Senior Data Scientist and Data Engineering Experts

Mercor is working with a leading AI research lab on a project to improve how AI systems do real-world data science and data engineering work. Mercor is looking for senior data scientists and data engineers with deep experience at top technology, quantitative or financial firms, who will use that expertise to train and evaluate frontier AI models. Open to candidates based in the United States, United Kingdom, Canada, Australia or New Zealand.

Key Responsibilities

• Design realistic, challenging data science and data engineering tasks: exploratory analyses, statistical modeling, ML pipelines, ETL and data pipeline design, SQL and Python workflows, experimentation or A/B test write-ups
• Write precise, task-specific criteria that illustrate what good deliverables look like
• Apply consistent, evidence-based judgment so assessments are reproducible and defensible
• Take structured feedback from senior reviewers and iterate on submitted work

Ideal Profile

• 4+ years of professional data science, data engineering or machine learning experience at one of: a leading technology or quant firm (FAANG+, Magnificent 7+, top-tier quant funds) with a mid-senior title (Applied Scientist, Research Scientist and ML Engineer/Scientist roles also qualify); a top financial institution; a top-tier consulting firm as a data scientist; or a Fortune 100 company with a senior or manager-level title
• Experience may be split across more than one qualifying employer
• Strong command of Python, SQL, statistical modeling, machine learning, experimentation and causal inference
• Proven ability to turn messy real-world data into rigorous analyses and reliable pipelines
• Excellent written English and a bachelor's degree from an English-speaking country
• Detail-oriented, consistent and comfortable calibrating judgment against set standards

Contract and Payment Terms

• Independent contractor, fully remote, on your own schedule
• Projects can be extended, shortened or concluded early depending on needs and performance
• Payments are weekly via Stripe or Wise based on services rendered
• Mercor is unable to support H1-B or STEM OPT candidates at this time