As a machine learning engineer, you will be focusing on: Leveraging existing AI/ML infrastructure, build new platform services and be responsible for building an end to end machine learning based product solution for improving iCloud Mail experiences.Working with large volumes of data; extracting and manipulating large datasets using tools such as Spark SQL, command line and scripting languages.Collect ongoing qualitative and quantitative feedback from the user population and iterate based on the findings.Building high-performance, scalable and extensible REST based services for enhancing Mail consumer experience.Design database schemas, write queries, and optimize database performance.