-$90/hrRemoteContractPaid in USD
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What this actually is

You bring your specialist expertise to AI evaluation. The shape of the work varies but the pattern is the same: review outputs, rate quality, write prompts, flag errors. The platform title (ML Challenge Task Auditor) reflects the rate band and the expertise required, not the day-to-day work.

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Can you do this on your visa?

F-2 / F-4 / F-5 / F-6: open. E-1 to E-7: needs concurrent-employment permit. D-2 / D-4 students: S-3 permit, 20 hr/week cap. D-10 / D-8: case by case.

Korean tax on USD income

First 5 years in Korea: foreign-source income only taxed if remitted into Korea. After year 5: worldwide income. Full tax guide.

Original posting from Mercor

Evaluate the quality, correctness, and methodological rigor of applied machine-learning tasks used to train and evaluate a frontier AI lab's models. You'll assess experiment design, model-selection reasoning, and evaluation methodology - and provide clear, rubric-based written feedback.

Basic Qualifications

• 3+ years hands-on applied/experimental ML (experiment design, model selection, hyperparameter tuning, evaluation methodology)

• Strong grasp of data-quality rigor: leakage detection, metric gaming, and train/test/CV hygiene

• Proficiency with standard ML frameworks (PyTorch, TensorFlow, scikit-learn, XGBoost)

• Ability to critique ML claims against evidence and reproduce results

Preferred Qualifications

• Competition / benchmark experience (e.g., Kaggle)

• Graduate research or publication record in applied ML

• Prior task-grading or peer-review experience

Note: this role evaluates applied/experimental ML rigor - it is not an LLM-application-building or MLOps role.

Quoted from Mercor’s public listing on 2026-09-08. We don’t edit platform copy; honest framing is in the title and the “what this actually is” block above.

Apply on Mercor