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December 17, 2025

Data Scientist

Senior • Remote

Warsaw, Poland

Our team is delivering business solutions with Machine Learning and Data Science often turning them into scalable platforms including non-trivial and innovative solutions in the space of Forecasting and Customer Analytics often leveraging cutting-edge Causality frameworks. This role requires close collaboration with business stakeholders, and the ability to understand their problems and translate them into machine learning ones.


Tasks:

  • Running end-to-end initiatives (Business understanding, Data understanding/preparation, Modeling, Evaluation and Deployment) 

  • Analyzing and interpreting the findings 

  • Drawing conclusions and recommendations- including expected benefits and measuring ROI for enhancing business processes  

  • Pre-sales activities (at senior consultant level) 

 

Requirements:

Role Specific - essential: 

  • commercial experience with various classical data science and Machine Learning (ML) models (e.g. decision trees, ensemble-based tree models, linear regression etc.) 

  • familiarity with customer analytics DS concepts or advanced forecasting 

  • model hyperparameter tuning 

  • model validation frameworks   

  • experience with business requirements gathering, transforming them into technical plan, data processing, feature engineering, models evaluation 

  • previous experience in an analytical role supporting business will be a plus 

  • fluency in Python, basic working knowledge of SQL 

  • knowledge of specific DS/ML libraries 

  • solid experience in one of the cloud computing platforms (Databricks or GCP or Azure)  

Role Specific – nice to have: 

  • understanding of Causal machine learning 

  • experience in working with big data and distributed environments would be a plus 

  • commercial experience proven by multiple successful projects in the areas of forecasting would be a big plus 

  • Experience with OOP in Python 

  • Experience with MLOps 

  • familiarity with other languages R, Scala would be a plus 

General: 

  • basic computer programming skills and familiarity with programming concepts  

  • strong business acumen 

  • experience with deep learning, reinforcement learning or other advanced modeling concepts in classical Data Science problems 


We offer:

  • Stable employment. On the market since 2008, 1500+ talents currently on board in 7 global sites.

  • Workation. Enjoy working from inspiring locations in line with our workation policy. 

  • Great Place to Work® certified employer.

  • Flexibility regarding working hours and your preferred form of contract.  

  • Comprehensive online onboarding program with a “Buddy” from day 1.   

  • Cooperation with top-tier engineers and experts.  

  • Unlimited access to the Udemy learning platform from day 1.

  • Certificate training programs. Lingarians earn 500+ technology certificates yearly. 

  • Upskilling support. Capability development programs, Competency Centers, knowledge sharing sessions, community webinars, 110+ training opportunities yearly.

  • Grow as we grow as a company. 76% of our managers are internal promotions.  

  • A diverse, inclusive, and values-driven community.   

  • Autonomy to choose the way you work. We trust your ideas.  

  • Create our community together. Refer your friends to receive bonuses.  

  • Activities to support your well-being and health.

  • Social fund benefits for everyone. All Lingarians can apply for social fund benefits, such as vacation co-financing. 

  • Plenty of opportunities to donate to charities and support the environment.  

  • Modern office equipment. Purchased for you or available to borrow, depending on your location.