Naveen Kumar Vanaraj
Chennai
Summary
Accomplished Senior Data Professional with 10 years of expertise in SQL development, data analysis, and end-to-end testing. At Comcast, I lead cross-functional initiatives to enhance data quality and optimize testing frameworks. I specialize in bridging the gap between data development and quality engineering, utilizing SAFe Agile to deliver high-performance, scalable solutions that meet evolving business goals.
Overview
10
10
years of professional experience
Work History
Senior Data Test Engineer
Comcast
12.2022 - Current
- Hybrid Technical Delivery: Functioned as a versatile analyst, developer, and QA lead to bridge delivery gaps, streamlining the end-to-end development of data warehouses and BI reporting for UK customer data.
- Cloud Migration: Engineered the end-to-end validation strategy for migrating complex on-premise datasets to GCP Big Query, ensuring seamless data transition, architectural integrity, and optimized query performance.
- ETL & Pipeline Integrity: Collaborated on complex ETL workflows, maintaining rigorous data integrity, and pipeline stability across large-scale migration projects.
- Performance Engineering: Optimized SQL scripts and implemented performance tuning that resulted in significant annual savings in processing and storage costs.
- Stakeholder & Agile Leadership: Partnered with stakeholders to architect data requirements and test scenarios, while driving delivery through active participation in Agile/Scrum ceremonies.
ETL/MDM Test - Pearson
Cognizant
Chennai
09.2015 - 12.2022
- Test Design: Architect the full spectrum of E2E test cases and automation scenarios, ensuring rigorous validation of data consistency, system integration, and core business logic.
- Data Engineering & MDM: Expertly validate complex MDM concepts (Match/Merge, Survivorship, Lifecycle), and DW consistency using advanced SQL queries to ensure data integrity across various stages.
- Strategic Collaboration: Lead defect triage and requirement-gap discussions with stakeholders, BAs, and developers to ensure alignment and rapid resolution of production deficiencies.
- Quality Governance: Enforce testing policies and standards while maintaining transparent communication through weekly status reports, quality metrics, and deployment tracking.
- End-to-End Ownership: Act as the primary point of contact for cross-functional and offshore teams, managing the full testing lifecycle—from business requirement analysis, effort estimation, to final UAT support, and release sign-off.
Education
Bachelor of engineering - Electrical and Electronics
MEPCO Schlenk Engineering College
Sivakasi04-2015
Skills
- SQL
- GCP BigQuery
- ETL/DW testing
- UNIX
- Oracle MDM
- E2E testing
Functional Skills
Safe Agile, Test & Defect Management, Test Strategizing and Planning, Test Design Techniques, Testing Execution Techniques, Testing Process and Metrics, Data Profiling and Analysis
Timeline
Senior Data Test Engineer
Comcast
12.2022 - Current
ETL/MDM Test - Pearson
Cognizant
09.2015 - 12.2022
Bachelor of engineering - Electrical and Electronics
MEPCO Schlenk Engineering College