Data Scientist in London - Harnham - Data & Analytics Recruitment

Sector: eCommerce
Contract Length: 3 months
IR35 Status: Inside IR35
Day Rate: £650-£700 per day
Location: Hybrid - 2 days per week onsite

We are supporting a leading eCommerce business in the search for a Senior Experimentation Data Scientist to deliver high-impact experimentation across logistics and operational initiatives. This role is explicitly not product-focused and will centre on experimentation relating to promotions, operational efficiency, and logistics performance.

This is a fast-moving engagement with tight timelines, requiring someone who can hit the ground running and operate autonomously within a squad-based delivery model.

• Design and execute experimentation frameworks focused on logistics and operational use cases

• Lead A/B testing and controlled experiments to evaluate promotional and operational changes

• Ensure analytical robustness through sense-checking data, assumptions, and outputs

• Work closely with engineers, analysts, and operational stakeholders within a squad environment

• Translate experimental outcomes into clear, actionable recommendations for the business

• Operate independently while maintaining strong collaboration across technical teams

Essential

• Advanced SQL (including joins, validation logic, and data interrogation)

• Strong Python for analysis and experimentation workflows

• Experience working with Google BigQuery or comparable cloud data platforms

Experimentation Expertise

• Proven experience designing and building experimentation frameworks

• Strong grounding in experimental design, statistical validity, and bias mitigation

• Confident explaining experimental approaches verbally, not just via documentation

• Senior-level experimentation data scientist with strong commercial awareness

• Comfortable working at pace in short, delivery-focused contracts

• Able to work independently with minimal oversight

• Confident partnering with highly technical teams

• Well-prepared, pragmatic, and delivery-oriented

• Comfortable operating within tight timelines and changing priorities