Senior Data Scientist: Predictive Modeling & Growth

Sii Poland; Kraków; On-site; PLN 150,000 - 210,000; Full time

Benefits offered by this job

Great Place to Work

Profit sharing

Medical care

Internal trainings

Job summary

Sii Poland seeks an experienced Data Scientist to join a newly formed analytics team in Kraków. You will build predictive models, analyze marketing data, and translate insights into actionable business decisions to influence consumer strategy.

Responsibilities include collaborating with marketing and product teams, delivering clear visualizations, and tracking model performance against KPIs. English proficiency is required in this international role.

Qualifications

• Minimum 5 years of experience as a Data Scientist.
• Strong proficiency in SQL and ability to write complex queries for modeling.
• Proficiency in Python (pandas, numpy, scikit-learn) for data analysis and validation.
• Experience with large datasets and ETL processes.
• Excellent English communication in an international environment.

Responsibilities

• Build and optimize predictive models (e.g., churn, CLV, segmentation).
• Analyze consumer and marketing data across multiple sources.
• Translate analytical findings into actionable business recommendations.
• Collaborate with marketing and product teams to set analytical priorities.
• Deliver outputs with usage guidance for business teams.

Skills

SQL

Python data analysis

ETL processes

English communication

Job description

Sii Poland seeks an experienced Data Scientist to join a newly formed analytics team in Kraków. You will build predictive models, analyze marketing data, and translate insights into actionable business decisions to influence consumer strategy.

Responsibilities include collaborating with marketing and product teams, delivering clear visualizations, and tracking model performance against KPIs. English proficiency is required in this international role.