Senior Data Scientist

Senior Data Scientist - International BAU & Operations

London Hybrid Working Model

6 Months Contract + Extension

400 to 450 Inside IR35

A fast-growing, high-impact international organisation is seeking a hands-on Senior Data Scientist to take ownership of the day-to-day analytics engine and machine learning models for an established international platform across the UK and Canadian markets.

Key Responsibilities

• 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.

Essential Requirements

• 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.

London Hybrid Working Model 6 Months Contract + Extension

400 to 450 Inside IR35

If you are an experienced Data Science operator ready to take ownership of a mission-critical International BAU setup, please apply directly to this advert or submit your CV to (url removed).

Randstad Technologies is acting as an Employment Business in relation to this vacancy.