Senior Data Scientist - Predictive Analytics for Growth

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

Benefits offered by this job

Great Place to Work

Center of internal trainings

Profit sharing

MySii app

Job summary

Sii Poland is seeking an experienced Data Scientist to join a newly formed analytics team in Poznań. You will build predictive models, analyze consumer data from multiple sources, and translate analytics into actionable business decisions to move the needle in marketing performance.

Significant responsibilities include collaborating with marketing and product teams, presenting insights to non-technical stakeholders, and tracking model impact against KPIs.

Qualifications

• Minimum 5 years of experience as a Data Scientist.
• Strong SQL skills with complex queries and data prep for modeling.
• Proficiency in Python and ML libraries for analysis and validation.
• Experience with large datasets and ETL processes.
• Ability to translate analyses to business recommendations.
• Excellent English communication in 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 together 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 data analysis

ETL processes

Business data interpretation

English communication

Tools

Python libraries: pandas, numpy, scikit-learn, statsmodels

Job description

Sii Poland is seeking an experienced Data Scientist to join a newly formed analytics team in Poznań. You will build predictive models, analyze consumer data from multiple sources, and translate analytics into actionable business decisions to move the needle in marketing performance.

Significant responsibilities include collaborating with marketing and product teams, presenting insights to non-technical stakeholders, and tracking model impact against KPIs.