Robinhood Markets is seeking a Senior Machine Learning Engineer to join their Applied Machine Learning team. The role focuses on implementing and evaluating machine learning algorithms, particularly in ranking and recommendation systems. Key responsibilities include model development, A/B testing, data analysis, cross-functional collaboration, and building reusable ML libraries. The ideal candidate will have 5+ years of applied ML experience, with a strong focus on recommendations, ranking, and personalization. They should be proficient in Python, SQL, XGboost, and PyTorch/TensorFlow, with experience in Spark, Kafka, and Kubernetes being desirable. The role offers competitive compensation, comprehensive benefits, and the opportunity to work on impactful projects in the fintech sector. Robinhood values diversity and provides equal opportunities for all applicants.