Senior Data Scientist: Predictive ML for Growth

Sii Sp. z o.o.; Lublin; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Private healthcare

Profit sharing

Remote or hybrid work

Growth & training opportunities

Class A offices

Job summary

Sii Sp. z o.o. is hiring a Data Scientist with ML in Lublin to build predictive models and analyze consumer data across multiple sources. You will collaborate with marketing and product teams to translate analytics into actionable business decisions and present insights to non-technical stakeholders.

The role requires at least 5 years of experience in data science, strong SQL and Python skills, and experience with ETL processes, with English communication in an international context.

Qualifications

• 5+ years of experience as a Data Scientist.
• Strong proficiency in SQL and ability to write complex queries.
• Proficient in Python with data analysis and modeling libraries.
• Experience with large datasets and ETL processes.
• Ability to communicate in English in an international environment.
• Attention to code quality and reproducibility.

Responsibilities

• Build and optimize predictive models (e.g., churn, segmentation, CLV).
• Analyze consumer and marketing data across multiple sources.
• Model 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

ETL

Data analysis

English communication

Tools

Pandas

NumPy

Scikit-learn

Statsmodels

Job description

Sii Sp. z o.o. is hiring a Data Scientist with ML in Lublin to build predictive models and analyze consumer data across multiple sources. You will collaborate with marketing and product teams to translate analytics into actionable business decisions and present insights to non-technical stakeholders.

The role requires at least 5 years of experience in data science, strong SQL and Python skills, and experience with ETL processes, with English communication in an international context.