ML Challenge Task Auditor

Cashback24x7; Indiana; Hybrid; USD 96,000 - 124,000; Part time

Job summary

Mercor offers an hourly contract for an experienced ML engineer to work remotely in the United States. The role focuses on applied/experimental ML with weekly payments via Stripe or Wise. You will design experiments and evaluate models while maintaining strict data-quality standards.

Applications are evaluated on evidence-based ML practice. This independent contractor position emphasizes rigorous methodology and reproducibility, with flexible scheduling and project-based scope.

Qualifications

• 3+ years hands-on applied/experimental ML.
• Strong data-quality rigor including leakage detection and train/test/CV hygiene.
• Proficiency with standard ML frameworks (PyTorch, TensorFlow, scikit-learn, XGBoost)

Skills

Applied/experimental ML

Data-quality rigor

Model evaluation and critique

Tools

PyTorch

TensorFlow

Scikit-learn

XGBoost

Job description

Company: Mercor

Compensation: $70-$90 per hour

Commitment: Hourly contract

Location: Remote — United States

Referral Reward: Earn up to $1,440 per successful referral.

Referral Link: https://t.mercor.com/vAF9oLocation requirements United States

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. We consider all qualified applicants without regard to legally protected characteristics and provide reasonable accommodations upon request.

Contract and Payment Terms

You will be engaged as an independent contractor. This is a fully remote role that can be completed on your own schedule. Projects can be extended, shortened, or concluded early depending on needs and performance. Your work at Mercor will not involve access to confidential or proprietary information from any employer, client, or institution.

Payments are weekly on Stripe or Wise based on services rendered.

We are unable to support H1-B or STEM OPT candidates at this time.

About Mercor

Mercor partners with leading AI labs and enterprises to train frontier models using human expertise. You will work on projects that focus on training and enhancing AI systems. You will be paid competitively, collaborate with leading researchers, and help shape the next generation of AI systems in your area of expertise.