Data Scientist with ML (f/m/x)

We’re looking for an experienced Data Scientist skilled in building predictive 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 ensures that all employment-related decisions are made solely on the basis of qualifications, competencies, and performance. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promote a diverse and inclusive work environment.Your tasksBuild and optimize predictive models (e.g., churn, propensity, segmentation, CLV, recommendations)Analyze consumer and marketing data across multiple sourcesModel and optimize customer journeys using AI/ML techniquesCollaborate with marketing and product teams to define analytical prioritiesTranslate complex analytical findings into clear business recommendationsDeliver analytical outputs together with actionable usage guidance for business teamsPrepare high-quality presentations, reports and data visualizations for non-technical stakeholdersTrack model performance and measure business impact on marketing KPIs and P&LIdentify new opportunities for data-driven growth and champion data-based decision-making across the organizationRequirementsMinimum 5 years of experience as a Data ScientistStrong 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 validationExperience working with large datasets and ETL processesAbility to work with business data and interpret analytical resultsAttention to code quality and reproducibility of analysesAbility to communicate effectively in English in an international environmentNice-to-have requirementsExpertise in the marketing and consumer analytics domainGood understanding of segmentation models (clustering, scoring, customer profiling) and predictive models (propensity, churn, LTV)Basic knowledge of model validation and performance metrics (AUC, lift, confusion matrix)What 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 ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!