Senior Data Scientist — Shape ML Strategy & Growth (Flexible)

Smadex; Barcelona; On-site; EUR 80,000 - 120,000; Full time

Benefits offered by this job

Great compensation package

Barcelona location in the heart of the

Work from home 2 days per week

Meal vouchers

Monthly gym allowance

LinkedIn Learning and training

Team building events

Fully stocked fridge

Job summary

Smadex, based in Barcelona, seeks a Senior Data Scientist to shape the future of its mobile advertising platform. You will transform large-scale behavioral data into scalable strategies, working at the intersection of product, engineering, and business.

You will own the analytics loop, design rigorous experiments, and establish cross-functional KPIs, mentoring teammates and driving high-impact insights across teams.

Qualifications

• 5+ years of proven experience as a Data Scientist or Product Analyst.
• Bachelor’s or Master’s degree in a highly quantitative field.
• Strong Python and SQL experience with massive datasets and cloud warehouses.
• Solid understanding of statistics, hypothesis testing, causal inference, and regression.
• Exceptional English communication, able to present to C-level executives.
• Proven ownership of projects from ambiguity to measurable outcomes.

Responsibilities

• Own the analytical loop influencing Product and ML strategies using data.
• Design and evaluate experimentation frameworks (A/B, multivariate).
• Establish KPIs and frameworks aligning cross- functional teams.
• Build reproducible data models, frameworks, and scalable processes.
• Create data visualizations to democratize insights for tech and business.
• Partner with Engineering, Product, and Business to drive decisions.

Skills

Data storytelling

Statistical reasoning

Hypothesis testing

Causal inference

Education

Bachelor’s or Master’s in Mathematics/Statistics/CS/Data Science/Economics

Tools

Python

SQL

Data visualization

Cloud data warehouses

Job description

Smadex, based in Barcelona, seeks a Senior Data Scientist to shape the future of its mobile advertising platform. You will transform large-scale behavioral data into scalable strategies, working at the intersection of product, engineering, and business.

You will own the analytics loop, design rigorous experiments, and establish cross-functional KPIs, mentoring teammates and driving high-impact insights across teams.