Data Scientist – Experimentation Framework
Harnham
- London, England, United Kingdom
- London, England, United Kingdom
About
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.
Key Responsibilities
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
Technical Requirements
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
Ideal Contractor Profile
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
Desired Skills and Experience Skills
Advanced SQL (joins, validation, optimisation)
Python for Data Analysis
Google BigQuery
Statistical Analysis & Inference
Data Quality & Sense Checking
Operational & Logistics Analytics
Stakeholder Management
Agile / Squad-Based Delivery
Experience
Senior-level experimentation data scientist within eCommerce or operational environments
Designing and building experimentation frameworks end to end
Delivering logistics or operations-focused experiments (non-product)
Working independently on short, high-impact contracts
Partnering with highly technical teams under tight timelines
How to Apply If you have experience building experimentation frameworks and thrive in dynamic, high-visibility roles, we’d love to hear from you.
Apply now by sending your CV and availability to Atif Ahmad.
Seniority level Mid-Senior level
Employment type Contract
Job function Analyst
Industries Internet Marketplace Platforms
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Languages
- English
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