Staff Data Scientist, Experimentation
Core
Lead the evolution of Wallapop's experimentation practice to drive evidence-based product decisions across the marketplace.
Role type
Staff Data Scientist, Experimentation Lead
Builds
Experimentation frameworks, statistical methodologies, and tooling for product teams
Domain
Marketplace, E-commerce, Consumer Internet
Deliverable
production ML models | product features | dashboards & analysis
Required skills
Experimental design, Statistical inference, A/B testing, Variance reduction techniques (CUPED, sequential testing), SQL, Python or R, Product partnership, Stakeholder influence, Coaching/mentoring
Preferred skills
Amplitude experience, Marketplace/e-commerce background, Recommendation systems, Search systems
Responsibilities
Define experimentation vision and roadmap, Establish company-wide standards and guardrail metrics, Coach Data Analysts and PMs on hypothesis development, Build experimentation curriculum and training programs, Partner on infrastructure and tooling evolution, Design experiments for search, personalization, and monetization
Seniority
Staff, hands-on IC with strategic scope
