Having 3+ years of experience as Big DataDeveloper• Utilized technical knowledge in Py Spark to solveday-to-day tasks.• Created data frames from different file formatssuch as TXT, CSV, JSON, and XML, and create Deltatables.• Implemented transformations in Py Spark/SparkSQL for ETL processes.• Apply various transformations such as aggregationand analytical transformations to process data.• Develop Python functions/UDFs/Spark SQLUDFs to enhance the performance of the Py Sparkapplication.• Scheduled jobs and workflows to deploy notebooksand monitor jobs.• Optimized code performance using variousoptimization techniques.• Written and stored processed data in various fileformats as per requirements