Senior Data Scientist - Scientifique des données principal(e) (niveau senior)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Data Scientist - Scientifique des données principal(e) (niveau senior) based in Canada. This role focuses on transforming large-scale tabular and user-behavior datasets into reliable, production-ready inputs for machine learning systems. You will work at the intersection of data science, product, and engineering, helping teams translate business and technical goals into actionable data requirements. Your expertise will guide how datasets are curated, filtered, structured, validated, and prepared for model training. You will collaborate closely with ML engineers, Product teams, and Technical Program Managers in a fast-paced technology environment. The role combines hands-on technical work with cross-functional leadership and strong attention to data quality. Your contributions will help enable robust, scalable machine learning solutions and improve the quality of data-driven products.