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# Senior Data Scientist

- **Company:** Randstad UK
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £104,000.0 - £117,000.0
- **Contract:** Temporary contract
- **Skills:** Airflow, BigQuery, Cloud Computing, Data Mining, Cursor (Graphical User Interface Elements), Software Debugging, Python (Programming Language), Machine Learning, Sql Optimization, Looker Analytics
- **Published:** September 25, 2026
- **Apply:** https://www.reed.co.uk/jobs/senior-data-scientist/57392550

## About the Role

* 5+ Years Experience: Hands-on Data Science & Analytics within B2C, FinTech, Consumer Tech, or E-Commerce.
 * Core Stack: Advanced SQL & Python (or R) to maintain existing codebases and pipelines.
 * Production ML: Proven expertise in retraining, monitoring, and debugging live ML models.
 * BAU Operator: High autonomy to own daily operations and deliver under tight deadlines.
 * Cloud & BI Stack: Practical exposure to GCP (BigQuery), Airflow, or Looker.
 * AI Tooling: Familiarity with Claude Code, OpenAI, Cursor, or agentic workflows to accelerate delivery.
 * Compliance & Domain: Prior experience with FCA reporting, DSARs, or time-sensitive regulatory data pulls.

## Description

* Maintain, retrain, and troubleshoot existing live ML models (credit, recommendation, and ranking logic). Monitor model health and drift, ensuring operational stability without needing to rebuild underlying architectures.
 * Monitor the UK/CA revenue baseline, investigate sudden anomalies, and triage operational gaps across partner feeds, email campaigns, and retargeting systems.
 * Oversee live tests, analyze performance reads, and make confident promotion and rollout decisions for marketing and product initiatives.
 * Rapidly triage pipeline breaks, tracking gaps, and partner feed issues to maintain data integrity across the International ecosystem.
 * Handle time-sensitive data extraction requests-including FCA regulatory returns, DSARs (Data Subject Access Requests), Right to Be Forgotten (RTBF) pulls, and complaint data-frequently under same-day or next-morning deadlines.
 * Serve as the central data owner partnering directly with Product, Marketing, Engineering, Business Development, Compliance, and Member Support teams.


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