Senior Product Data Scientist: Experimentation & Causal

Harnham; España; Presencial; EUR 90.000 - 130.000; Jornada completa

Descripción de la vacante

Harnham is seeking a Senior Product Data Scientist to drive the center of product strategy, experimentation and causal inference, influencing executive decisions with data-driven insights.

You will lead experimentation evolution, uncover non-obvious insights from complex datasets, and mentor other data scientists while collaborating with product, eng, design, finance, marketing and execs.

Formación

• 6+ years of experience in product data science, experimentation, or applied analytics.
• Deep expertise in causal inference and advanced experimentation methods.
• Strong Python or R, expert SQL, and experience with modern data warehouses.
• Proven ability to influence senior stakeholders and drive data-driven change.
• SaaS and product-focused experience strongly preferred.

Responsabilidades

• Own the experimentation roadmap across the product and drive measurement improvements.
• Design and analyze advanced A/B tests, multivariate and Bayesian experiments.
• Apply causal inference techniques (DiD, synthetic controls, PSM, IVs) when RCTs aren’t possible.
• Build KPI and measurement frameworks connecting product metrics to business outcomes.
• Translate complex statistical findings into clear, actionable narratives for senior leadership.
• Partner with Data Engineering to scale experimentation tooling and self-serve analytics.

Conocimientos

Python or R

SQL

Causal inference

A/B testing

Herramientas

Data warehouses

Descripción del empleo

Harnham is seeking a Senior Product Data Scientist to drive the center of product strategy, experimentation and causal inference, influencing executive decisions with data-driven insights.

You will lead experimentation evolution, uncover non-obvious insights from complex datasets, and mentor other data scientists while collaborating with product, eng, design, finance, marketing and execs.