Ashok Rajendran

Software Engineer

Best Buy India•  April 2025 - Present•  Bangalore

Analyzed SAP reports and traced data lineage across medallion architecture (gold, silver, bronze) to source RDBMS. Reconstructed data flows from Teradata/Informatica into Google Cloud using BigQuery, enabling new reporting in Looker Studio Pro.

Senior Software Engineer

Carelon Global Solutions•  December 2022 - March 2025•  Bangalore

Built scalable data models and pipelines using Python, SQL, AWS, and GCP to process billions of claims. Engineered ETL for $250M daily claim monitoring via Airflow. Led PHI/PII-safe design reviews, client presentations, and lifecycle management with deep expertise in query optimization, migration, and secure data handling.

Software Engineer

Legato Health Technologies•  January 2021 - November 2022•  Bangalore

Automated HBase audits to detect missing Hadoop & Snowflake loads across 1,000+ tables. Built AWS Glue jobs for daily S3 transfers. Led defect-free deployments via Bitbucket. Optimized Snowflake SQL with TDD. Mentored associates and trained teams on Big Data, Hadoop, Bitbucket, and AEDL.

Software Engineer

Accenture Inc.•  June 2019 - December 2020•  Bangalore

Optimized Hive partition deletion tool, reducing execution time 30x. Built PySpark automation to convert 1,800+ Streamsets pipelines to Spark. Enhanced RDBMS-to-Hadoop ingestion using Shell, PySpark, Sqoop, Hive, and HBase. Led support for 8+ teams on the Streamsets-to-Accelerator Converter framework.

Associate Software Engineer

Accenture Inc.•  September 2017 - May 2019•  Bangalore

Automated partition cleanup for 1,800+ tables. Designed 100+ Streamsets pipelines for RDBMS-to-Hadoop ETL. Built auditing for 1,600+ pipelines, saving two days with logging and alert automation.