Code-Data Eval Author — Machine Learning Engineer (Pilot)

Code-Data Eval Author — Machine Learning Engineer (Mercor · remote contract)

Mercor partners with frontier AI labs to build the evaluations their models are trained and measured against. You'll design ML/LLM evaluation tasks and rubrics and grade model/agent outputs — your training-side knowledge directly shapes reward and eval signals.

What you'll do

• Design ML/LLM evaluation tasks, rubrics, and metrics

• Grade model/agent outputs and improve eval quality through review

• Bring training-side judgment (SFT / RLHF / reward modeling) to eval design

You are

• ~5+ years as an MLE at a real product organization with hands-on training/fine-tuning and evals

• Ideally fluent in SFT / RLHF / reward modeling / eval metrics (rare, high-leverage here)

• PyTorch/JAX, Hugging Face, experiment tracking; clear written communication

Engagement & pay

• Remote contract, flexible 30+ hrs/week

• Hourly rate set to your local market (e.g., US/Canada $100–140/hr; Europe and LatAm scaled to region)

Hiring process — paid A short Mercor Technical Screen, a live Code Review Session, and a Domain Expert Interview. You're paid $200 for completing all three, regardless of outcome.