Seeking a Data Scientist to transition marketing decisions from classic ROAS to predicted ROAS.Focus on building and developing a predictive LTV system for traffic acquisition, channel scaling, and budget planning.Requirements:3+ years of experience in Data Science or analytics with predictive models.Strong proficiency in Python (pandas, scikit-learn, LightGBM) and SQL.Fundamental knowledge in statistics and ML: model validation, quality metrics selection, uncertainty assessment.Experience in deploying models: reproducibility, versioning, retraining, and monitoring.Ability to translate models into decision-making tools and explain results to non-technical stakeholders.Bonus: Experience with subscription and payment data, incrementality experiments, BigQuery, and dbt.Benefits:Real ownership of models that directly influence marketing budget investments.Focused role on model quality and development without distractions from technical setups or BI reporting.Direct visibility of impact from work results.Remote-first work environment with optional office presence in Warsaw and Kyiv.18 days off per year and 3 fully paid sick leave days, plus unlimited sick leave with 70% compensation.Regular performance reviews for transparent development and recognition of results.Full support for Ukrainian FOP.

Senior Data Analyst / Scientist (Remote-First)

Emma

Responsibilities

Skills wanted:

Language(s) required:

Alina Bondarenko

Alina Bondarenko

About Zeely Inc.:

zeely.ai/

Admin access needed