Senior Machine Learning Researcher

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RTB House is seeking a Senior ML Researcher with 4+ years experience in Machine Learning/Data Science. Responsibilities include designing and implementing deep neural network models to predict user behavior, analyzing ML research, conducting A/B tests, and developing new modeling approaches such as bidding in first-price auctions. Required skills: proficiency in Python, Java, Scala, PyTorch, NumPy, Pandas, Jupyter Notebooks, knowledge of statistics and probability, and C1 level Polish. Benefits include flexible remote work, access to latest technologies, B2B or Contract of Mandate cooperation, and opportunities to publish results. Location options include fully remote or offices in Warsaw or Cracow.