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

Mercor

Machine Learning Engineer Contractor
Argentina, Austria, Belgium, Brazil, Canada, Chile, Colombia, Czech Republic, Denmark, Finland, France, Germany, Ireland, Italy, Mexico, Netherlands, Norway, Peru, Poland, Portugal, Romania, Spain, Sweden, Switzerland, United Kingdom, United States, Uruguay $45 – $140/hr June 9, 2026

Job description

About the Role

Mercor partners with frontier AI labs to build the evaluations their coding models are trained and measured against. As a eval author / ML engineer, you'll define what "correct" means for the next generation of coding models.

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

Engagement & Pay

  • Remote contract, flexible 30+ hrs/week
  • Hourly rate set to your local market: US/Canada $100–140/hr; Europe and LatAm scaled to region
  • Hiring process is paid — $200 for completing the Technical Screen, Code Review Session, and Domain Expert Interview

Contract Terms

  • Independent contractor, weekly payments via Stripe or Wise
  • Unable to support H1-B or STEM OPT candidates
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Frequently asked questions

Is Mercor legitimate?
Yes, Mercor is a legitimate company listed on RemoWork. We verify all companies on our platform. However, we always recommend doing your own research before sharing personal information or starting work. Check reviews from other users and visit the company's official website for the most up-to-date information.
How do I get started with Mercor?
To get started, visit Mercor's official website and look for their careers or sign-up page. Create an account, complete your profile with relevant skills and experience, and apply for available positions or projects. Some companies may require you to pass a qualification test or assessment before you can start working.
Does Mercor offer remote work?
Yes, Mercor offers remote work opportunities. Most tasks and positions can be completed from anywhere with a reliable internet connection and a computer or smartphone. Specific location requirements may vary by project or role, so check individual listings for details.
How does Mercor pay its workers?
Payment methods and schedules vary. Common payment options include PayPal, bank transfers, Payoneer, and other digital payment platforms. Visit Mercor's official website or check their payment/FAQ section for specific details about payment methods, minimum thresholds, and payout schedules.
What skills do I need to work with Mercor?
Required skills vary by role and project. Generally, you'll need a reliable internet connection, basic computer literacy, strong attention to detail, and good communication skills. Some positions may require specialized expertise, language proficiency, or technical qualifications. Check individual job listings for specific requirements.
What is Mercor's vetting process like?
Mercor uses an AI-powered vetting process that evaluates candidates through technical assessments, interviews, and skill verification. The platform matches vetted talent with companies looking for specific expertise. The process is designed to be efficient and identify top-tier professionals quickly.
What types of roles does Mercor offer?
Mercor connects professionals with AI engineering, software development, data science, machine learning, and other tech-focused roles. The platform works with startups and enterprises, offering both contract and full-time remote positions across various technical domains.
Is Mercor free for job seekers?
Yes, Mercor is free for job seekers and freelancers. The platform earns revenue from companies hiring through the network. Candidates can create profiles, get vetted, and apply for positions at no cost.
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