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# Senior Data Scientist - AI Expert

- **Company:** Mercor
- **Location:** London, UK (Remote available)
- **Experience:** Expert
- **Salary:** £62,781.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Information Engineering, Extract Transform Load (ETL), Python (Programming Language), Machine Learning, SQL Databases, Machine Learning Operations, Data Pipelines
- **Published:** October 30, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5946341648

## About the Role

Must-Have

 * 4+ years of professional data science, data engineering, or machine learning experience.
 * 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, including the ability to explain technical findings clearly.
 * Bachelor's degree from an English-speaking country.
 * Detail-oriented, consistent approach to evaluating complex work.

## Description

* Design realistic, challenging data science and data engineering tasks, including exploratory analyses, statistical modeling, machine learning pipelines, ETL, and data pipeline design.
 * Illustrate "what good looks like" by writing precise, task-specific criteria for data science and data engineering deliverables.
 * Apply consistent, evidence-based judgment to ensure assessments are reproducible and defensible.
 * Take structured feedback from senior reviewers and iterate on submitted work.
 * Train and evaluate frontier AI models using expertise from top technology, quantitative, or financial firms.
 * Work independently and asynchronously to improve AI model performance.