Siri’s Natural Language Understanding is powered by high quality, detailed linguistic annotations. The NL Annotation Project Lead is instrumental in coordinating annotation projects with human annotators and stakeholder data scientists & machine learning engineers.RESPONSIBILITIES INCLUDE:- Reviewing and advising the development of annotation project strategies, interfaces, and guidelines- Relaying and interpreting project guidelines and instructions for annotators- Serving as an interface for feedback and questions from annotators back to data scientists- Prioritizing and scheduling projects to align with organizational goals and timelines- Coordinating with vendors to establish long-term partnerships and ensure proper & accurate invoicing- Monitoring and managing individual annotator performance metrics (accuracy, throughput), providing feedback and guidance for improvement.