Senior Data Scientist

Senior Data Scientist Miejsce pracy: Bydgoszcz Technologies we use Expected Python SQL About the project At Huuuge Games we make top-grossing mobile games that bring people together through fun and social experiences. Become part of an exciting adventure, bringing joy to millions of players around the world from one of our offices in Poland. We are an in-office-first company and operate in a hybrid model (3 days from the office). Join our exceptional Data Science team - a group of highly skilled, curious, and driven individuals who work with leading edge tools, shape best practices, and transform data into real business impact. As a Senior Data Scientist, you'll enjoy significant autonomy, working on some of the most interesting challenges in mobile gaming - from player behavior modeling to building large-scale personalization systems. Your responsibilities Lead the design, development, and deployment of advanced data science solutions that drive measurable business impact. Build and productionize machine learning models for improving player engagement and monetization. Design methodology and develop tooling for the experimentation at scale to support data-driven decision-making. Implement and promote state-of-the-art methods in causal inference, statistical modelling and model validation. Collaborate closely with cross-functional teams (including Product, Marketing, and Engineering) to deliver end-to-end solutions. Shape technical standards and help build scalable internal tools. Ensure high-quality, maintainable, and well-documented code in a collaborative environment. Champion best practices in Data&AI across the company through professional communication, education, and innovation. Our requirements 5 years of experience in Data Science or Machine Learning, ideally in product-oriented and highly data-driven environments. Proven track record of end-to-end ownership of ML or analytics projects - from concept to production. Strong theoretical and practical knowledge in statistics, machine learning, and experimental design. Deep hands-on experience with Python (pandas, numpy, scikit-learn, TensorFlow/PyTorch, statsmodels). Proficiency in SQL and experience with PySpark or other big data tools. Familiarity with Cloud Infrastructure, ML Ops and deployment practices (for example Databricks, MLFlow, Github Actions). Ability to communicate complex insights clearly to non-technical audiences. A proactive, ownership-driven mindset and ability to thrive in a dynamic, fast-paced environment. Optional Extensive practical experience in Product Data Science, with a strong focus on experimentation methodologies, causal inference and data-driven product decision-making. Experience building scalable, production-level data science solutions using best practices from software engineering. Experience with Bayesian modeling and probabilistic programming (PyMC, TFP, NumPyro). Passion for mobile games, understanding player behavior, and modeling game economy. Benefits sharing the costs of sports activities private medical care life insurance flexible working time fruits integration events dental care no dress code video games at work coffee / tea drinks parking space for employees leisure zone redeployment package christmas gifts employee referral program Huuuge Games Sp. z o.o. At Huuuge Games we make top-grossing mobile games that bring people together through fun and social casino mobile gaming. Join our Marketing team, working closely with Monetization, Product and Brand teams to shape the organic voice of both our flagship social casino titles and the Huuuge Games brand itself. You'll create content that entertains millions of players worldwide, supports monetization goals through strong calls-to-action, and builds meaningful connections with our player community. Your role will bridge creativity and strategy - from developing engagement-driven campaigns to crafting conversion-oriented posts that drive traffic directly to the game. This is a hands-on position for someone who thrives in cross-functional collaboration, enjoys fast-paced creative work, and wants to see measurable impact from their ideas. You'll also collaborate closely with the VP of Marketing, as well as HR and Administration teams, on brand-level social media initiatives that strengthen Huuuge's corporate presence and employer brand. Become a part of an exciting adventure bringing fun & truly social experience to millions of players around the world from our office in Warsaw.