Senior Data Scientist — Predictive Modeling & Growth

Sii Poland; Białystok; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Great Place to Work

Medical care

Profit sharing

Centre of internal trainings

Open management team

Job summary

Sii Poland is seeking an experienced Data Scientist to join a newly formed analytics team. The role focuses on predictive modeling, consumer insights, and translating analytics into actionable business decisions within a global tobacco industry context.

You will build predictive models, analyze data from multiple sources, and collaborate with marketing and product teams to set analytical priorities. Fluency in English and strong technical skills are essential.

Qualifications

• Minimum 5 years of experience as a Data Scientist.
• Strong proficiency in SQL – ability to write complex queries and prep data for modeling.
• Proficiency in Python (pandas, numpy, scikit-learn, statsmodels or similar) – data analysis, modeling and validation.
• Experience with large datasets and ETL processes.
• Ability to work with business data and interpret analytical results.
• Attention to code quality and reproducibility of analyses.
• Ability to communicate effectively in English in an international environment.

Responsibilities

• Build and optimize predictive models (e.g., churn, propensity, segmentation, CLV, recommendations).
• Analyze consumer and marketing data across multiple sources.
• Model and optimize customer journeys using AI/ML techniques.
• Collaborate with marketing and product teams to define analytical priorities.
• Translate complex analytical findings into clear business recommendations.
• Deliver analytical outputs with actionable usage guidance for business teams.
• Prepare high-quality presentations, reports and data visualizations for non-technical stakeholders.
• Track model performance and measure business impact on marketing KPIs and P&L.
• Identify new opportunities for data-driven growth and champion data-based decision-making across the organization.

Skills

SQL

Python

ETL

English communication

Data analysis

Modeling

Tools

Pandas

NumPy

Job description

Sii Poland is seeking an experienced Data Scientist to join a newly formed analytics team. The role focuses on predictive modeling, consumer insights, and translating analytics into actionable business decisions within a global tobacco industry context.

You will build predictive models, analyze data from multiple sources, and collaborate with marketing and product teams to set analytical priorities. Fluency in English and strong technical skills are essential.