As Roof Stacks, we have been carrying out innovative projects since 2015. We aim to become a global actor in Tourism Systems, Extended Reality(AR/VR), Blockchain Technologies, Game Development, and Financial Technology, which are our areas of expertise. We focus on creating a difference with the technologies we develop and designing the future. In addition to our central office in Ataşehir/İstanbul, we have branches in Antalya and Elazığ in Turkey. We have strengthened our position in the global market by opening a new office in Austin, USA, which hosts world technology giants from all over the world. We are looking for an experienced Senior Data Scientist to join the RoofStream team. Responsibilities:-Develop and improve recommendation systems and customer segmentation models.-Work on ML/AI-based initiatives to derive new insights and build advanced features.-Contribute to data-driven product development and personalization strategies.-Collaborate with cross-functional teams to solve business challenges using predictive modeling and machine learning.Requirements:-At least 5+ years of experience in Data Science or a similar role.-Strong Python skills: Experience with Pandas, NumPy, Scikit-learn, TensorFlow, or PyTorch.-Advanced knowledge of SQL for data extraction and analysis.-Experience with Recommendation Systems: Collaborative Filtering, Content-based Filtering, etc.-Knowledge of Clustering Algorithms: K-Means, DBSCAN, Hierarchical Clustering.-Experience with cloud platforms: GCP (BigQuery, Vertex AI) or AWS (SageMaker) -Strong knowledge of data cleaning and feature engineering.-Strong problem-solving and analytical thinking skills.Preferred Qualifications:-Proactive, team-oriented, and quick learner.-Experience with Time Series Analysis and Forecasting (nice to have).-Knowledge of A/B Testing and statistical methods.-Experience with large-scale data processing: Spark, Hadoop.-Familiarity with OTT platforms and media data.-MLOps knowledge: CI/CD pipelines and model serving.