Rishav Majumdar Email & Phone Number

Bangalore Urban, Karnataka, India

* Developed high-performance, robust ETL / ELT data pipelines to migrate over 500 million rows of historical data, ensuring data integrity and consistency throughout the process. * Automated manual data operations using Python (Pandas, Great Expectations, PySpark) and SQL, achieving a 70% improvement in operational efficiency and significantly reducing error rates.* Designed and maintained scalable data integration processes with AWS Redshift and Google BigQuery, enabling on-demand business report generation with real-time delivery to clients.* Leveraged Apache Spark to process large retail datasets for ad hoc migration activities for various customers. * Implemented Data Models using Kimball Dimensional Modelling techniques for various data use cases.* Implemented rigorous data quality checks with Great Expectations python library, ensuring that data met predefined standards before integration, leading to enhanced accuracy and reliability of migrated data.

Ahmedabad, Gujarat, India

* Developed data pipelines using Python, Google BigQuery, GCP and Airflow to aggregate and transform data from multiple sources, enabling the creation of management dashboards for strategic decision-making. * Generated periodic performance reports using Excel, Google Sheets, and Microsoft SQL Server, delivering key insights into company and departmental performance.* Conducted Exploratory Data Analysis on raw unstructured datasets for various downstream uses, built reports on statistical metrics (variance, standard deviation, central tendency measures) to measure data quality. * Collaborated with Customer Success and Analytics teams to develop data-driven solutions, enhancing the quality and depth of insights available for critical business decisions.

Remote

- Data Cleaning and Preprocessing: Focused on cleaning and preprocessing financial and healthcare data scraped by web crawlers, ensuring high data quality. - Data Validation and Analysis: Supported engineering teams by validating and analyzing datasets, contributing to accurate and reliable data processing.

Bachelor Of Science - Bs, Economics

High School Diploma, Science, A

Activities and Societies: Music Club, Nature Club