Badrinath Mulapaku

Highly motivated and results-oriented Data Engineer with 4 years of experience in designing, developing, and supporting scalable data pipelines using Azure Data Factory (ADF), Azure Databricks, PySpark, ADLS Gen2, Delta Lake, and Azure SQL Database. Experienced in building end-to-end ETL/ELT solutions, implementing Medallion Architecture (Bronze, Silver, Gold), optimizing Spark jobs, and delivering reliable data for business reporting. Strong knowledge of SQL, Python, data warehousing concepts, and production support.

Azure Data Engineer at Exner Technologies (2023-01 – Present)

Azure Data Engineer at Infosys (2023-01 – Present)

Developed an end-to-end Azure Data Engineering solution to ingest, validate, transform, and load insurance policy, claims, customer, and premium data into Azure SQL Database for reporting and analytics using Azure Data Factory, Azure Databricks, and Delta Lake.

• Designed and developed Azure Data Factory pipelines for automated data ingestion.
• Created Linked Services, Datasets, Parameterized Pipelines, and reusable pipeline components.
• Configured Schedule and Event-based Triggers.
• Loaded raw data into ADLS Gen2 Bronze layer.
• Developed Azure Databricks notebooks using PySpark for data cleansing and transformation.
• Implemented Medallion Architecture (Bronze, Silver, Gold).
• Removed duplicate records and handled null values.
• Performed joins, aggregations, filtering, and business rule implementation using PySpark.
• Implemented incremental loading using watermark logic.
• Stored transformed data in Delta Lake tables.
• Loaded Gold layer data into Azure SQL Database for reporting.
• Created audit logging and maintained execution status using stored procedures.
• Optimized Spark jobs using partitioning, caching, and Delta optimization.
• Used Azure Key Vault to securely manage credentials.
• Monitored ADF pipelines and resolved production issues.
• Collaborated with business analysts, QA teams, and stakeholders during development and deployment.

Manual Testing Internship (2022-08 – 2023-01)

Tested an e-commerce web application for user registration, login, product search, cart, checkout, and order placement.

• Prepared and executed manual test cases based on business requirements.
• Performed Functional, Smoke, Sanity, and Regression testing.
• Logged and tracked defects using Jira and verified bug fixes through retesting.
• Worked closely with the development team to ensure application quality

Bachelor of Technology (B.Tech) in Computer science and engineering – Mekapati Rajamohan Reddy Institute of Technology and Science (JNTU Anantapur) (2019 – 2023)