Specific Duties
• Reviewing, designing, developing ETL jobs to ingest data into Data Lake, load data to data marts;
• extract data to integrate with various business applications.
• Parse unstructured data, semi structured data such XML etc.
• Design and develop efficient Mapping and workflows to load data to Data Marts
• Map XML DTD schema in Python (customized table definitions)
• Write efficient queries and reports in Hive or Impala to extract data on ad hoc basis for data analysis.
• Identify the performance bottlenecks in ETL Jobs and tune their performance by enhancing or redesigning them.
• Responsible for performance tuning of ETL mappings and queries.
• import tables and all necessary lookup tables to facilitate the ETL process required to process daily XML files in addition to processing the very large (multi-terabytes) historical XML data files
