Data Scientist

Kempuri; Województwo pomorskie; On-site; PLN 120,000 - 220,000; Full time

Benefits offered by this job

Remote work flexibility

Competitive salary

Professional development

Job summary

Kempuri is seeking a Data Scientist to advance ML models across the full lifecycle, from ideation to production, in collaboration with data engineers, analysts, and architects. You will translate business needs into quantitative analyses and drive measurable outcomes.

The role emphasizes delivering actionable insights, publishing robust analyses, and guiding decision-making with model results. A flexible work approach and ongoing learning are offered.

Qualifications

• 3+ years in Data Science/ML.
• Substantive ML concepts knowledge.
• Experience with tree-based, GLM, distance-based, and unsupervised models.
• Gathering business requirements and translating into analytical processes.
• Knowledge of feature engineering and data leakage prevention.

Responsibilities

• Develop ML models across the full lifecycle from PoC to production.
• Translate model outputs into business decisions for end users.
• Interpret model results and monitor performance.
• Consult on analytical use cases and impact on processes.
• Estimate ROI and uplift from ML use cases.

Skills

Python

ML concepts

Feature engineering

Business requirements

Model evaluation

Communication

Ensemble learning

Lifecycle thinking

Tools

Azure ML

Vertex AI

SageMaker

Pandas

Scikit-learn

XGBoost

LightGBM

Keras

Seaborn

Statsmodels

Job description

The Kempuri Data Science team focuses on transforming the largest organizations on the market using machine learning and advanced analytics. Projects involve building predictive and prescriptive engines (Causal ML), as well as automation using GenAI. Example projects include: risk modeling, propensity/uplift analysis, churn forecasting, and demand forecasting. We are looking for individuals who have strong Python programming skills and the ability to communicate business conclusions, identify business needs, and then translate them into quantitative language. Projects are carried out in teams of 3 to 10 people with various competencies: Data Scientist, Data Engineer, Business Analyst, and Architect. Work is usually done in iterations that allow for quick and effective assessment of work results and their impact on the business process. Results are either integrated with dedicated applications or incorporated into data orchestration.

Requirements

• Minimum 3 years of experience in Data Science / ML.
• Substantive knowledge of Machine Learning concepts.
• Commercial experience in building ML solutions using tree-based models (DT, RF, Boosting), generalized linear models (SVM, NN, Regressions, Boosting), distance-based models (KNN), and unsupervised learning.
• Experience in gathering business requirements, translating them into an analytical process, defining quality metrics, and testing processes on both historical and new data.
• Knowledge of basic and advanced Feature Engineering concepts, data leakage prevention, and ensemble learning.
• Python programming skills and experience in building operational ML pipelines in selected environment: Azure Machine Learning / VertexAI / Sagemaker or similar
• Knowledge of DS/ML analytical libraries: Pandas, Scikit-learn, XGBoost / LightGBM, Seaborn, Statsmodels, Keras.

Responsibilities

• Working on comprehensive implementations of models and analyses using ML across the full life cycle: Evangelization, Use Case Hunting, PoC, MVP, Productionization, Industrialization, Maintenance.
• Defining the analytical paradigm: how to translate model output into business decisions. Contributing not only to modelling but also to results consumption by business/end users.
• Analysis and interpretation of model results, goodness of fit, and monitoring.
• Consulting on analytical use cases and their business impact.
• Preparing conclusions and simulations regarding the impact of ML use cases on business processes: estimating ROI, Uplift, and Success Criteria.

Our offer

• Competitive salary package (salary range provided during later recruitment stages).
• Remote work flexibility.
• Comprehensive benefits package.
• Opportunities for professional development and advancement.
• Access to the latest technologies and tools.
• Support for continued learning and certification.
• Collaborative and knowledge-sharing work culture.