Senior Data Scientist

November 6, 2026

Senior

Barcelona, Spain

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English is required

Description

We are looking for a Senior Data Scientist to join the Data Science team of an international technology company. The role focuses on designing advanced analytical solutions and applying statistical modelling, experimentation and causal inference to complex business challenges. The scientist will analyse large datasets, design experiments and collaborate with Product, Data Engineering and ML Engineering teams. Findings and recommendations are communicated to technical and non-technical stakeholders.

Responsibilities

Design and develop advanced analytical solutions to address complex business challenges
Apply statistical modelling, experimentation and causal inference techniques
Analyse large and complex datasets to identify patterns, trends and measurable business impact
Design and evaluate experiments to understand the effectiveness of different business strategies and initiatives
Select appropriate analytical methodologies, balancing technical complexity, reliability and scalability
Collaborate with Product, Data Engineering and ML Engineering teams to integrate analytical solutions into products
Communicate analytical findings and recommendations to technical and non-technical stakeholders
Contribute to technical discussions and knowledge sharing within the Data Science team

Requirements

4+ years of experience in Data Science, Advanced Analytics or a related quantitative discipline
Strong knowledge of statistics, experimentation and analytical modelling
Hands-on experience with A/B testing and experimental design
Knowledge of causal inference methodologies, such as Difference-in-Differences, Synthetic Control, Propensity Score Matching or Uplift Modelling
Strong programming skills in Python and SQL
Experience working with large datasets and complex data environments
Ability to translate analytical findings into actionable business recommendations
Strong communication and stakeholder management skills
Fluent in English and Spanish