Data Scientist – Marketing / Consumer Analytics
Miejsce pracy : Lublin
Your 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
Our requirements
Minimum 5 years of experience in Data Science domain in a marketing contextStrong proficiency in SQL – ability to write complex queries, join large datasets, and prepare data for modelingProficiency in Python (libraries such as pandas, numpy, scikit-learn, statsmodels, or similar) – focus on data analysis, modeling, and result validationProven expertise in consumer data modelling and analysisGood understanding of segmentation models (clustering, scoring, customer profiling) and predictive models (propensity, churn, LTV)Experience working with large datasets and ETL processesBasic knowledge of model validation and performance metrics (AUC, lift, confusion matrix)Ability to work with business data and interpret analytical resultsAttention to code quality and reproducibility of analysesFluent Polish requiredResiding in Poland requiredWhat we offer
Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideasEmployment stability - revenue of PLN 2.1BN, no debts, since 2006 on the marketWe share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and moreComfortable workplace – class A offices or remote workDozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer applicationPLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workersInvestment in your growth – meetups, webinars, training platform and technology blog – you chooseFantastic atmosphere created by all Sii Power PeopleRecruitment stages
Send your CVTalk to us about your expectationsLearn more about our projects and choose the bestStart your adventure with Sii!Job Description
We’re looking for a Data Scientist who turns data into real business results — not just builds models. You will join a newly formed analytics team inside a leading global company in the tobacco industry, shaping how data drives consumer strategy and marketing performance. Your work will focus on predictive modeling, consumer insights, and translating analytics into actionable business decisions. If you want your models to truly ‘move the needle’, this role is for you.
Sii Sp. z o.o.
Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 500 professionals and implement projects in a variety of industries for clients from many countries around the world.
The Great Place to Work title, won 10 times in a row, proves that at Sii we create a friendly work environment.