Roles and Responsibilities:- Designing ML systems. Researching and implementing ML algorithms and tools. Selecting appropriate data sets. Picking appropriate data representation methods. Identifying differences in data distribution that affects model performance. Verifying data quality and performing data cleaning Transforming and converting data science prototypes. Performing statistical analysis. Running machine learning tests and using results to improve models. Training and retraining systems when needed. Extending machine learning libraries. Developing machine learning apps according to client requirements.