vani mahesh
@vanimahesh
I test GenAI and ETL data pipelines, improving data quality, coverage, and processing performance.
IndiaWhat I'm looking for
At U9 Telecom, I test end-to-end data pipelines across Bronze, Silver, and Gold layers, using SQL and PySpark to validate transformations, investigate defects, and protect data quality. I also automated ELT workflows across three enterprise pipelines with Databricks Workflows.
I've improved reported data-processing time by 40% through PySpark partitioning, caching, and broadcast joins, and implemented Great Expectations checks for schema drift, null values, and anomalies before data reached the Gold layer. My work spans Azure Data Factory, ADLS Gen2, Azure SQL DB, Delta Lake, Unity Catalog, and Databricks.
Across GM Protrac and Avis Budget Group, I built ETL test strategies, validated warehouse loads, managed defects, and improved pipeline quality. I'm now focused on AI and GenAI QA, including LLM response validation, prompt testing, AI-assisted test-case generation, synthetic data, and anomaly analysis.
Experience
Work history, roles, and key accomplishments
Data Engineer — ETL Testing & Databricks
U9 Telecom
Jan 2024 - Present (2 years 8 months)
Designed and executed end-to-end testing for data pipelines across Bronze, Silver, and Gold layers, including source-to-target, schema, completeness, null, duplicate, and transformation validation. Used SQL and PySpark to validate large datasets and investigate data-quality defects.
ETL Testing Engineer — Data Pipeline Quality
GM Protrac
Jun 2021 - Dec 2023 (2 years 6 months)
Designed and executed end-to-end ETL test strategies for pipelines loading enterprise data into a central data warehouse. Performed source-to-target validation covering row counts, column mappings, transformation logic, NULL handling, and data-type conversions.
ETL Testing Engineer
Avis Budget Group
Mar 2016 - Feb 2018 (1 year 11 months)
Executed ETL testing for data-ingestion workflows between OCR systems, source databases, and downstream data stores, validating accuracy and completeness end to end. Performed CWAS business-data validations and identified missing or invalid records to support client SLA requirements.
Education
Degrees, certifications, and relevant coursework
Databricks
Databricks Certified Data Engineer Associate, Data Engineering
Databricks Certified Data Engineer Associate certification in progress, expected completion in 2026.
Rajeev Gandhi Memorial College of Engineering, JNTU University
Bachelor of Technology, Electronics & Communication Engineering
2011 - 2015
Bachelor of Technology in Electronics & Communication Engineering from Rajeev Gandhi Memorial College of Engineering, JNTU University, 2011-2015.
Tech stack
Software and tools used professionally
Availability
Location
IndiaAuthorized to work in
Salary expectations
Social media
Job categories
Skills
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