NARAYANA EMPHASIS2024
ETL Tester
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Skills & Expertise (18)
Work Experience
ETL Tester
Entosa IT Research & Development
Aug 2025 - Mar 2026
Worked on ETL testing projects for various clients.
ETL Tester
CloudsBing Advisory Services
Mar 2025 - Jul 2025
Worked on ETL testing projects for various clients.
ETL Tester
Emphasis Limited
Oct 2021 - Jun 2024
Analyzed business requirements and mapping documents to understand how data should move through ETL workflows and applied this knowledge in testing. Prepared detailed test scenarios and test cases that covered different data movement and transformation situations to ensure complete validation. Performed schema validation by reviewing table structures, column definitions, and data types to maintain accuracy and completeness. Wrote and executed complex SQL queries to check source‑to‑target mappings, confirming data consistency and accuracy across systems. Conducted duplicate record checks, null value analysis, and data profiling to keep data quality high and reliable. Executed ETL jobs, monitored workflow runs, and investigated failures or mismatches to identify root causes and resolve issues. Verified transformation logic thoroughly to ensure business rules and calculations were applied correctly to the data. Tested incremental loads, batch processing jobs, and full data refreshes to confirm proper handling of different load types. Compared record counts between source and target tables to confirm that all expected data was transferred successfully. Validated totals, aggregates, and summary reports to ensure calculated values matched business expectations and rules. Performed regression testing after fixes or enhancements to confirm that existing functionality continued to work correctly. Reviewed log files and error reports to identify job failures, bottlenecks, or unexpected issues in ETL workflows. Documented defects with clear evidence and communicated them to the development team for timely resolution. Developed Python scripts for schema validation and data quality checks across ETL pipelines. Automated duplicate detection and record‑level validations using Python utilities. Created Python modules for test data generation and transformation logic verification. Integrated Python with SQL queries to enhance ETL test coverage and defect detection. Retested resolved defects to confirm fixes were successful and that no new issues had been introduced. Used to Prepare requirement traceability matrices to ensure all business requirements were linked to appropriate test cases. Conducted reconciliation testing between systems to verify that totals and balances matched across environments. Experience in Functional Testing, Regression Testing. Involved in preparation of Weekly and Status reports. Familiar with data analysis, testing methodologies, testing documentation, Jira, Python scripts. Wrote ad‑hoc queries and performed exploratory testing to catch hidden issues not covered by formal test cases. Validated data consistency across staging, warehouse, and reporting layers to ensure smooth flow of information end‑to‑end. Collaborated with developers, analysts, and business users to resolve mismatches and clarify transformation requirements. Delivered comprehensive test summary reports and defect metrics to stakeholders, highlighting coverage and overall results.
Education
B.Tech - Jain University
2017 - 2021 · Afghanistan
Intermediate - Narayana Junior College
2015 - 2017 · Afghanistan
SSC - Nehru High School
2014 - 2015 · Afghanistan
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Skills (18)
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